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Table 1 Selected characteristics of study participants for studies included in combined analysis of NASG, all study participants n = 3563

From: Combined analysis of the non-pneumatic anti-shock garment on mortality from hypovolemic shock secondary to obstetric hemorrhage

  Miller 2006 Miller 2010 Magwali 2012 Miller 2012 Maknikar 2012b
  Control NASG Control NASG Control NASG Control NASG Control NASG
  n = 158 n = 206 n = 607 n = 835 n = 469 n = 306 n = 574 n = 148 n = 139 n = 121
Demographics           
Age mean (SD) 27.3 (6.1) 27.4 (5.7) 29.0 (6.4) 29.3 (6.2) 28.0 (6.1) 27.9 (6.3) 26.7 (6.9) 26.5 (6.9)   
Parity mean (SD) 2.2 (2.2) 1.8 (1.8) 3.2 (2.8) 3.3 (2.8) 2.2 (1.7) 2.4 (1.9) 2.3 (2.2) 2.2 (2.1)   
Weeks pregnanta mean (SD) 37.9 (2.8) 38.1 (2.9) 37.4 (3.2) 37.6 (3.2) 36.7 (3.8) 37.2 (3.5) 36.3 (2.8) 36.4 (2.7)   
Definitive diagnosis           
Uterine atony 67 (43.0) 69 (33.5) 190 (31.3) 319 (38.2) 92 (19.6) 65 (21.2) 68 (11.8) 21 (14.2)   
Complications of abortion 25 (16.0) 35 (17.0) 45 (7.4) 93 (11.1) 146 (31.1) 89 (29.1) 95 (16.6) 26 (17.6)   
Placenta previa 4 (2.6) 6 (2.9) 40 (6.6) 31 (3.7) 16 (3.4) 12 (3.9) 33 (5.8) 4 (2.7)   
Placental abruption 4 (2.6) 11 (5.3) 79 (13.0) 98 (11.7) 45 (9.6) 30 (9.8) 36 (6.3) 8 (5.4)   
Ectopic pregnancy 9 (5.8) 19 (9.2) 95 (15.7) 85 (10.2) 26 (5.5) 9 (2.9) 20 (3.5) 7 (4.7)   
Molar pregnancy 3 (1.9) 5 (2.4) 7 (1.2) 11 (1.3) 2 (0.4) 2 (0.7) 3 (0.5) 0 (0.0)   
Ruptured uterus 5 (3.2) 7 (3.4) 46 (7.6) 32 (3.8) 30 (6.4) 16 (5.2) 19 (3.3) 5 (3.4)   
Placenta accreta 0 (0.0) 0 (0.0) 6 (1.0) 9 (1.1) 2 (0.4) 2 (0.7) 3 (0.5) 2 (1.4)   
Lacerations/Genital trauma 15 (9.6) 29 (14.1) 25 (4.1) 65 (7.8) 26 (5.5) 14 (4.6) 166 (28.9) 38 (25.7)   
Retained placenta 9 (5.8) 12 (5.8) 71 (11.7) 83 (9.9) 82 (17.5) 64 (20.9) 127 (22.1) 36 (24.3)   
Other 15 (9.6) 13 (6.3) 3 (0.5) 9 (1.1) 2 (0.4) 2 (0.7) 4 (0.7) 0 (0.0)   
Condition on study entry           
Est. blood loss, median (IQR) 750 (750) 975 (750) 1000 (500) 1200 (500) 1000 (850) 1000 (850) 700 (500) 781 (700)   
Mean arterial pressure < 60 17 (10.8) 32 (16.0) 181 (29.9) 321 (38.5) 188 (40.1) 158 (51.6) 150 (26.1) 42 (28.4)   
Unconscious 2 (1.3) 7 (3.4) 27 (4.5) 41 (5.0) 6 (1.3) 12 (3.9) 1 (0.2) 1 (0.7) 14 (10.1) 10 (8.3)
Outcomes           
Blood loss, median (IQR) 500 (450) 250 (400) 370 (550) 50 (175) 500 (550) 150 (200) 480 (450) 400 (370)   
Mortality 2 (1.3) 0 (0.0) 38 (6.3) 29 (3.5) 13 (2.8) 5 (1.6) 9 (1.6) 5 (3.4) 35 (28.9) 27 (19.4)
  1. a Excluding weeks pregnant ≤ 24 weeks.
  2. b Some data not available from Maknikar 2012.