Table 2.
Comparison between respondents followed up and respondents lost to follow-up after 6 weeks and 6 months.
| Characteristic | 6-week follow-up | 6-month follow-up | |||
| Followed up (n = 449) |
Lost to follow-up (n = 674) |
Followed up (n = 291) |
Lost to follow-up (n = 832) |
||
| Age (years), mean (SD) | 50.1 (12.2) | 49.4 (12.6) | 50.0 (12.2)* | 48.1 (12.3)* | |
| Male, % (n) | 44.5% (200) | 49.7% (335) | 45.5% (133) | 48.4% (402) | |
| In experimental condition, % (n) | 49.9% (224) | 48.7% (328) | 49.3% (144) | 49.1% (408) | |
| Educational level, % (n) | |||||
| High | 19% (85) | 22.7% (153) | 19% (54) | 22.1% (184) | |
| Medium | 45.9% (206) | 45.5% (307) | 45.2% (132) | 45.8% (381) | |
| Low | 35.2% (158) | 31.8% (214) | 36.3% (106) | 32.0% (266) | |
| Dutch, % (n) | 98.2% (441) | 97.3% (656) | 97.3% (284) | 97.8% (813) | |
| With cardiovascular diseases, % (n) | 12% (52) | 8% (54) | 11% (31) | 9% (75) | |
| With respiratory diseases, % (n) | 15% (68) | 14% (93) | 17% (49) | 13.5% (112) | |
| Number of cigarettes smoked/day, mean (SD) | 19.8 (12.1) | 17.8 (6.1) | 19.5 (11.4) | 21.0 (12.7) | |
| FTNDa score (range 1–10), mean (SD) | 4.8 (2.3) | 4.6 (2.3) | 4.7 (2.3)* | 5.2 (2.5)* | |
| Number of previous quit attempts, mean (SD) | 5.0 (10.6) | 5.5 (5.9) | 5.1 (10.0) | 5.6 (19.5) | |
a Fagerström Test for Nicotine Dependence.
*P < .05.