Irregular menstruation (%) | 20 | 20 | 21 | 25 | 25 | 28 | 21 | 23 |
<43 years (%) | 11 | 12 | 13 | 14 | 17 | 19 | 20 | 15 |
⩾43 years (%) | 36 | 33 | 35 | 43 | 37 | 43 | 26 | 37 |
Oral contraceptives (%) | 14 | 19 | 8.6 | 14 | 10 | 16 | 10 | 13 |
Pregnant (%) | 5.6 | 3.8 | 3.3 | 2.9 | 2.4 | 2.1 | 1.8 | 3.2 |
Post-menopausal (%) | 8.4 | 17 | 17 | 12 | 14 | 11 | 4.4 | 12 |
Hormone replacement therapy (%) | 3.4 | 18 | 9.0 | 8.0 | 7.6 | 6.9 | 1.3 | 7.6 |
Asthma (%) | 6.4 | 8.1 | 7.4 | 7.3 | 11 | 8.2 | 1.9 | 7.3 |
Wheeze with shortness of breath and when not having a cold (%) | 9.1 | 9.6 | 15 | 13 | 13 | 11 | 7.3 | 11 |
Night time symptoms (%)* | 8.3 | 11 | 14 | 15 | 14 | 13 | 22 | 14 |
Three or more asthma symptoms (%)† | 14 | 12 | 16 | 16 | 18 | 15 | 15 | 15 |
Hay fever or nasal allergy (%) | 23 | 25 | 26 | 27 | 24 | 24 | 23 | 24 |
Current smokers (%) | 33 | 29 | 37 | 31 | 22 | 20 | 28 | 28 |
Median age (years) | 39 | 41 | 40 | 39 | 41 | 40 | 35 | 39 |
Median BMI (kg/m2) | 22.5 | 23.9 | 23.0 | 23.7 | 23.9 | 23.2 | 22.4 | 23.3 |