Objectives. Recent research suggests that in utero exposure to maternal smoking is a risk factor for conduct disorder and delinquency. We review evidence of causality, a controversial but important public health question.

Methods. We analyzed studies of maternal prenatal smoking and offspring antisocial behavior within a causal framework.

Results. The association is (1) independent of confounders, (2) present across diverse contexts, and (3) consistent with basic science. Methodological limitations of existing studies preclude causal conclusions.

Conclusions. Existing evidence provides consistent support for, but not proof of, an etiologic role for prenatal smoking in the onset of antisocial behavior. The possibility of identifying a preventable prenatal risk factor for a serious mental disorder makes further research on this topic important for public health.

Smoking during pregnancy represents a major public health problem. Nearly half of all women who smoke continue to do so throughout their pregnancies.1 As a result, in the United States alone, more than half a million infants per year are prenatally exposed to maternal smoking.2 It has long been established that maternal smoking during pregnancy has adverse perinatal consequences. Newer evidence suggests that it may have consequences that extend far beyond the perinatal period.3,4

Recently, associations between maternal smoking during pregnancy and subsequent mental health problems in offspring have been reported. Specifically, youths whose mothers smoked during pregnancy are significantly more likely to develop severe antisocial behavior, including conduct disorder and delinquency.5–12 The consistency of findings in studies to date is striking, but their interpretation is less clear. Exposure during pregnancy may play a causal role in the onset of severe antisocial behavior via teratological effects on the fetus. Alternatively, these data may represent a spurious association in that women who smoke during pregnancy have other risk factors that could lead to the development of psychiatric morbidity in their children. This issue bears more careful examination, because modifying the prevalence of exposure could present a rare opportunity to prevent serious psychopathology and reduce the social burden of severe antisocial behavior.13

Antisocial behavior, defined as chronic violation of social rules and norms, can have both violent and nonviolent manifestations.14 When it occurs in a pattern that is severe, chronic, and pervasive, antisocial behavior is categorized as a mental disorder. In youths, severe antisocial behavior is diagnosed as conduct disorder; the adult diagnosis is antisocial personality disorder.15 Delinquency, in contrast, is the legal system's way of conceptualizing antisocial behavior that is subject to adjudication. Delinquency involves commission of an illegal act, at times including criminal conviction. Delinquent behavior and conduct disorder symptoms are viewed as manifestations of the same underlying difficulty in modulating behavior and conforming to social norms.14 However, as with criteria for any behaviorally defined disorder (and in contrast to disorders for which a biological marker exists), diagnostic criteria and criminal records are imperfect proxies for severe antisocial behavior.

Severe antisocial behavior is a substantial public health problem because of its prevalence, the significant associated economic and social costs, and the increased morbidity and mortality of individuals with an antisocial history.13,16,17 Conduct disorder is one of the most severe mental disorders of childhood and the most frequent reason for referral to mental health clinics for mental health assessment and treatment. Prevalence estimates from a review of international studies range from 1% to 16%, and prevalence is higher in boys.18

The idea that an individual's long-term mental health and social adjustment might be constrained by exposure to maternal smoking prenatally may seem overly deterministic. However, increasing evidence shows that early life events, such as prenatal trauma, exposures, and deprivations, have a long-lasting influence on development and health.19–24 The evidence linking maternal smoking during pregnancy with antisocial behavior in adolescent and adult offspring, which has been reported largely within the psychiatric and teratological literature, has not been critically examined from a public health perspective. Our objective in this article is to analyze existing studies within an epidemiological framework.

MEDLINE and PsychINFO were searched to identify all studies published before June 2001 that examined the association between maternal smoking during pregnancy and severe antisocial behavior in offspring. Search terms were maternal smoking, pregnancy, and prenatal exposure and either child behavior disorders, behavior problems, conduct disorder, delinquency, or antisocial personality disorder or behavior. Relevant articles also were identified via consultation with experts in the field and review of references cited in all published studies. For the causal analysis, severe antisocial behavior was defined as either (1) presence of conduct disorder symptoms or receipt of a conduct disorder diagnosis, reflecting a clinically significant pattern of antisocial behavior based on diagnostic measures, or (2) a history of delinquency or antisocial behavior as measured via records of criminal offending. Table 1 summarizes studies that met inclusion criteria. The findings of studies that used nonspecific checklist ratings of child behavior problems rather than measures of more severe antisocial behavior are generally consistent with those presented here and are reviewed elsewhere.3,25

Temporality

Because fetuses do not develop conduct disorder in utero, intrauterine cigarette smoke exposure clearly precedes the disorder. Although this sequence is a necessary condition for causality, recognizing it adds little to our understanding of possible causal pathways, because the exposure precedes the outcome by a period of many years and may involve the interaction of exposure-related vulnerabilities with multiple other perinatal and postnatal risk factors.

