From: The onset of nausea and vomiting of pregnancy: a prospective cohort study
Characteristic | Average hours per day Nausea and Vomiting | Totals | ||
---|---|---|---|---|
 | <1,5 hours/day | (1.5,4] hours/day | ≥4 hours/day |  |
All women | 56 (22%) | 108 (42%) | 92 (36%) | 256 (100%) |
Age | Â | Â | Â | Â |
18-28 | 20 (24%) | 40 (48%) | 24 (29%) | 84 (33%) |
29-32 | 22 (23%) | 44 (45%) | 31 (32%) | 97 (38%) |
33-43 | 14 (19%) | 24 (32%) | 37 (49%) | 75 (29%) |
BMI | Â | Â | Â | Â |
≤25kg/m2 | 32 (27%) | 53 (45%) | 34 (29%) | 119 (46%) |
(25,30] kg/m2 | 18 (24%) | 30 (32%) | 28 (44%) | 63 (25%) |
>30 kg/m2 | 8 (11%) | 34 (47%) | 30 (42%) | 72 (28%) |
Smoking | Â | Â | Â | Â |
Current or ex | 37 (24%) | 54 (35%) | 42 (42%) | 100 (39%) |
Never | 19 (19%) | 54 (54%) | 27 (47%) | 156 (61%) |
Previous live births | Â | Â | Â | Â |
0 | 28 (27%) | 52 (50%) | 23 (22%) | 100 (40%) |
1 | 21 (20%) | 39 (37%) | 45 (43%) | 105 (41%) |
≥2 | 7 (15%) | 17 (35%) | 24 (50%) | 48 (19%) |
Miscarriages | Â | Â | Â | Â |
0 | 35 (24%) | 60 (41%) | 50 (34%) | 145 (57%) |
1 | 12 (18%) | 35 (51%) | 21 (31%) | 68 (27%) |
≥2 | 9 (21%) | 13 (30%) | 21 (49%) | 43 (17%) |
Education level | Â | Â | Â | Â |
Below A-level | 11 (17%) | 35 (56%) | 17 (27%) | 63 (25%) |
A-levels | 16 (19%) | 32 (38%) | 36 (43%) | 84 (33%) |
Degree level | 29 (27%) | 41 (38%) | 39 (36%) | 109 (43%) |