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. 2020 Dec 25;11(2):e01982. doi: 10.1002/brb3.1982

TABLE 1.

This table describes the demographic and smoking characteristics of our study sample

Total

N = 104

C allele group (CC + CT)

n = 39

No C allele group (TT)

n = 65

2‐tailed t test and chi‐square analysis (C vs. No C group)
n (%) n (%) n (%) p
Demographic characteristics
Sex
Male 57 (54.8) 21 (53.8) 36 (55.4) n.s.
Female 47 (45.2) 18 (46.2) 29 (44.6)
Race
Black 31 (29.8) 19 (48.7) 12 (18.5) .004
White/Caucasian 63 (60.6) 18 (46.2) 45 (69.2)
Other 10 (9.6) 2 (5.1) 8 (12.3)
Education
> high school 63 (60.6) 20 (51.3) 43 (66.2) n.s
M ± SD M ± SD M ± SD p
Age (years) 41.80 ± 11.07 41.74 ± 11.37 41.83 ± 10.98 n.s.
Smoking characteristics
Cigarettes per day (CPD) 17.48 ± 5.85 17.74 ± 6.69 17.32 ± 5.34 n.s.
No. of smoking years 22.27 ± 11.42 21.26 ± 10.5 22.88 ± 11.99 n.s.
Pack‐years 19.90 ± 12.81 18.29 ± 10.27 20.87 ± 14.11 n.s.
Fagerstrom Test for Nicotine Dependence (FTND) 5.35 ± 1.89 5.44 ± 1.89 5.30 ± 1.91 n.s.

The sample was compared across genotype groups using chi‐square analysis for categorical variables and 2‐tailed t tests for continuous variables. Note, the “other” race category includes Asian, Latin, American Native, and mixed ethnicities.

Abbreviation: n.s., not significant.