| Parameter | Responders | Non-responders | p Value |
| n = 685 (65.6%) | n = 359 (34.4%) | ||
| Randomisation, n (%): | |||
| ETC group | 338 (49.3) | 177 (49.3) | 0.990 |
| Control group | 347 (50.7) | 182 (50.7) | |
| Age in years, median (range) | 30 (18–81) | 29 (18–78) | <0.001 |
| Gender, n (%): | |||
| Male | 396 (57.8) | 234 (65.2) | 0.021 |
| Female | 289 (42.2) | 125 (34.8) | |
| No. of cigarettes smoked per day during the last 7 days (n = 1012), median (range) | 15 (1–60) | 15 (1–60) | 0.124 |
| Nicotine dependency (n = 1012), n (%):* | |||
| Low | 310 (45.3) | 114 (34.9) | |
| Medium | 158 (23.1) | 83 (25.4) | 0.002† |
| High | 217 (31.7)‡ | 130 (39.8)‡ | |
| Motivation to change smoking behaviour, n (%)§: | |||
| Unmotivated smokers | 375 (54.7) | 205 (57.1) | |
| Ambivalent smokers | 227 (33.1) | 104 (29.0) | 0.905† |
| Motivated smokers | 83 (12.1)‡ | 50 (13.9) | |
| Attempts to quit smoking during the last 12 months (n = 1012), n (%): | |||
| None | 395 (57.7) | 189 (57.8) | |
| 1 | 153 (22.3) | 79 (24.2) | 0.667† |
| 2–5 | 111 (16.2) | 48 (14.7) | |
| >5 | 26 (3.8) | 11 (3.4)‡ | |
| Hazardous alcohol consumption (n = 1012), n (%):¶ | |||
| Yes | 221 (32.3) | 128 (39.1) | 0.031 |
| No | 464 (67.7) | 199 (60.9) | |
| Illicit drug use (last 12 months) (n = 1012), n (%): | |||
| None | 430 (62.8) | 184 (56.3) | |
| 1–3 times | 109 (15.9) | 49 (15.0) | 0.006† |
| 4 times up to weekly | 84 (12.3) | 47 (14.4) | |
| Several times per week to daily | 62 (9.1)‡ | 47 (14.4)‡ | |
| School education (n = 1012), n (%): | |||
| Discontinued | 5 (0.7) | 8 (2.4) | |
| 10 years | 311 (45.4) | 173 (52.9) | <0.001 |
| 11–13 years | 364 (53.1) | 137 (41.9) | |
| In school education | 5 (0.7)‡ | 9 (2.8) | |
| Family doctor (n = 1012), n (%): | |||
| Yes | 507 (74.0) | 217 (66.4) | 0.012 |
| No | 178 (26.0) | 110 (33.6) |
*Measured with the Fagerstroem test for nicotine dependency, “low” = 0–2 points, “medium” = 3–4 points, “high” = 5–10 points; †Mantel–Haenszel test for trend; ‡does not sum up to 100% because of rounding error; §“When do you wish to stop smoking?” (“not within the next 6 months” = unmotivated smokers, “within the next 6 months but not within the next 4 weeks” = ambivalent smokers and “within the next 4 weeks” = motivated smokers); ¶measured with the AUDIT-PC questionnaire: “no” = 0 to 4 points, “yes” = 5 to 20 points.
AUDIT-PC, Alcohol Use Disorder Identification Test – Primary Care; ETC, Emergency Department-initiated tobacco control.