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Table 2 Demographic characteristics of study participants (N = 38)

From: Initial puffing behaviors and subjective responses differ between an electronic nicotine delivery system and traditional cigarettes

Variable   Lost to follow-up after visit 1 or 2 (n = 8) Completed study (n = 30) p*
Non-compliant (n = 14) Compliant (n = 16)
Total percentages   21.1% 36.8% 42.1% ---
Gender Female 75.0 50.0 62.5 0.53
Male 25.0 50.0 37.5
Race White 50.0 57.1 81.2 0.27
Black 50.0 42.9 18.8
% Menthol Yes 100.0 64.3 75.0 0.21
No 0.0 35.7 25.0
Age Mean 37.9 44.9 45.5 0.36
(SE) (5.2) (2.7) (3.5)
Cigarettes per day Mean 15.4 20.3 16.1 0.25
(SE) (2.6) (2.6) (1.4)
Minutes to first cigarette after waking Geo. Mean 15.9 13.7 13.1 0.94
Baseline cotinine Geo. Mean 252.6 427.6 338.0 0.15
  1. *Chi-square test for categorical variables; one-way ANOVA for continuous variables.