Baseline demographics and clinical characteristics of current smokers in the usual-care and intervention groups
| Control (n= 317) | Intervention (n= 373) | Total (n= 690) | |
|---|---|---|---|
| Male, n (%) | 175 (55.2) | 198 (53.1) | 373 (54.1) |
| Age, years (mean ± SD) | 56.0 ± 8.7 | 57.7 ± 10.1 | 56.9 ± 9.5 |
| Born in Australia,a n (%) | 224 (70.7) | 259 (69.4) | 483 (70.0) |
| Highest education,b n (%) | |||
| Less than high school | 13 (4.1) | 25 (6.7) | 38 (5.5) |
| High school | 159 (50.2) | 147 (39.4) | 306 (44.3) |
| Technical and further education (TAFE) | 72 (22.7) | 107 (28.7) | 179 (25.9) |
| University/postgraduate | 73 (23.0) | 89 (23.9) | 162 (23.5) |
| Employment status,a n (%) | |||
| Employed | 149 (47.0) | 165 (44.2) | 314 (45.5) |
| Retired/pensioner | 96 (30.3) | 125 (33.5) | 221 (32.5) |
| Unemployed/home duties/student/disabled | 72 (22.7) | 80 (21.4) | 152 (22.0) |
| Average household income in AUD,c n (%) | |||
| <30 000 | 94 (29.7) | 153 (41.0) | 247 (35.8) |
| 30 000—59 999 | 57 (18.0) | 71 (19.0) | 128 (18.6) |
| ≥60 000 | 85 (26.8) | 101 (27.0) | 186 (27.0) |
| Did not want to disclose | 73 (23.0) | 42 (11.3) | 115 (16.7) |
| Smoking start age, yearsd (mean ± SD) | 17.0 ± 5.3 | 16.6 ± 4.7 | 16.8 ± 5.0 |
| Heaviness of smoking index,e n (%) | |||
| Low nicotine dependence (score 0–2) | 126 (40.4) | 144 (38.6) | 270 (39.1) |
| Moderate nicotine dependence (score 3–4) | 147 (46.4) | 171 (45.8) | 318 (46.1) |
| High nicotine dependence (score 5–6) | 39 (12.3) | 54 (14.5) | 93 (13.5) |
| HADS-Af (mean ± SD) | 9.8 ± 2.8 | 9.9 ± 2.6 | 9.8 ± 2.7 |
| HADS-Df (mean ± SD) | 12.4 ± 1.7 | 12.6 ± 1.9 | 12.5 ± 1.8 |
| Quit smoking for at least 1 day in the last 12 months,d n (%) | 176 (55.5) | 187 (50.1) | 363 (52.6) |
| Used smoking cessation aid in past quit attempts,g n (%) | 140 (44.2) | 165 (44.2) | 305 (44.2) |
| Current readiness to quit, median (IQR)h | 5 (4–8) | 5 (4–7) | 5 (4–7) |
| Current motivation to quit, median (IQR)i | 6 (3–8) | 6 (4–8) | 6 (4–8) |
| Current confidence to quit, median (IQR)j | 5 (2–6) | 5 (3–7) | 5 (3–7) |
| Spirometry-confirmed COPD, n (%) | 82 (25.9) | 84 (22.5) | 166 (24.1) |
↵a Missing data, n = 3.
↵b Missing data, n = 5.
↵c Missing data, n = 14; Australian annual pension rate for singles is ∼AUD 24 000.
↵d Missing data, n = 4.
↵e Missing data, n = 9.
↵f Missing data, n = 11.
↵g Missing data, n = 8.
↵h Missing data, n = 9.
↵i Missing data, n = 6.
↵j Missing data, n = 7.
AUD = Australian dollars. COPD = chronic obstructive pulmonary disease. HADS-A = hospital anxiety and depression scale score for anxiety. HADS-D = hospital anxiety and depression scale score for depression. IQR = interquartile range. SD = standard deviation.