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Table 2 Stratified analysis of the 19 studies included in meta-analysis based on study designs, sample size and proportion of health facility deliver, 1988-2012

From: The effect of health facility delivery on neonatal mortality: systematic review and meta-analysis

Stratifying variable Sample size Fixed-effects RR (95% CI) Random-effects RR (95% CI)
Study design    
  Prospective cohort 15,273 0.87 (0.75, 1.82) 0.82 (0.59, 1.14)
  Case-Control 6,994 0.70 (0.60, 0.81) 0.67 (0.43, 1.03)
  Cross-Sectional 1,570,085 0.37 (0.35, 0.38) 0.63 (0.41, 0.95)
  Community trial 14,453 0.23 (0.19, 0.33) 0.23 (0.19, 0.33)
Sample size    
  <1,000 4,350 0.62 (0.54, 0.71) 0.62 (0.47, 0.81)
  1,000-5,000 8,434 0.63 (0.52, 0.78) 0.56 (0.36, 0.85)
  5,001-10,000 26,970 0.76 (0.69, 0.83) 0.91 (0.62, 1.33)
  >10,000 1,567,051 0.32 (0.31, 0.34) 0.46 (0.25, 0.83)
% of health facility delivery    
  <50% 25,667 0.80 (0.71, 0.90) 0.74 (0.59, 0.94)
  ≥50% 1,581,138 0.37 (0.36, 0.39) 0.60 (0.43, 0.87)