Table 3.

Mean urinary cotinine values by time to first cigarette after waking in a community-based study, New York

nUrinary cotinine (μg/mg creatinine)P value for pairwise comparisons of mean urinary cotinine levels
95% CL6-30 min31-60 min>60 min
Time to first cigarette (min)
    <51024,6003,900-5,2600.540.110.01
    6-30824,2703,530-5,0100.25<0.05
    31-60413,5302,450-4,6100.28
    >60272,6501,370-3,930

NOTE: Mean values are adjusted for cigarettes per day, sex, and race.