Table. Demographic and Smoking Characteristics Across Populations.
| Characteristic | Participants, No. (%) | |||
|---|---|---|---|---|
| Overall (N = 775) | Dose, mg nicotine/g tobacco | |||
| 0.4 (n = 286) | 2.4 (n = 235) | 15.8 (n = 254) | ||
| Population | ||||
| Women with disadvantagea | 257 (33.16) | 93 (32.52) | 81 (34.47) | 83 (32.68) |
| Opioid use disorder | 260 (33.55) | 92 (32.17) | 81 (34.47) | 87 (34.25) |
| Affective disorders | 258 (33.29) | 101 (35.31) | 73 (31.06) | 84 (33.07) |
| Age, mean (SD), y | 35.59 (11.05) | 35.65 (11.21) | 35.18 (11.13) | 35.90 (10.82) |
| Women | 551 (71.10) | 200 (69.93) | 167 (71.06) | 184 (72.44) |
| Race/ethnicity | ||||
| Non-Latino | ||||
| White | 630 (82.14) | 240 (84.81) | 183 (78.21) | 207 (82.80) |
| Black | 68 (8.87) | 19 (6.71) | 25 (10.68) | 24 (9.60) |
| Latino | 23 (3.00) | 8 (2.83) | 8 (3.42) | 7 (2.80) |
| Non-Latino other or >1 race | 46 (6.00) | 16 (5.65) | 18 (7.69) | 12 (4.80) |
| Education | ||||
| <High school | 102 (13.16) | 35 (12.24) | 32 (13.62) | 35 (13.78) |
| High school graduate or equivalent or some college | 570 (73.55) | 221 (77.27) | 167 (71.06) | 182 (71.65) |
| Associate’s degree | 38 (4.90) | 12 (4.20) | 14 (5.96) | 12 (4.72) |
| ≥College graduate | 65 (8.39) | 18 (6.29) | 22 (9.36) | 25 (9.84) |
| Marital status | ||||
| Married | 112 (14.45) | 34 (11.89) | 33 (14.04) | 45 (17.72) |
| Never married | 461 (59.48) | 172 (60.14) | 145 (61.70) | 144 (56.69) |
| Divorced, separated, or widowed | 202 (26.06) | 80 (27.97) | 57 (24.26) | 65 (25.59) |
| Primary smoker of mentholated cigarettes | 351 (45.29) | 114 (39.86)b | 120 (51.06)b | 117 (46.06)b |
| Cigarettes smoked/d, mean (SD), No. | 17.79 (9.18) | 18.16 (9.59) | 17.23 (8.66) | 17.90 (9.18) |
| Urine cotinine level, mean (SD), ng/mL | 4929.35 (3771.79) | 4858.18 (3725.39) | 4898.10 (3895.50) | 5037.62 (3719.37) |
| NMR ≥0.31 | 526 (73.06) | 193 (71.75) | 152 (71.70) | 181 (75.73) |
| Breath carbon monoxide level, mean (SD), ppm | 18.02 (9.85) | 17.99 (10.32) | 17.65 (9.30) | 18.38 (9.83) |
| Age started smoking regularly, mean (SD), y | 16.14 (3.97) | 16.13 (4.15) | 16.23 (3.63) | 16.07 (4.07) |
| Fagerström Test for Cigarette Dependence score, mean (SD) | 5.56 (2.35) | 5.54 (2.33) | 5.55 (2.32) | 5.59 (2.42) |
| Heaviness of Smoking Index score, mean (SD) | 3.49 (1.54) | 3.48 (1.59) | 3.48 (1.51) | 3.50 (1.53) |
| Used other tobacco products, last 30 d | 117 (17.67) | 42 (17.21) | 37 (18.05) | 38 (17.84) |
Abbreviation: NMR, nicotine metabolite ratio.
a
In this study, having a high school education or less was considered the proxy for socioeconomic disadvantage.
b
Significant difference between dose conditions in preference for mentholated cigarettes (χ2 = 6.63; P = .04).