Table 1.
Baseline characteristics of participants (n = 589)
| Intervention group (n = 295) |
Control group (n = 294) | |
|---|---|---|
| Variable | ||
| Age in years [Mean (SDa)] | 27.9 (4.24) | 28.1 (4.46) |
| Gestational week [Mean (SD)] | 16.1 (2.47) | 16.1 (2.44) |
| Pre-pregnancy BMIb, kg/m2 [Mean (SD)] | 22.7 (21.0–25.7) | 22.7 (20.9–25.0) |
| Meeting PAc recommendations [n (%)] | 72 (24.4) | 65 (22.1) |
| Current smoker [n (%)] | 8 (2.8) | 15 (5.0) |
| Education [n (%)] | ||
| < 4 years university or college | 104 (35.4) | 88 (29.9) |
| ≥ 4 years university or college | 96 (32.5) | 113 (38.4) |
| Employment [n (%)] | ||
| Outside home | 240 (81.4) | 256 (87.1) |
| Sick leave | 6 (2.0) | 5 (1.7) |
| Income total household (US dollar)d [n (%)] | ||
| Low (< 50,000 per year) | 95 (32.2) | 88 (29.9) |
| Moderate (50,000–87,500 per year) | 82 (27.8) | 81 (27.6) |
| Good (> 87,500 per year) | 101 (34.2) | 101 (34.4) |
| No response or missing [n (%)] | 17 (5.8) | 24 (8.1) |
aSD; Standard Deviation
bBMI; Body Mass Index
cPA; Physical Activity, assessed with IPAQ-SF
dClassification are based on income and wealth statistics for Norwegian households in 2016