General characteristics of premenopasual and postmenopausal women according to use of oral contraceptive pill (OCP) and hormonal replacement therapy (HRT)
| Characteristic |
Premenopausal −OCP (n=1159) |
Premenopausal + OCP (n=377) |
Postmenopausal −HRT (n=2558) |
Postmenopausal + HRT (n=458) |
| Age (years) | 40.0 (9.4) | 38.5 (10.6) | 67.1 (8.9) | 62.0 (8.1) |
| Length of school education (years) | 10.9 (1.9) | 10.8 (2.0) | 8.4 (1.8) | 8.8 (1.9) |
| Smoking (%): | ||||
| Never smokers | 32.4 | 31.3 | 31.7 | 30.6 |
| Ex-smokers | 20.1 | 21.2 | 43.8 | 21.6 |
| Current smokers | 47.5 | 47.5 | 24.5 | 47.8 |
| BMI (kg/m2) | 23.6 (3.9) | 23.6 (3.9) | 26.1 (4.9) | 24.7 (3.8) |
| Familial disposition to asthma (%) | 21.1 | 19.4 | 22.9 | 21.0 |
Values are mean (SD).