In their article in the March issue of the Journal, El-Bassel et al.
state that “… this is the first longitudinal investigation of the causal
relationship between frequent drug use and IPV [intimate partner violence]
among a random sample of women attending MMTPs [methadone maintenance
treatment programs]” (p. 468).1 This report is an important contribution
to the literature. However, it gives the incorrect impression that the
relationship between drug use and IPV had not previously been studied
longitudinally.
In a sample of opiate-dependent women in Seattle methadone treatment
programs, crack use and use of other types of cocaine were the only
meaningful longitudinal drug use predictors of IPV victimization.2
Alcohol, heroin, and marijuana use were each unrelated to IPV
victimization. In contrast to the El-Bassel et al. study, the Seattle
study used continuous measures of drug use, and IPV victimization at time
1 was controlled in analyses of IPV victimization at time 2.
Given El-Bassel et al.’s replication of this longitudinal
association, useful next steps include examining the temporal relationship
between specific events of crack use and IPV and gathering perpetrators’
perceptions of the factors precipitating their violence.3 Such research
would permit a more direct evaluation of the mechanisms underlying this
relationship.
1. El-Bassel N, Gilbert L, Wu E, Go H, Hill J. Relationship between
drug abuse and intimate partner violence: A longitudinal study among women
receiving methadone. Am J Public Health. 2005;465-470.
2. Brewer DD, Fleming CB, Haggerty KP, Catalano RF. Drug use
predictors of partner violence in opiate-dependent women. Violence Vict.
1998;107-115.
3. Daly M, Wilson M. Homicide. New York: Aldine de Gruyter.