Adjusted smoking-cessation rates* by cumulated number of high-depth intervention components received. Per-protocol analysis (n=943; OR=1.91 over the entire range of the regressor [CI=1.18–3.11]; OR=1.24 per unit change in the regressor [CI=1.06–1.45])
*Seven-day point-prevalence abstinence. Cessation rates adjusted for baseline characteristics of and nondepth experimental design factors (source and exposure). Missing data in these characteristics reduced the sample size from 954 to 944 for these analyses.