The aim of this study was to determine treatment adherence relative to freq
uency of violence and posttraumatic stress disorders (PTSD) among new metha
done patients. Ninety-sis opiate-abusing patients were evaluated for childh
ood physical and sexual abuse (CPSA), adulthood exposures to violence (ADVI
OL), PTSD, and treatment adherence. Overall, 43% of the subjects dropped ou
t of treatment within 3 months of intake. Occurrence of trauma or PTSD did
not predict drop-out rates. A 2 (Gender) x 2 (PTSD) analysis of covariance
(ANCOVA) with severity of other drug use on admission as a covariate, howev
er, revealed a main effect for PTSD, F(4, 71) = 7.69, p less than or equal
to .01, such that those patients with current PTSD revealed significantly m
ore ongoing drug use at 3 months (M = 24.3, SD = 20.9) than those without (
M = 8.9, SD = 11.8). Examination of ongoing cocaine use using a 2 (Gender)
x 2 (PTSD) ANCOVA also revealed a main effect for PTSD, F(4, 17) = 8.24, p
less than or equal to .005, such that those patients with current PTSD reve
aled significantly more ongoing cocaine use at 3 months postadmission (M =
51.6, SD = 37.6) than those without (M = 24.3, SD = 20.9). For both genders
, CPSA and ADVIOL were associated with higher rates of PTSD, which in turn
predicted poorer treatment adherence as measured by ongoing co-occurring dr
ug abuse 3 months postadmission. Results underscore the need for routine as
sessment and targeted treatment of trauma in methadone patients. (C) 2000 E
lsevier Science Inc. All rights reserved.