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Table 1 Frequencies of adverse pregnancy outcomes among 1229 HIV-infected pregnant women recruited in Lusaka, Zambia

From: Pregnancy loss and role of infant HIV status on perinatal mortality among HIV-infected women

  No. Ratio of event per 100 live-born infants
Miscarriage 36 3.1
Stillbirth 30 2.6
# of live-born infants with birth records N = 1132 Rate a (95% CI)
Neonatal mortality (0–28 days) 47 0.043 (0.032–0.057)
Early mortality (0–70 days) 67 0.063 (0.050–0.079)
Birth Weight b   Percentage
<1500 g 15 1.3
1500–1999 g 33 2.9
2000–2499 g 113 10.1
≥2500 g 963 85.7
Mean ± SD, g 2947.7 ± 531.7  
Gestation c   
<32 weeks 94 8.4
32–33 weeks 88 7.9
34–36 weeks 260 23.3
≥37 weeks 672 60.3
Mean ± SD, weeks 37.6 ± 4.05  
  1. a Calculated using Kaplan-Meier life table methods.
  2. b 8 infants are missing data on birth weight and weight at 1 week visit.
  3. c 18 infants are missing data on gestational weeks estimated at enrollment. Data suggested a systematic underestimation of gestation by 2–3 weeks. Thus we estimate that only 16.3% of births were preterm by conventional definitions of <37 weeks.