Variable
Non-Randomised (Expectant Management) N= 182 Randomised (Expectant Management) N= 159
Comparison
All (Expectant Management) N= 341
Mean Maternal Age (years) 32.7 (5.3) 31.1 (6.1) MD 0.8 (0.2 to 1.5) 31.9 (5.7)
Non-white ethnicity n (%) 60 (33.0%) 44 (27.8%) RR 1.18 (0.85-1.64) 104 (30.6%)
Multiparous, n (%) 90 (49.5) 83 (52.2) RR 0.95 (0.77 to 1.17) 173 (50.7)
Body mass index, Kg/m2 30.2 (6.5) 30.1 (7.9) MD 0.1 (-0.7 to 0.8) 30.2 (7.2)
Maternal History of Pre-eclampsia n (%) 28 (31.1%) 29 (34.9%) RR 0.84 (0.53 to 1.35) 57 (32.9%)
Chronic Hypertension n (%) 20 (11.0%) 25 (15.7%) RR 0.70 (0.40 to 1.21) 45 (13.2%)
Chronic Kidney Disease n (%) 3 (1.6%) 2 (1.3%) RR 1.31 (0.22 to 7.74) 5 (1.5%)
Aspirin use 75 (41.4%) 68 (42.8%) RR 0.97 (0.75 to 1.24) 43 (42.1%)
Gestation at enrolment (weeks) Mean (SD)
35.4 (0.86)
35.5 (0.89)
MD -0.1 (-0.2 to 0.04)
35.4 (0.88)
Maternal BP 48 hours prior to enrolment (mmHg) (SD) Systolic Diastolic 153 (15) 94 (10) 155 (16) 95 (11) MD -0.8 (-2.4 to 0.8) MD -0.3 (-1.4 to 0.8) 154 (15) 94 (10)
Highest urinary PCR Number with measurement Mean (SD) 177 145 (238) 156 189 (337)
MD -22 (-54 to 10)
333 166 (289)
Suspected FGR on ultrasound 22 (12.1%) 25 (15.7%) RR 0.77 (0.45 to 1.31) 47/341 (13.8%)
Maternal PlGF (pg/mL) Number with measurement Mean (SD) Median (IQR) 178 37.1 (134.1) 12.0 (12.0-18.6) 157 43.6 (146.7) 12.6 (12.0-24.1)
MD -3.3 (-18.5 to 11.9)
335 40.16 (140.00) 12.0 (12.0-20.6)
PlGF ≥ 100 pg/mL 9 (5.1%) 7 (4.5%) RR 1.60 (0.64 to 4.02) 18 (5.8%)
PlGF 12-100 pg/mL 67 (43.5%) 75 (47.8%) RR 0.91 (0.71 to 1.16) 142 (45.7%)
PlGF <12 pg/mL 76 (49.4%) 75 (47.8%) RR 1.03 (0.82 to 1.30) 151 (48.6%)