Table 1. Baseline characteristics of participants for the total group (n = 598), the intervention group (n = 295) and the control group (n = 294).
| Total | Intervention group | Control group | |||
|---|---|---|---|---|---|
| Variable | n = 589 | n = 295 | n = 294 | ||
| Mean (SD) / Median (IQR) | p-value | ||||
| Age at inclusion (years) | 28.0 (4.35) | 27.9 (4.24) | 28.1 (4.46) | 0.50 | |
| Gestational week at inclusion | 16.1 (2.45) | 16.1 (2.47) | 16.1 (2.44) | 0.75 | |
| Prepregnancy weight (kg) | 65 (59–73) | 65 (59–74) | 64 (59–73) | 0.53 | |
| Prepregnancy BMI (kg/m2) | 22.7 (21.0–25.4) | 22.7 (21.0–25.7) | 22.7 (20.9–25.0) | 0.42 | |
| n (%) | |||||
| Educational level < 4 years college/university ≥4 years college/university |
192 (32.7) 209 (35.5) |
104 (35.4) 96 (32.5) |
88 (29.9) 113 (38.4) |
0.19 | |
| Occupation Employed outside home Long-term sick leave |
496 (84.2) 11 (1.9) |
240 (81.4) 6 (2.0) |
256 (87.1) 5 (1.7) |
0.055 | |
| Household income (NOK) ≤ 400,000 401,000–700,00 > 700,000 Don´t want to answer |
183 (31.2) 163 (27.7) 202 (34.5) 39 (6.6) |
95 (32.2) 82 (27.8) 101 (34.2) 17 (5.8) |
88 (30.1) 81 (27.7) 101 (34.6) 22 (7.5) |
0.98 |
|
| Daily smokers | 23 (3.8) | 8 (2.8) | 15 (5.0) | 0.40 | |
| Citizenship Norwegian Danish Polish Swedish German English From Asia Africa America Europe Australia Missing |
514 6 4 3 3 3 2 3 2 16 2 31 |
262 2 1 2 3 1 1 1 1 5 1 15 |
252 4 3 1 0 2 1 2 1 11 1 16 |
0.19 | |
SD; standard deviation
IQR; interquartile range
BMI; body mass index
NOK; Norwegian kroners