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Table 1 Characteristics of 256 women in nausea and vomiting diary study

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     
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     
≤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     
Current or ex 37 (24%) 54 (35%) 42 (42%) 100 (39%)
Never 19 (19%) 54 (54%) 27 (47%) 156 (61%)
Previous live births     
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     
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     
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%)