Table 1 The amount and duration of smoking in acne and control patients
Smoking habit | Acne patients (12) | Control patients (27) | |
|---|---|---|---|
Amount | 1 cigarette per week | 2 | 5 |
1–6 cigarettes per week | 2 | 9 | |
> 6 cigarettes per week | 8 | 12 | |
Not mentioned | 0 | 1 | |
Duration | < 3 months | 1 | 2 |
3 months – 3 years | 6 | 7 | |
> 3 years | 5 | 16 | |
Not mentioned | 0 | 2 | |