Strength of Association

The association between maternal smoking during pregnancy and severe antisocial behavior is moderate. The odds of developing severe antisocial behavior are approximately 1.5 to 4 times greater for exposed than for nonexposed youths (Table 1).

Accurate estimation of the strength of this association is significantly constrained, however, by limitations of exposure measurement in research to date. Virtually no studies have used repeated, prospective measures of exposure. Many women stop smoking spontaneously when they learn that they are pregnant, but others quit, reduce, and relapse multiple times during pregnancy.26 Thus, relying on measurement of exposure at a single time point often will not accurately characterize history of exposure. Furthermore, as can be seen in Table 1, characterization of exposure has varied widely in existing studies (e.g., “ever smoked” vs “smoked 1/2 pack/day or more”). Existing studies also have relied exclusively on self-reported smoking. In the absence of biological measurement of exposure, error is likely because of nondisclosure and underreporting. Self-reported cigarettes per day is also a relatively crude measure of exposure, because variations in smoking topography and metabolism result in differential exposure for the same “amount smoked.”27–29 Cotinine (a biomarker of tobacco exposure detectable in plasma, urine, and saliva) is a more precise measure of fetal exposure than maternal report.30–32

For these reasons, substantial misclassification of exposure in existing studies is likely, although the effects of such misclassification are unclear. The reported association may be underestimated because social sanctions against smoking during pregnancy increase the likelihood that smokers will not report truthfully. Such nondisclosure would tend to attenuate the effect, because it would lead to misclassification of exposed youth as nonexposed. Conversely, pregnant smokers with an antisocial history may be more likely to report smoking, because they presumably are less concerned about social norms than are pregnant smokers without an antisocial history. In this case, lack of inhibition might lead to artificial inflation of the association, because youths classified as exposed would be more likely to have other risk factors (e.g., hereditary factors) for conduct disorder.

Consistency

Studies of male offspring of mothers who smoked during pregnancy are notable for the consistency of their findings despite differing designs and populations. These studies have included clinic and community populations as well as populations at high risk for psychiatric disorders.6,9,12,33 Because conduct disorder and criminal offending are overlapping constructs, we would expect—and, indeed, we observe—a similar pattern of effects for both types of outcomes. This consistency is in contrast to the absence of a systematic pattern of behavioral effects of exposure to illicit drugs, particularly cocaine.34,35

The apparent consistency may be due to the presence of similar methodological flaws in all of the existing studies. For example, although some of the studies controlled for maternal antisocial behavior, the extent to which maternal antisocial behavior overlaps with smoking status was not reported. If all of the mothers with an antisocial history were smokers, statistical control alone would be inadequate to separate these effects.

Studies are inconsistent in regard to possible behavioral effects in female offspring. Prenatal exposure to maternal smoking is not associated with increased relative risk (RR) of conduct disorder in girls.6,11,12 However, several limitations of outcome measurement in studies to date make these negative findings difficult to interpret. First, conduct disorder is less prevalent in girls, and as a result, existing studies may have inadequate power to detect effects. In addition, the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV), diagnoses of conduct disorder and antisocial personality disorder capture only the extreme end of the spectrum of antisocial behavior, especially in girls.36 Because rates of offending are much lower in females than in males, sample size issues also have led to the exclusion of females in all but 1 existing study of offending.33 In this study, the odds of early-onset offending were actually comparable in boys and girls.33 A second limitation of outcome measurement in existing studies is that whereas behavioral effects may manifest differently in boys and girls, sex differences in the pattern of effects have not been systematically examined. For example, conduct problems may take different forms for males and females (e.g., rape vs early unprotected sex), but DSM-IV criteria for conduct disorder are based primarily on male manifestations.37,38

Possible support for differential manifestations by sex may be found in the inconsistent findings to date on the relation of prenatal nicotine exposure to subsequent development of attention deficit–hyperactivity disorder.9,39,40 Some of the studies in which exposure was found to be associated with attention deficit–hyperactivity disorder included girls12,40 (e.g., RR of attention deficit–hyperactivity disorder in girls = 2.16 vs RR = 0.44 in boys),12 whereas several of the studies in which attention deficit–hyperactivity disorder was not found to be associated with exposure consisted of boys only.9,41

