Table 1 Characteristics of participants at baseline
Characteristics | Total sample | Proactive telephone counselling | Self-help brochure | p-value |
|---|---|---|---|---|
(N  =512) | (n  =256) | (n  =256) | ||
Age (M, SD) | 42.2 (5.4) | 42.3 (5.9) | 42.0 (5.1) | .59 |
Gender (%) | Â | Â | Â | Â |
 Female | 52.5 | 51.2 | 53.9 | .54 |
Nationality (%) | Â | Â | Â | Â |
 Dutch | 97.9 | 97.7 | 98.0 | .76 |
Education (%) | Â | Â | Â | Â |
 Low | 15.2 | 16.4 | 14.1 |  |
 Medium | 56.6 | 56.3 | 57.0 |  |
 High | 26.2 | 25.4 | 27.0 | .74 |
Marital status (%) | Â | Â | Â | Â |
 Never married | 12.5 | 12.9 | 12.1 |  |
 Married | 67.6 | 67.6 | 67.6 |  |
 Divorced/separated | 19.1 | 19.1 | 19.1 |  |
 Widowed | 0.6 | 0.4 | 0.8 | .94 |
Employment status (%) | Â | Â | Â | Â |
 Unemployed | 15.8 | 14.5 | 17.2 |  |
 Casual | 3.5 | 3.9 | 3.1 |  |
 Part time | 37.5 | 35.2 | 39.8 |  |
 Full time | 43.0 | 46.5 | 39.5 | .38 |
Cigarettes per day (M, SD) | 16.2 (7.8) | 15.7 (8.0) | 16.8 (7.7) | .14 |
Years of smoking (M, SD) | 24.9 (7.7) | 25.1 (7.4) | 24.6 (8.0) | .43 |
FTND score (M, SD) | 4.0 (2.4) | 4.0 (2.4) | 4.0 (2.4) | .81 |
Ever made a quit attempt (%) | Â | Â | Â | Â |
 Yes | 95.3 | 95.7 | 94.9 | .68 |
Quit attempt in past 12 months (%) | Â | Â | Â | Â |
 Yes | 36.1 | 38.3 | 34.0 | .31 |
Quitting intention (%) | Â | Â | Â | Â |
 Within one month | 33.6 | 33.6 | 33.6 |  |
 Within 6 months | 33.0 | 35.2 | 30.9 |  |
 Within 12 months | 23.4 | 20.3 | 26.6 |  |
 Not within 12 months | 9.7 | 10.9 | 8.6 | .31 |
Partner smoking (%) | Â | Â | Â | Â |
 Yes | 33.4 | 30.9 | 35.9 | .20 |
Cardiovascular disease | Â | Â | Â | Â |
 Yes | 1.6 | 1.2 | 2.0 | .48 |
Chronic respiratory illness | Â | Â | Â | Â |
 Yes | 7.8 | 7.0 | 8.6 | .51 |
Chronic respiratory illness child (%) | Â | Â | Â | Â |
 Yes | 14.6 | 14.5 | 14.8 | .90 |
Confidence in quitting (0-10) | 6.1 (2.0) | 6.1 (1.9) | 6.1 (2.0) | .82 |
Importance of quitting (0-10) | 8.9 (1.6) | 8.9 (1.5) | 8.9 (1.6) | .98 |