| | | Self-referred
n = 176 | Healthcare worker referred
n = 165 | Lung cancer screening referred
n = 76 | Total
n = 417 | value |
| | Age, mean (SD) | 53 (15) | 49 (13) | 63 (6) | 53 (14) | <0.001 | | Age, median (Q1, Q3) | 57 (39, 65) | 48 (39, 59) | 63 (59, 67) | 57 (40, 64) | | | Sex, n (%) | | | | | | | F | 90 (51) | 108 (65.5) | 33 (43.4) | 231 (55.4) | 0.002 | | M | 86 (48.9) | 57 (34.5) | 43 (56.6) | 186 (44.6) | | | Education, n (%) | | | | | | | Less than high school | 55 (31.2) | 15 (9.1) | 20 (26.3) | 90 (21.6) | <0.001 | | Some training after high school | 17 (9.7) | 24 (14.5) | 17 (22.4) | 58 (13.9) | | | High school graduate | 44 (25.0) | 39 (23.6) | 12 (15.8) | 95 (22.8) | | | College graduate | 37 (21.0) | 53 (32.1) | 9 (11.8) | 99 (23.7) | | | Postgraduate | 23 (13.1) | 34 (20.6) | 18 (23.7) | 75 (18.0) | | | Baseline cigarette use per day, mean (SD) | 18 (10) | 18 (11) | 20 (9) | 19 (11) | 0.471 | | Baseline cigarette use per day, median (Q1, Q3) | 18 (10, 25) | 16 (10, 25) | 20 (13, 25) | 18 (10, 25) | 0.283 | | Time to first cigarette, n (%) | | | | | | | Within the first 5 minutes after waking up | 97 (55.1) | 77 (46.7) | 29 (38.2) | 203 (48.7) | <0.001 | | Between 6 and 30 minutes after waking up | 34 (19.3) | 39 (23.6) | 28 (36.8) | 101 (24.2) | | | Between 31 and 60 minutes after waking up | 14 (8.0) | 14 (8.5) | 15 (19.7) | 43 (10.3) | | | More than 60 minutes after waking up | 31 (17.6) | 35 (21.2) | 4 (5.3) | 70 (16.8) | | | Heaviness of smoking index, mean (SD) | 3 (2) | 3 (2) | 3 (1) | 3 (2) | 0.415 | | Heaviness of smoking index, median (Q1, Q3) | 4 (2, 5) | 3 (2, 5) | 3 (3, 4) | 3 (2, 5) | 0.652 |
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