Exposure may have a lesser or minimal effect on girls. Some evidence from animal studies indicates that males are more vulnerable to negative effects of prenatal exposure to nicotine.42 Also, there may be no sex differences in the original behavioral vulnerabilities associated with exposure, but the long-term effect of these vulnerabilities may differ for girls and boys.11 Clearly, more systematic examination of sex differences is needed, including use of large, population-based samples and measurement of a wide range of outcomes.

Specificity

In boys, the association of prenatal exposure to maternal smoking with psychiatric morbidity appears to be specific to antisocial behavior. Such exposure is unrelated to other disturbances of mental health and adjustment, such as mood or anxiety disorders.6,9,12 In both clinic and community samples, studies that have examined the association between maternal smoking during pregnancy and conduct disorder relative to other psychiatric disorders in offspring found that exposure was specifically associated with conduct disorder.6,9,12

A major shortcoming of existing studies is that measurement of outcomes has been cross-sectional. As a result, we do not know anything about the developmental progression of conduct symptoms in youths with prenatal exposure. Existing diagnostic studies of exposed youths either have been clinic-based or have used samples of older children, who are already in the risk period for the development of conduct disorder. Most children who develop early-onset conduct disorder have a long history of behavior problems (e.g., temperamental difficulties as infants, oppositional defiant disorder as younger children) before manifesting a full-blown disorder or committing a delinquent act.43,44 Thus, a specific causal pathway might include early symptoms of oppositional defiant disorder followed by the development of conduct disorder in adolescence. Recently, maternal smoking during pregnancy has been linked with oppositional defiant disorder symptoms in young children.10,41,45 Also, preliminary evidence from studies of older youths shows that exposure is associated with early-rather than adolescent-onset conduct problems.12,33 However, longitudinal research is needed to establish whether there is a specific and coherent pathway of exposure-related behavioral effects over time. Longitudinal data are also critical for testing whether there are specific behavioral effects of exposure or whether these are secondary to other perinatal and neurodevelopmental effects of maternal smoking.46,47

Dose–Response Relationship

There is preliminary evidence of a dose–response relationship from studies that have shown a linear relationship between number of cigarettes smoked and percentage of offspring with severe antisocial behavior.5 There is also evidence of dose–response effects from animal studies.48 To adequately confirm evidence of a dose–response relationship, precision in measurement of exposure is critical. The possibility that the shape of the dose–response curve is nonlinear has not been examined. No existing studies of the association between smoking during pregnancy and severe antisocial behavior in offspring have used measures of exposure sufficient to establish the existence—much less the shape—of a dose–response curve. Current evidence is insufficient to allow us to establish a threshold above which adverse behavioral effects might become clinically relevant.

Cessation of Exposure (Experimental Evidence)

Although exposure cannot be experimentally manipulated in humans, proving that cessation or reduction of exposure decreases risk to offspring would add substantial weight to a causal argument. One approach would be to compare outcomes of children whose mothers have a smoking history but did not smoke during pregnancy (“spontaneous quitters”) with those of children whose mothers are persistent smokers.49 One limitation of this approach is that women who are able to quit are likely to differ from women who are not, along precisely those psychological and psychiatric dimensions that may underlie the apparent exposure effect. For example, persistent smokers are more likely to have a history of conduct symptoms, less likely to have stable home environments, and more likely to have problematic relationships.50

Although women cannot be randomized to smoking and nonsmoking conditions, another strategy would be to follow the offspring of participants randomized to receive prenatal smoking cessation interventions.51 However, current smoking cessation interventions are successful in only a minority of women.52 The types of factors that reduce the likelihood that a woman will benefit from the intervention are the same factors that increase the risk of offspring conduct problems.53 As a result, such studies cannot fully separate cessation effects from maternal characteristics that influence smoking behavior and, therefore, may provide biased estimates.

