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Table 2 Parity/age categories and their median and range of prevalence across included cohort studies

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

  Nulliparous Parity 1-2 (reference) Parity ≥3
Age <18 Median: 7.37%
Range: 0.13-12.74%
N*=9
Median: 0.76%
Range: 0.01-2.65%
N=0
Median: 0.00
Range: 0.00-0.22%
N=0
Age 18-<35
(reference)
Median: 28.27%
Range: 1.20-43.72%
N=14
Median: 39.93%
Range: 33.28-51.50%
N=14
Median: 13.42%
Range: 7.17-35.64%
N=14
Age ≥35 Median: 0.08%
Range: 0.00-1.54%
N=0
Median: 0.71%
Range: 0.00-6.30%
N=2
Median: 5.52%
Range: 0.17-9.19%
N=7
  1. Median and Range are described across all 14 cohort studies.
  2. *The Ns indicated reflects how many studies out of the 14 included studies have ≥5% prevalence in that category.