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. Author manuscript; available in PMC: 2013 Jul 16.
Published in final edited form as: Drug Alcohol Depend. 2006 Sep 27;87(0):241–248. doi: 10.1016/j.drugalcdep.2006.08.025

Table 4.

Posttraumatic Stress Disorder (PTSD) Diagnosis and Substance of Withdrawal as Predictors of Initial Status and Changes in PTSD Symptoms (as measured by the Modified PTSD Symptom Scale – Self Report; MPSS) over 28 days of Cocaine and Alcohol Abstinence in a Latent Growth Model: Unstandardized Regression Weights

Full Latent Growth Model Path Unstandardized Estimate SE z score p
PTSD Diagnosis → Intercept 16.039 2.178 2.296 .022
PTSD Diagnosis → Growth 2.779 7.794 .357 .721
Alcohol → Intercept 2.826 4.779 .591 .554
Alcohol → Growth 5.865 5.352 1.096 .273
Cocaine → Intercept .902 5.235 .172 .863
Cocaine → Growth 2.059 5.862 .351 .725

Note: PTSD Diagnosis = dichotomously coded variable (1 = met diagnostic criteria for PTSD at first assessment, 0 = did not meet criteria for PTSD at first assessment). Alcohol = dichotomously coded dummy variable representing substance of withdrawal (alcohol = 1, cocaine or cocaine/alcohol = 0). Cocaine = dichotomously coded dummy variable representing substance of withdrawal (cocaine = 1, alcohol or cocaine/alcohol = 0). Together the Alcohol and Cocaine variables represent the 3 drug withdrawal categories (cocaine only, alcohol only, and alcohol and cocaine). Intercept = latent variable representing baseline MPSS score. Growth = latent variable representing change in MPSS scores over time. SE = Standard Error.