Biological Plausibility

Because true experimental evidence in humans cannot be obtained, findings from basic science are critically important for establishing causality.25,54 Substantial evidence indicates that nicotine crosses the placental barrier and that smoking during pregnancy is associated with fetal neurotoxicity.55 Neurotoxic effects are hypothesized to occur via (1) hypoxic effects on the fetal–placental unit (e.g., reduction of fetal blood flow) and (2) teratological effects on the developing fetal nervous system.42 Animal research has established that in utero exposure to nicotine has enduring effects on neural function.54 Although intrauterine exposure to maternal smoking involves exposure to many toxins, most evidence points to carbon monoxide and nicotine as the key neurobehavioral teratogens.56–59

Nicotine acts primarily through its action on nicotinic acetylcholine receptors.25 Nicotinic receptors are present early in gestation, which suggests that nicotinic signaling plays a key role in neural development.25 The fetal brain is protected against many neurotoxins, but it is exquisitely vulnerable to exogenous nicotine because it contains specific nicotine-sensitive receptors.54 Continuous patterns of maternal smoking behavior (i.e., the tendency to smoke in a manner that maintains plasma nicotine levels at a steady state) also are likely to heighten the adverse effects of exogenous nicotine on the fetal brain, in contrast to the more episodic pattern of illicit drug use, which allows for central nervous system recovery.54 This exogenous stimulation of nicotinic acetylcholine receptors in the immature nervous system interacts with the genes that direct differentiation of cells, thereby causing permanent alterations in cell functioning.25,54 Exposure also has been shown to disrupt developmental actions of hormones and to interfere with processes related to sexual dimorphism of the brain, which may explain apparent sex differences in effects.12,42

In animals, demonstrated effects of prenatal exposure to nicotine and carbon monoxide include structural (e.g., abnormalities of cell differentiation), neuroregulatory (e.g., disruptions in neurotransmitter activity), and neurobehavioral (e.g., hyperactivity, deficits in arousal modulation) deficits.48,54,60–62 In human infants, prenatal exposure to cigarette smoke also has been associated with early neurotoxic effects.63

The evidence that cigarette smoke constituents are behavioral teratogens fulfills the criterion of biological plausibility but is not sufficient proof that exposure to cigarette smoke in humans causes a disorder as complex and multifaceted as conduct disorder.

Consideration of Alternative Explanations

The greatest challenge in establishing whether prenatal exposure actually has a teratological effect is ruling out the possibility that the apparent effects are caused by confounding. Many obvious potential confounders have been statistically controlled in published studies (Table 2). Statistical control for a wide range of empirically and theoretically derived confounders has not appreciably altered associations between smoking during pregnancy and offspring antisocial behavior. However, in addition to the potential for as-yet-unmeasured confounders,64–66 statistical control alone does not rule out the possibility of residual confounding.67

Three primary alternative explanations have been proposed:

1. Confounding by social class.

Women who smoke are more likely than nonsmokers to be of low socioeconomic status,68 which is associated with increased risk of antisocial behavior.69 Although virtually all existing studies have controlled for some socioeconomic factors, socioeconomic status is likely to be both a strong confounder and poorly measured. The potential for residual confounding is therefore great. The association of maternal smoking during pregnancy and offspring behavior problems has been reported in Yugoslavia, a country where smoking and social class are positively associated, the reverse of the situation in the United States.70 The association also has been replicated in samples with more uniform socioeconomic status distributions.10,11,33

2. Confounding by parental psychiatric history.

Women with mental health problems are more likely to smoke than are healthy women, and their children are at increased risk for antisocial behavior.71 This increased risk is the result of both genetic and environmental factors. In terms of possible genetic confounding, parental antisocial history has been controlled in all clinical studies but in only 1 of the existing studies of offending. Even in those studies that controlled for antisocial history, there may be substantial error in these measures because of (1) heavy reliance on maternal report of paternal antisocial behavior, (2) underestimation of parental antisocial behavior when measures of parental offending are used, and (3) limitations of diagnostic measures for capturing manifestations of conduct problems in women.37

Broadening assessment of familial risk to a wider range of traits might address some of these methodological issues.72 However, even robust and varied measures of antisocial behavior may contain substantial error, because there are still no pathognomonic markers by which conduct disorder and antisocial personality disorder can be diagnosed with certainty.73,74 For this reason, statistical control alone is insufficient to rule out the hypothesis of genetic confounding. Family studies that more directly assess contributions of heritability and environment (e.g., comparisons of siblings discordant for in utero exposure or twin-study designs in which some twin pairs have been exposed and some have not) would more clearly disaggregate contributions of exposure and of genetic factors in the development of offspring antisocial behavior.64,74,75

