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Table 2 Baseline characteristics and previous pregnancy outcomes of randomized non-pregnant women (n = 1354)

From: Participant recruitment and retention in longitudinal preconception randomized trials: lessons learnt from the Calcium And Pre-eclampsia (CAP) trial

Country Baseline characteristics Previous pregnancy outcomes
Age Parity Time since last complicated birth (months) Baby born alive Gestational age at delivery Eclampsia and/or HELLP syndrome Onset of pre-eclampsia (weeks)
n Mean [SD] n Mean [SD] n Mean [SD] Median (IQR) n % N Mean [SD] n % n Mean [SD]
Argentina 117 29.4 [7.3] 117 1.6 [1.0] 117 15.7 [17.8] 8.9 (15.0) 111 94.9 116 35.2 [4.0] 21 18.1 111 32.6 [5.3]
South Africa 955 30.2 [5.7] 955 1.9 [1.0] 909 25.6 [37.2] 10.4 (33.5) 467 48.9 765 30.5 [6.1] 246 29.9 655 28.0 [6.5]
Zimbabwe 282 30.7 [5.6] 282 2.3 [1.3] 266 20.7 [24.8] 11.5 (18.7) 107 37.9 277 30.9 [5.5] 66 24.4 267 27.9 [5.7]
Total 1354 30.3 [5.9] 1354 2.0 [1.1] 1292 23.7 [33.7] 10.5 (29.4) 685 50.6 1158 31.1 [6.0] 333 27.5 1033 28.4 [6.3]
  1. Abbreviations: IQR interquartile range, n number of participants, SD standard deviation, HELLP hemolysis, elevated liver enzymes and low platelets