Table 2.
Background characteristics of three groups as analysed (means except where stated, with SDs in parentheses)
| group A | group B | group C | |
| n | 6 | 6 | 7 |
| males (n) | 4 | 1 | 0 |
| age in years | 51.0 (7.9) | 39.8 (18.2) | 44.4 (8.4) |
| initial expired CO | 23.7 (12.3) | 17.2 (4.5) | 19.5 (7.8) |
| cigs/day | 17.5 (6.1) | 16.5 (4.4) | 17.5 (3.3) |
| years smoking | 34.3 (6.3) | 21.0 (11.4) | 24.8 (11.2) |
| quit attempts | 4.8 (6.7) | 6.8 (6.9) | 3.3 (1.9) |
| quits last 6 mo | 0.5 | 1.0 | 0.4 |
| live alone (n) | 2 | 1 | 0 |
| smoker in home (n) | 1 | 1 | 1 |
| modified Fagerstrom: max score 10 | 4.7 (1.6) | 4.3 (1.5) | 6.0 (2.0) |
| used NRT patch (n) | 6 | 4 | 7 |
| used 2 forms of NRT (n) | 6 | 2 | 6 |
NRT = nicotine replacement therapy