Table 1 Demographic and clinical features for the treatment and control group at baseline. Given as counts (%) unless otherwise stated
Treatment group n = 28 | Control group n = 28 | |
|---|---|---|
Age at inclusion (years), mean (SD) | 28.9 (4.5) | 29.9 (4.8) |
Age ≥ 30 | 13 of 28 (46) | 14 of 28 (50) |
Primiparous | 16 of 26 (62) | 15 of 27 (56) |
Education length (years)a, mean (SD) | 14.7 (4.0) | 14.8 (3.1) |
More than 12 y education baseline | 21 of 27 (78) | 21 of 25 (84) |
Heavy workload baseline | 6 of 28 (21) | 6 of 28 (21) |
BMI before pregnancy, mean (SD) | 23.4 (3.1) | 24.2 (4.0) |
Depressed in pregnancy | 1 of 27 (4) | 1 of 28 (4) |
Exercise before pregnancy | 5 of 26 (19) | 12 of 27 (44) |
Exercise in early pregnancy (week 1 to18) | 2 of 27 (7) | 5 of 27 (19) |
PP one year before pregnancy | 9 of 27 (33) | 4 of 27 (15) |
PP and LBP in early pregnancy (week 1 to 18) | 22 of 26 (85) | 22 of 27 (82) |
Sick leave in early pregnancyb (week 1 to 18) | 6 of 28 (21) | 3 of 28 (11) |