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Table 3 Odds Ratio for maternal and neonatal outcomes among SGA neonates and their mothers (assuming different centile thresholds) compared with the reference group with a birth weight between 40th-60th centiles according to each chart

From: Performances of birthweight charts to predict adverse perinatal outcomes related to SGA in a cohort of nulliparas

Adverse outcomes
and centile thresholds
Birth in Brazil
OR (95%CI)
GROW-Customised
OR (95%CI)
Intergrowth-21st
OR (95%CI)
WHO-FGC
OR (95%CI)
All caesarean section
  < p5 0.41 [0.21 – 0.81] 0.56 [0.30 – 1.06] 0.51 [0.27 – 1.00] 0.47 [0.24 – 0.93]
  < p10 0.62 [0.38 – 1.02] 0.53 [0.32 – 0.87] 0.57 [0.34 – 0.93] 0.56 [0.34 – 0.93]
  < p15 0.61 [0.40 – 0.95] 0.55 [0.35 – 0.84] 0.55 [0.35 – 0.85] 0.64 [0.41 – 0.99]
Need for NICU admission
  < p5 1.24 [0.47 – 3.27] 1.26 [0.44 – 3.61] 1.34 [0.50 – 3.57] 1.83 [0.71 – 4.72]
  < p10 1.01 [0.45 – 2.25] 1.28 [0.56 – 2.94] 1.22 [0.55 – 2.68] 1.42 [0.63 – 3.19]
    < p15 1.01 [0.50 – 2.05] 1.19 [0.56 – 2.52] 1.04 [0.50 – 2.15] 1.08 [0.50 – 2.33]
Neonatal morbidity
    < p5 1.37 [0.36 – 5.25] 1.13 [0.23 – 5.62] 0.97 [0.20 – 4.74] 1.32 [0.26 – 6.74]
    < p10 0.89 [0.27 – 2.98] 0.86 [0.22 – 3.39] 0.97 [0.29 – 3.32] 1.70 [0.51 – 5.72]
    < p15 0.74 [0.24 – 2.25] 0.76 [0.22 – 2.64] 0.82 [0.26 – 2.57] 1.11 [0.33 – 3.70]
  1. Abbreviations: CI Confidence interval, NICU Neonatal intensive care unit, OR Odds ratio. Values in bold are statistically significant