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. 2019 May 17;15:100895. doi: 10.1016/j.pmedr.2019.100895

Table 2.

Smoking behavior and cotinine categories of U.S. adult population by race (National Health Interview Survey, 1999–2002, N = 5864).

Whites
(N = 3328)
Blacks
(N = 1061)
Mexican American
(N = 1474)
Smoked at least 100 cigarettes in life 52.56 (49.06–56.06) 43.62 (39.13–48.12) 42.52 (38.43–46.60)
Smoking status
 Never 47.43 (43.93–50.93) 56.37 (51.87–60.86) 57.47 (53.39–61.56)
 Past 27.69 (24.94–30.45) 14.92 (12.11–17.73) 21.23 (19.34–23.12)
 Current 24.86 (22.04–27.68) 28.70 (24.64–32.75) 21.28 (17.34–25.22)
Cigarettes per daya 19.45 (18.4–20.49) 12.68 (11.11–14.24) 9.42 (8.04–10.80)
Filter type
 Mentholated 14.78 (11.24–18.32) 78.78 (72.38–85.19) 10.06 (05.32–14.81)
 Nicotine contenta 0.84 (0.81–0.87) 1.08 (1.05–1.11) 0.94 (0.91–0.97)
 Tar contenta 11.36 (10.90–11.82) 14.81(14.29–15.32) 12.71(12.19–13.23)
Someone smokes at home (never smokers) 24.89 (20.43–29.36) 27.65 (18.64–36.65) 15.44 (07.69–23.19)
Cotinine category 1
 0–0.049 ng/ml 42.78 (38.17–47.39) 21.30 (17.28–25.32) 46.54 (39.48–53.59)
 0.05–2.99 ng/ml 27.27 (24.01–30.53) 40.92 (37.19–44.66) 31.84 (27.27–36.41)
 ≥3 ng/ml 29.93 (26.83–33.04) 37.76 (32.69–42.84) 21.61 (17.33–25.89)
Cotinine category 2
 0–9.99 ng/ml 71.59 (68.38–74.81) 65.11 (60.53–69.69) 80.72 (76.59–84.85)
 ≥10 ng/ml 28.41(25.18–31.61) 34.89 (30.30–39.46) 19.28 (15.14–23.40)

Analyses were performed with adjustment for sample weights and design effects.

Data represent percentages (95% confidence interval), except where noted.

a

Mean (95% confidence interval).