Table 4 Study hypotheses, measures, and analytic strategies
Purpose | Variables | Analytic strategy |
|---|---|---|
First aim: Main study outcomes | Treatment condition and: | Logistic regression |
Hypothesis 1 | · Enrollment in quitline by 6 months | |
Test the effects of warm handoff on quitline enrollment | ||
Hypothesis 2 | Treatment condition and: | Logistic regression |
Test the effects of warm handoff on post-discharge guideline-based counseling adherence | · Completing at least 3 quitline counseling sessions (binary) | |
Hypothesis 3 | Treatment condition and: | Logistic regression |
Test the effects of warm handoff on 6-month abstinence outcomes | · 30-day abstinence | |
· 7-day abstinence | ||
· Prolonged abstinence | ||
Second Aim: Mediation analyses | Treatment condition and 1-month: | Combined Poisson and logistic structural equation modeling |
Hypothesis 4 | · Satisfaction with care transition | |
Effect of warm handoff on care transitions, enrollment, adherence, and pharmacotherapy utilization | · Enrollment in quitline | |
· No. of quitline sessions completed | ||
· Pharmacotherapy use | ||
Third aim: Costs and cost-effectiveness | Treatment condition and: | -Average cost/arm |
Hypothesis 5 | · 30-day abstinence | -Incremental cost/quit |
Warm handoff will be more costly, but also more cost-effective, than fax referrals | · Fixed/Variable costs | |
· Provider costs | -Providers | |
· Participant costs | -Participants | |
-Combined | ||
Feasibility, strengths/weaknesses of protocols | Semistructured interviews | Qualitative analysis |