Demographic characteristics of female participants, N = 256
| Characteristics | Nausea symptom, n (%) |
|---|---|
| Age, years | |
| ≤25 | 35 (13.7) |
| 26–30 | 97 (37.9) |
| ≥31 | 124 (48.4) |
| BMI,a kg/m2 | |
| ≤25 | 119 (46.7) |
| 26–30 | 63 (24.7) |
| ≥31 | 73 (28.6) |
| Smoking status | |
| Previous and current | 100 (39.1) |
| Never | 156 (60.9) |
| Live births, n | |
| 0 | 103 (40.2) |
| 1 | 105 (41.0) |
| >1 | 48 (18.8) |
| Miscarriages, n | |
| 0 | 145 (56.6) |
| 1 | 68 (26.6) |
| >1 | 43 (16.8) |
| Education level | |
| GCSE or no qualifications | 82 (32.0) |
| A levels | 65 (25.4) |
| Higher | 109 (42.6) |
↵a For BMI, n = 255 as one result was missing. BMI = body mass index.