Study Mean GA (wk) at delivery Antihypertensive medication during labor Placental abruption Pulmonary edema Cesarean delivery Postpartum hemorrhage
Fontenot, 2005 33.4 ± 3.7 vs. 34.4 ± 4.2 NR NR 0/48 (0%) vs 0/50 (0%) 27/50 (56%) vs. 31/48 (62%) NR
Ehrenberg, 2006 38.7 ± 1.7 vs 38.7 ± 1.7 NR NR NR 22/101 (21.7%) vs 25/95 (26.3%) NR
Darngawn, 2012 35.4 ± 3.6 vs 35.6 ±3.8 11/75 (14.7%) vs 14/75 (18.7%) NR NR 31/75 (41.3%) vs 32/75 (42.7%) NR
Maia, 2014 36.8±3.0 vs 37.2±4.9 NR NR 0/56 (0%) vs 0/56 (0%) 36/56 (64.3%) vs 33/56 (58.9%) 1/56 (1.8%) vs 2/56 (3.6%)
Kashanian, 2016 36.1±1.2 vs 36.2±1.3 13/79 (16.4%) vs 17/91 (16.5%) NR NR NR NR
Rimal, 2017 37.1±3.6 vs 37.4±4.1 NR 1/30 (8.3%) vs 1/30 (8.3%) NR 16/30 (53.3%) vs 12/30 (40%) 1/30 (8.3%) vs 1/30 (8.3%)
Vigil-De Gracia, 2017 36.1±3.1 vs 36.2±2.8 NR NR NR 96/141 (68.0%) vs 92/143 (64.3%) 1/141 (0.7%) vs 2/143 (1.3%)
Vigil-De Gracia, 2018 36.3±4.9 vs 36.3±3.6 NR 14/558 (2.5%) vs 18/555 (3.2%) NR 343/558 (61.4%) vs 337/555 (61.0%) 13/558 (2.3%) vs 11/555 (2.0%)
Total or Standard Mean: 36.3 vs 36.5 24/154 (15.6%) vs 31/166 (18.7%) 15/588 (2.6%) vs 19/585 (3.2%) 0/104 (0%) vs 0/106 (0%) 571/1011 (56.5%) vs 562/1002 (56.9%) 16/785 (2.0%) vs 16/784 (2.0%)