© 2003 American Public Health Association
Renee D. Goodwin and Christina W. Hoven are with the Department of Epidemiology, Columbia University Mailman School of Public Health, and the New York State Psychiatric Institute, New York, NY. Robert Murison is with the Department of Biological and Medical Psychology, Division of Physiological Psychology, University of Bergen, Norway. Mathew Hotopf is with the Department of Psychological Medicine, Guys Kings and St Thomas School of Medicine and Institute of Psychiatry, London, England. Correspondence: Requests for reprints should be sent to Renee Goodwin, PhD, Department of Epidemiology, 1051 Riverside Dr, Unit 43, New York, NY 10032 (e-mail: rdg66{at}columbia.edu).
Previous studies suggest that childhood physical abuse is a strong predictor of mental disorders during adulthood.15 An association between childhood abuse and increased use of medical services has also been documented,6 suggesting that childhood physical abuse is associated with poor health. In contrast, relatively little information is available on the link between childhood physical abuse and physical illness in adulthood. We examined the association between childhood physical abuse and the odds of gastrointestinal disorders and migraine headache among adults in the community. We hypothesized that childhood physical abuse would be associated with increased odds of gastrointestinal disorders and migraine headache during adulthood, and that this association would be independent of comorbid mental disorders.
Sample The Midlife Development in the United States Survey (MIDUS) is a nationally representative survey of 3032 persons aged 25 through 74 years in the noninstitutionalized civilian population of the 48 coterminous United States. It was carried out between January 1995 and January 1996, with an overall response rate of 60.8%. The data were weighted to adjust for differential probabilities of selection and nonresponse. Details on the design, field procedures, and sampling weights are available elsewhere.79
Diagnostic Assessment To assess physical health problems, interviewers presented each participant with a list of physical disorders and asked whether the participant had experienced, or been diagnosed by a physician with, any of the conditions listed within the past year. The list included migraine headaches, ulcer, and recurring stomach problems. Only participants for whom information was available on all variables (n = 2407) were included in the present analyses.
Self-Reported Childhood Physical Abuse
Analytic strategy
Prevalence and Sociodemographic Characteristics Childhood physical abuse was reported by 381 (15.8%) of the 3032 respondents, with 74 (3.1%) reporting frequent abuse. Individuals who reported experiencing childhood abuse were significantly younger, more likely to be of minority racial status, and more likely to have current mental disorders than those who did not report abuse (Table 1
Childhood Abuse and Physical Illness Among Adults in the Community Any childhood abuse was associated with a significantly increased odds ratio (OR) for recurring stomach problems (OR = 1.7; 95% confidence interval [CI] = 1.2, 2.4), and frequent childhood abuse was associated with a significantly increased likelihood of recurring stomach problems (OR = 3.5; 95% CI = 1.9, 6.4), migraine (OR = 2.7; 95% CI = 1.2, 5.8), and ulcer (OR = 4.2; 95% CI = 1.8, 10.0), which remained statistically significant after adjusting for sociodemographic characteristics and mental disorders (Table 2
Limitations of this study should be noted. First, since the sample was a cross-sectional population of adults, recall about events that occurred during childhood may have suffered from recall bias. Previous evidence suggests that recall of childhood abuse may have questionable reliability.1718 Second, factors not controlled for in this study, such as socioeconomic status during childhood, may independently influence both odds of exposure to childhood physical abuse and physical illness, thereby confounding these results.19 Third, data on physical illnesses were obtained only by self-report; however, previous data have shown adequate validity of self-reported information on chronic medical conditions.20 These data provide initial evidence of an association between childhood physical abuse and increased odds of gastrointestinal problems and migraine headaches among adults in the general population. The mechanism of the observed association is not known. Experiences of childhood physical abuse may lead to an increased tendency to somatize emotional distress and to report physical illnesses.21 It is also possible that the experience of childhood abuse increases recognition of underlying health problems.22 In other words, physical abuse may increase awareness or sensitize people to pains or physical discomfort that others might ignore. Alternatively, childhood abuse may lead to changes in biological functioning that influence the development of physical illness.23 One model that could be offered as evidence for this pathway is the increased gastric scarring among mice exposed to stressful situations.24 It is also possible that physical abuse is an indicator of wider psychosocial adversity in childhood, which might include poverty, parental stress, and poor parenting.25 These broad risk factors may be more important than abuse per se as determinants of later physical or mental disorders. The fact that a variable for neglect, which could be included in poor caretaking and abuse, was not included in the Conflict Tactics Scale may result in uncontrolled confounding and is another limitation of this study. Consistent with previous evidence of an association between childhood physical abuse and poorer mental health in adulthood,15 these preliminary data suggest that childhood physical abuse also increases the likelihood of physical health problems later in life. Future studies investigating these associations should use prospective, longitudinal epidemiological samples of youths and adults and should be able to adjust for a multitude of antecedent common risk factors. Such studies may help improve our understanding of these links.
Contributors R. D. Goodwin was the principal author and conceptualized the research with significant input from C. W. Hoven, R. Murison, and M. Hotopf. All authors participated in the review and revisions of the brief. This study was approved by the institutional review board of The University of Michigan. Accepted for publication September 2, 2002.
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