05, and power of 0.80. A step-down hierarchical regression procedure was conducted to examine the predictive ability of each WSWS subscale separately. Quit-date WSWS scores were used to predict selleck chemical Cisplatin relapse at 1 week postquit. There were significant main effects for the WSWS total score and the anger, anxiety, concentration, and sadness subscales (Table 3). The craving, hunger, and sleep subscales did not significantly predict relapse. These analyses were repeated using week 2 relapse as the dependent variable, and results were virtually identical. Additionally, because removal of the two offending items affected the sadness, hunger subscales, and WSWS total score, analyses were additionally repeated for these measures using the original 28 WSWS items, and results were virtually identical. Table 3.

Wisconsin Smoking Withdrawal Scale Quit-Day Scores Predicting Week 1 Continuous carbon monoxide Confirmed Abstinence Examination of potential interaction effects between racial/ethnic group and WSWS subscales indicated that there was a significant interaction of race with the sleep subscale (Table 3) in predicting week 1 relapse. This interaction was further investigated by examining the main effect of the sleep subscale in each racial/ethnic group. Results indicated that the sleep subscale significantly predicted relapse for Whites (adjusted odds ratio [AOR] = 1.62, 95% CI = 1.07�C2.45), but not for African Americans (AOR = 1.40, 95% CI = 0.88�C2.22) or Latinos (AOR = 0.72, 95% CI = 0.43�C1.19). However, the sleep by race/ethnicity interaction term was not a significant predictor of week 2 relapse (p = .

09). Race/ethnicity did not significantly interact with any other WSWS scales in predicting relapse by the week 1 or week 2 time points. Discussion The current study found that the 7-factor structure of the WSWS is applicable across the three racial/ethnic groups, and a highly conservative test of measurement invariance indicated that the scale measures withdrawal constructs equivalently across groups. The current study also demonstrated the predictive equivalence of the WSWS with respect to short-term relapse. With the exception of the WSWS sleep subscale, the interaction of race with WSWS subscales did not provide incremental utility in the prediction of relapse above and beyond the WSWS subscale alone.

Entinostat Overall, the findings indicate that the predictive validity of the WSWS with respect to relapse risk is equivalent across White, African American, and Latino smokers who are attempting to quit. A confirmatory factor analysis of the 28-item WSWS indicated that the 7-factor structure as found in Welsch et al. (1999) was an adequate fit for the data in the current study. Thus, the original structure of the WSWS was replicated in a large racially/ethnically diverse sample of smokers in treatment, although slight modifications were made based on modification indices.