However, examining the question of genetic and teratological contributions to the development of antisocial behavior in offspring as an “either/or” issue is probably too simplistic. One possibility is that the “true” effect is neither wholly teratological nor solely genetic, but rather an interaction of these 2 processes. Current evidence on the genesis of psychiatric disorders supports a model in which susceptibility genes increase vulnerability but lead to disorder only in interaction with other environmental and biological factors (e.g., prenatal toxins).74,76

Parental psychiatric history also may be an environmental confounding factor because of the deleterious effects of parental psychopathology on the family environment.77,78 For example, smoking and depression are associated, and depression is a barrier to quitting, particularly for women.79,80 Women who are depressed are more likely to provide problematic parenting and to have marital discord, both of which are associated with increased risk of offspring behavior problems.78 Several studies of maternal smoking and offspring conduct problems (including 1 study in which clinically depressed women were oversampled) have controlled for maternal depression.9,12

Confounding by quality of family environment.

Women who smoke are more likely to provide inconsistent, harsh discipline and unresponsive parenting.49,81,82 These same factors have been associated with the development of antisocial behavior in youth.77,83 Virtually all of the existing studies have controlled for the quality of parenting and the home environment in some way. This control has not appreciably altered the association. However, a major limitation is that parenting generally has been measured via self-report, often concurrently with conduct problems. Proxy measures of poor-quality care, which are likely to contain substantial error, also have been used.5 Observational measures of parenting provide a more objective assessment of the caregiving environment, and we have recently shown that exposure effects are independent of the observed quality of parenting.10,11 Paternal behavior has not been directly assessed. Future studies should consider a wider range of family environmental factors (e.g., parenting stress, exposure to family violence).

One other important issue that has been examined only cursorily in these studies is that of separating the effects of prenatal smoking from the effects of postnatal exposure to environmental tobacco smoke. This is difficult to do, because prenatal smoking and environmental tobacco smoke are highly collinear. Environmental tobacco smoke exposure has been associated with neurodevelopmental and milder behavior problems (for a review, see Eskenazi and Castorina84) but not with severe antisocial behavior.

Consistency With Other Knowledge (Coherence)

The possibility that maternal smoking may play a causal role in the development of antisocial behavior in offspring is consistent with existing knowledge that prenatal insults and exposures have long-term adverse effects on health.20,24,85 For example, exposure to wartime famine during pregnancy has been associated with increased risk of antisocial personality disorder,86 and long-term behavioral effects have been found in the case of prenatal alcohol and lead exposure.87 On the other hand, as discussed earlier, long-term behavioral effects of fetal exposure to cocaine have not been seen.

The body of existing evidence is consistently supportive, but certainly not definitive proof, of an etiologic role for prenatal exposure to nicotine in the onset of severe antisocial behavior in offspring. Published studies yield no evidence that is incompatible with a causal explanation for this association. These studies must be viewed as preliminary (because of the methodological limitations detailed above), but the cumulative evidence is provocative and sufficiently compelling to make further research in this area a matter of public health interest. Estimates of smoking-attributable risk for conduct problems suggest that if a causal relationship were established, the public health burden would be substantial.4,88 Even if a modest effect were to be established, this would be significant because of the high prevalence of conduct disorder and delinquency.

Cigarette smoke is a powerful toxin for a broad spectrum of the population. There is little doubt that it is a risk factor for cancer and cardiovascular disease.89 Similarly, it is widely accepted that intrauterine exposure to the constituents of cigarette smoke adversely affects fetal development, including birthweight and respiratory function.89 This knowledge leads to the obvious question: Why is it important to invest further effort in establishing yet another problematic outcome of maternal smoking? We would answer this question by noting that once antisocial behavior has developed, it is highly persistent and difficult to treat.90 Identified risk factors (e.g., low socioeconomic status, unstable family structure, and parental psychopathology) are often chronic and difficult to modify.

