Table 1 Demographic and obstetric characteristics of study participants stratified by recommended level of activity restriction (n = 72)
Total | Strict AR | Moderate AR | Light AR | Unspecified AR | No AR | |
|---|---|---|---|---|---|---|
Overall participants, n (%) | 72 (100) | 22 (30.6) | 11 (15.3) | 2 (2.8) | 6 (8.3) | 31 (43.1) |
Maternal age (years) | ||||||
median (min–max) | 30.5 (22–43) | 31 (22–43) | 31 (23–42) | 27.5 (25–30) | 29.5 (26–31) | 31 (23–41) |
Parity | ||||||
Nulliparous, n (%) | 39 (54.2) | 11 (50) | 6 (54.5) | 1 (50) | 4 (66.7) | 17 (54.8) |
Gestational age at inclusion (full weeks) | ||||||
median (min–max) | 28 (22–33) | 27 (22–33) | 29 (22–32) | 25 (25–25) | 30 (24–33) | 28 (22–32) |
Threatened preterm delivery complications | ||||||
Preterm contractions, n (%) | 5 (6.9) | 4 (18.2) | 1 (9.1) | 0 | 0 | 0 |
Short cervixa / threatened pretem delivery | 26 (36.1) | 13 (59.1) | 9 (81.8) | 1 (50) | 3 (50) | 0 |
Vaginal bleeding | 4 (5.6) | 2 (9.1) | 1 (9.1) | 0 | 1 (16.7) | 0 |
PPROM | 2 (2.8) | 2 (9.1) | 0 | 0 | 0 | 0 |
Other complications | 5 (6.9) | 1 (4.5) | 0 | 1 (50) | 2 (33.3) | 1 (3.2) |
None | 30 (41.7) | 0 | 0 | 0 | 0 | 30 (96.8) |
Pregestational Body Mass Index (BMI) (kg/m2) | ||||||
median (min–max) | 21.63 (17.84–49.67) | 21.08 (17.84–49.67) | 23.41 (18.51–35.76) | 22.93 (19.61–26.26) | 20.28 (19.27–21.10) | 22.68 (18.61–36.83) |
Educational level (years) | ||||||
≤ 12, n (%) | 12 (16.7) | 7 (31.8) | 1 (9.1) | 0 | 2 (33.3) | 2 (6.5) |
13–14 | 17 (23.6) | 8 (36.4) | 4 (36.4) | 0 | 0 | 5 (16.1) |
15 + | 43 (59.7) | 7 (31.8) | 6 (54.5) | 2 (100) | 4 (66.7) | 24 (77.4) |
Work status | ||||||
Working, n (%) | 28 (38.9) | 2 (9.1) | 1 (9.1) | 0 | 1 (16.7) | 24 (77.4) |
Sick leave | 38 (52.8) | 20 (90.9) | 9 (81.8) | 2 (100) | 3 (50) | 4 (12.9) |
Unemployed / Outside workforce | 5 (6.9) | 0 | 1 (9.1) | 0 | 2 (33.3) | 3 (9.7) |
Smoking status | ||||||
Non-smoker, n (%) | 68 (94.4) | 20 (90.9) | 11 (100) | 2 (100) | 5 (83.3) | 30 (96.8) |
Partner status | ||||||
Cohabitant with partner, n (%) | 68 (94.4) | 20 (90.9) | 9 (81.8) | 2 (100) | 6 (100) | 31 (100) |
Level of pregestional physical activityb | ||||||
High, n (%) | 3 (4.2) | 1 (4.5) | 0 | 0 | 0 | 2 (6.5) |
Moderate | 34 (47.2) | 11 (50) | 3 (27.3) | 2 (100) | 3 (50) | 15 (48.4) |
Light | 33 (45.8) | 8 (36.4) | 8 (72.7) | 0 | 3 (50) | 14 (45.2) |
Sedentary | 2 (2.8) | 2 (9.1) | 0 | 0 | 0 | 0 |