Histogram

Cigarette smoking, current smoker vs STAGES Visit
Alliance Sleep Questionnaire
Total 1,881
No 1,562
Yes 114
Unknown 205
Cigarette smoking, current smoker vs Participant's sex
Alliance Sleep Questionnaire
Male Female Total
Total 868 991 1,859
No 721 841 1,562
Yes 57 57 114
Unknown 90 93 183