Future research must move beyond replication of these findings in different samples91 toward more explicit attempts at refutation in studies specifically designed to test causality. Most critical for answering the question posed at the outset of this article—Does maternal smoking during pregnancy cause severe antisocial behavior in offspring?—is a program of research that (1) measures exposure with precision; (2) uses study designs that can separate risk factors associated with being a maternal smoker from exposure per se; (3) follows up exposed youths from infancy through adolescence to identify early exposure-related behavioral vulnerabilities and factors that determine whether these result in adverse behavioral outcomes over time; and (4) combines both observational and basic science approaches. Fundamental to this endeavor is the modeling and testing of specific causal pathways. A teratological effect may be direct or indirect. For example, a direct effect might occur via alterations in neurotransmitter systems that interfere with modulation of arousal (e.g., dopaminergic systems).25 In contrast, the increased risk of antisocial behavior in exposed youths may be secondary to other exposure-related problems. For example, the increased risk of conduct problems in exposed youths might occur indirectly via effects of maternal smoking on birthweight and perinatal problems46 and neuropsychological difficulties,47 all of which increase the risk for later antisocial behavior.92,93

This article highlights the challenges and complexities of establishing a causal path from a perinatal event to a disorder that emerges sometimes decades later.20 These challenges are not specific to prenatal exposure to maternal smoking and offspring antisocial behavior. Rather, they reflect the more general challenges of establishing causal pathways from risk factors operative during the first few years of life to pathological processes manifesting decades later.94

Most psychiatric syndromes are the result of complex causal chains involving genetic and other biological factors, proximal environmental factors, and distal social risk factors.95 The lengthy time from perinatal exposure to the development of disorder makes it particularly difficult to establish causal pathways, especially because the ways in which risk factors work together are very complex, and the many intervening factors make it difficult to isolate effects of a single, specific factor. In addition, children are born with behavioral susceptibilities to a psychiatric disorder rather than the disorder itself.74,96 Thus, establishing coherent temporal pathways is fundamental to establishing for whom and how these susceptibilities actually lead to disorder. This objective requires articulating developmental models that identify age-specific manifestations of vulnerabilities and dysfunction,97 an area of science that is just emerging.98,99

Accurate identification of “caseness” is fundamental to establishing etiologic pathways, yet existing methods of classification do not fully capture the wide variation in phenotypic expression of psychiatric disorder.74 In addition, potential effect modifiers must be identified and tested,5,11,100 a daunting task because of the vast array of relevant risk factors and the fact that salient risks may be different in different developmental periods.101

The importance of this area of research extends far beyond the specific question at hand, which in turn provides a unique opportunity to develop and test etiologic pathways that can serve as a paradigm for broader research, because (1) there are well-quantified methods for measuring prenatal exposure to maternal smoking,102 (2) a consistent association to a specific psychiatric disorder has been established, and (3) early manifestations of conduct problems emerge in the first few years of life.103 For these reasons, the study of the long-term effects of maternal smoking holds much promise for informing our understanding of how insults to the developing brain affect early behavior and how the effects of such insults interact with contextual factors over time in the etiology of psychiatric disorders.

Table
TABLE 1 —Review of Studies of Maternal Smoking During Pregnancy and Severe Antisocial Behavior in Offspring
TABLE 1 —Review of Studies of Maternal Smoking During Pregnancy and Severe Antisocial Behavior in Offspring
StudyaDesignSampleMeasurement of ExposureExposed, %Measurement of OutcomeMain Outcomes (Adjusted)
Studies of conduct disorder (CD)
Wakschlag et al.9Clinic-based case–control177 males (7–17 y), Georgia and PennsylvaniaRetrospective, self-report: "How much did you smoke during pregnancy?"37CD by diagnostic interview, multiple time pointsOR for CD in boys = 3.3 (>½pack/day)
Fergusson et al.6Population-based prospective cohort1265 males and females (18 y), New ZealandSelf-report at birth: “How much did you smoke during pregnancy3232CD symptoms by diagnostic interviewLinear increase in boys' mean CD score as exposure increased: 0.48 for nonexposed, 0.76 for < ½pack/day, 1.04 for ≥½pack/day, 1.32 for ≥pack/day
Weissman et al.12Offspring of case-control study of maternal depression147 males and females (17-36 y), New YorkRetrospective, self-report: "Did you ever smoke more than 1 /2 pack/day during pregnancy?"34CD by diagnostic interviewRR for male early-onset CD = 4.1 (≥ ½pack/day)
Wakschlag and Keenan10Clinic-based case-control129 males and females (2-5 y), Chicago, IllRetrospective, self-report: "How much did you smoke during pregnancy?"23ODD and CD symptoms by diagnostic interviewMean ODD and CD score was 1.54 higher for exposed vs nonexposed
Studies of criminal offending
Brennan et al.5Population-based prospective cohort4169 males (34 y), DenmarkProspective, self-report, while pregnant: "How much have you been smoking daily during the third trimester?"51Arrest history from national criminal registerOR for male persistent offending = 1.5, OR for male violent offending = 1.7 (> ½ pack/day)b
Rasanen et al.8 (see also Rantakallio et al.104)Population-based prospective cohort3883 males (16 y), FinlandProspective, self-report, while pregnant: "Have you been smoking daily during pregnancy?"16Criminal offense from national criminal registerOR for male recidivism = 2.4, OR for male violent offending = 2.1 (any exposure)
Gibson et al.33 (see also Gibson and Tibbetts7,100)Population-based prospective cohort200 males and females (17 y), Philadelphia, PaProspective, self-report: "How much have you been smoking daily during pregnancy?"50Age at first police contact from city police recordsOR for early-onset offending = 2.6 for boys and 3.5 for girls (> ½ pack/day)b

