Smoker group differences in smoking and nonsmoking occasions by location.

Notes.
*p<.05.
**p<.005.
***p<.0005.
NS = Not smoking, Cig = Smoking, OR = odds ratio, CI = confidence interval.
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.