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Table 1 Prevalence of preterm birth groups, by region

From: Maternal morbidity and preterm birth in 22 low- and middle-income countries: a secondary analysis of the WHO Global Survey dataset

  Global Latin America Africa Asia
Number of facilities 122 54 27 64
Number of liveborn singleton deliveries 172,461 64,181 30,544 77,736
Term births (> = 37 weeks) 158,295 (91.8) 59,288 (92.4) 28,284 (92.6) 70,723 (91.0)
All preterm births (< 37 weeks) 14,166 (8.2) 4,893 (7.6) 2,260 (7.4) 7,013 (9.0)
Spontaneous preterm birth (spPTB)a 10,750 (75.9) 3,336 (68.2) 1,990 (88.1) 5,424 (77.3)
Provider-initiated preterm births (piPTB)a 3,404 (24.0) 1,550 (31.7) 266 (11.8) 1,588 (22.6)
Preterm birth, labour status unknowna 12 (0.1) 7 (0.1) 4 (0.2) 1 (0.0)
Medically indicated piPTBb 2,920 (85.8) 1,412 (91.1) 236 (88.7) 1,272 (80.1)
Not medically indicated piPTBb 333 (9.8) 79 (5.1) 7 (2.6) 247 (15.6)
Indication unknown, piPTBb 151 (4.4) 59 (3.8) 23 (8.6) 69 (4.3)
  1. aDenominator is all preterm births.
  2. bDenominator is all provider-initiated preterm births.