Note. OR = odds ratio; RR = relative risk; ODD = oppositional defiant disorder.

aRelated findings from the same cohort that have been reported in multiple articles are represented only once in this review.

bCalculated from data presented by the authors.

Table
TABLE 2 —Testing of Primary Alternative Explanations in Existing Studies
TABLE 2 —Testing of Primary Alternative Explanations in Existing Studies
StudySociodemographic FactorsParental Psychiatric FactorsaParenting and Quality of Home Environment FactorsbPerinatal and Child Factors
Wakschlag et al.9Maternal ageAntisocial personalityDiscipline, communication, supervisionExposure to illicit drugs or alcohol
 SESSubstance abuse Pregnancy or birth complications
 Marital status  Low birthweight
 Ethnicity   
Fergusson et al.6Maternal ageOffendingResponsiveness (age 3)Exposure to illicit drugs or alcohol
 SESSubstance abuseParental conflictUnplanned pregnancy
 Maternal education Youth report of: 
   Parental physical discipline 
   History of child abuse 
Weissman et al.12Maternal ageAntisocial personalityParental conflictExposure to alcohol or caffeine
 SESSubstance abuseMarital adjustmentPregnancy or birth complications
 Marital statusDepressionYouth report of:Low birthweight
 EthnicityAnxietyFamily cohesionEnvironmental tobacco smoke
 No. of children   
Wakschlag and Keenan10Maternal ageMaternal antisocial personalityObserved responsivenessLow birthweight
 Public aid recipientOffendingHarsh disciplineIQ
 Marital statusMaternal depressionParenting stress and support 
 Ethnicity   
Brennan et al.5Maternal agePaternal offendingRejection (age 1)Exposure to prescription drugs
 SESPsychiatric hospitalization Pregnancy or birth complications
Rasanen et al.8Maternal ageMaternal depression. . .Exposure to illicit drugs or alcohol
 SES  Pregnancy or birth complications
 Marital status  Unplanned pregnancy
    Infant developmental status
Gibson et al.33Maternal age. . .Unstable home environmentPregnancy or birth complications
 SES  Low birthweight
    IQ

Note. SES = socioeconomic status.

aMeasured for both parents, unless noted.

bMeasured concurrently with outcome and by maternal report, unless noted.

The writing of this article was supported in part by grants from the National Institute on Drug Abuse (K08 DA00330 to L. S. Wakschlag; DA02277 and DA01696 to N. L. Benowitz), the National Institute of Mental Health (K02 MH01389 to E. Cook), and the Walden and Jean Young Shaw Foundation and the Irving B. Harris Center for Developmental Studies to the Department of Psychiatry, University of Chicago.

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Lauren S. Wakschlag, PhD, Kate E. Pickett, PhD, Edwin Cook, Jr, MD, Neal L. Benowitz, MD, and Bennett L. Leventhal, MD Lauren S. Wakschlag, Edwin Cook, and Bennett L. Leventhal are with the Department of Psychiatry, University of Chicago, Chicago, Ill. Kate E. Pickett is with the Departments of Health Studies and Obstetrics and Gynecology, University of Chicago, Chicago, Ill. Neal L. Benowitz is with the Division of Clinical Pharmacology and Experimental Therapeutics, Department of Medicine and Biopharmaceutical Sciences, University of California, San Francisco. “Maternal Smoking During Pregnancy and Severe Antisocial Behavior in Offspring: A Review”, American Journal of Public Health 92, no. 6 (June 1, 2002): pp. 966-974.

https://doi.org/10.2105/AJPH.92.6.966

PMID: 12036791