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Table 3 Meta-analyzed adjusted odds ratios of the association between short and long birth intervals and adverse neonatal and infant outcomes (36-<60 months as reference)

From: The associations of birth intervals with small-for-gestational-age, preterm, and neonatal and infant mortality: a meta-analysis

  <18 months
aOR (95% CI)
18-<24 months
aOR (95% CI)
24-<36 months
aOR (95% CI)
36-<60
months
≥60 months
aOR (95% CI)
SGA 1.51 (1.31, 1.75) 1.23 (1.03, 1.48) 1.05 (0.87, 1.27) Ref 1.22 (1.07, 1.39)
Preterm 1.58 (1.19, 2.10) 1.16 (0.94, 1.42) 1.02 (0.87, 1.19) Ref 1.05 (0.88, 1.26)
Term-SGA* 1.39 (1.18, 1.64) 1.15 (0.98, 1.35) 1.01 (0.83, 1.22) Ref 1.14 (1.03, 1.27)
Preterm-AGA* 1.45 (1.05, 1.99) 1.09 (0.86, 1.37) 1.01 (0.85, 1.21) Ref 1.06 (0.87, 1.29)
Preterm-SGA* 3.04 (2.02, 4.58) 1.58 (1.01, 2.49) 0.92 (0.65, 1.31) Ref 1.19 (0.87, 1.63)
Neonatal mortality 1.49 (0.93, 2.37) 1.07 (0.52, 2.22) 0.95 (0.62, 1.47) Ref 1.01 (0.68, 1.49)
Infant mortality 1.83 (1.19, 2.81) 1.08 (0.66, 1.78) 1.17 (0.96, 1.43) Ref 1.01 (0.84, 1.22)
  1. *Reference: Term-AGA