Smoker group differences in smoking and nonsmoking occasions by activity.

Notes.*p**p***pNS = Not smoking, Cig = Smoking, OR = odds ratio, CI = confidence interval, ref = reference group.Percentages were derived by averaging across subjects the within-subject computed means. All analyses were weighted by race. Smoking observations were also weighted by inverse probability of assessment. ORs are calculated by GEE.aORs and descriptive statistics may not be consistent with each other, due to internal weighting inherent in GEE analysis.bAll subcategories within this situational domain were treated as a single model in GEE analysis.