RESULTS Treatment Group Comparisons for Baseline Measures Table 1 provides descriptive statistics for baseline sociodemographic Pacritinib aml and smoking history variables by treatment group. There were no group differences on any of the baseline measures. Other baseline variables were available only for the CI group participants (data collected by WTQL counselors during the first counseling call). These variables included prior use of NRT, for which 33% of young adults reported such use, and reasons for quitting, with health reasons being the most common (74%) followed by family reasons (37%) and the cost of cigarettes (33%). Table 1.

Descriptive Statistics for Baseline Sociodemographic and Smoking History Variables by Treatment Group Counseling Intervention Utilization and Follow-up Nearly 10% of the CI participants (N = 20 out of 209) failed to complete even a single counseling call; these participants enrolled in the study but lacked time during the initial call to the WTQL to be transferred to a counselor and never followed through on any subsequent calls. Twenty-six percent of CI participants completed one call, 29% completed two calls, 22% completed three calls, and only 14% completed all four calls (mean number of calls completed = 2.05, SD = 1.20). The mean total minutes of counseling was 41 (SD = 25). For a participant who did not complete a given counseling call, quitline counselors made, on average, about five calls in an effort to reach the participant. For the entire sample of 410 participants, 89 (21.7%) failed to complete any follow-up interviews, 83 (20.

2%) completed only one follow-up, 102 (24.9%) completed two follow-ups, and 136 (33.1%) completed all three follow-ups. Overall response rates at each of the follow-ups were 67.8% at 1 month; 53.4% at 3 months; and 48.3% at 6 months. There were no treatment group differences in response rates at any of the three follow-ups. For the participants in the CI group, there was a strong association between the number of counseling sessions completed and the number of follow-up calls completed, ��2(df = 12) = 44.17, p < .001. Primary Outcomes for Young Adult Participants (N = 410) As shown in Table 2, the CI group was significantly more likely to set a quit date (59.8%) than the SH group (43.3%; p < .002) at 1-month postenrollment in the ITT analysis as well as in the responder-only analysis (p < .

001). This effect was not found at the subsequent study end points except in the responder-only analysis (p = .003) at 6 Cilengitide months. The groups did not differ in the percentage of participants who actually reported making a quit attempt at any of the study end points. Similarly, the groups did not differ in percentage abstinent at any of the study end points for either the ITT or responder-only analysis. Table 2.