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Table 2 The univariate analysis of risk factors of preterm SGA infants (continuous variables)

From: The prevalence and risk factors of preterm small-for-gestational-age infants: a population-based retrospective cohort study in rural Chinese population

Risk factors SGA Median(quartile) Non-SGA Median(quartile) P value
Maternal age 24.00 (22.00–27.00) 24.00 (22.00–27.50) 0.571
Maternal height (meter) 159.00 (156.00–161.00) 160.00 (156.00–162.00) 0.081
Maternal weight (kilogram) 52.00 (48.00–56.00) 52.00 (49.00–57.00) 0.027
Maternal BMI before LMP (kg/m2) 20.32 (18.89–22.31) 20.70 (19.38–22.38) 0.063
Maternal red blood cell count (109/L) 4.22 (3.90–4.51) 4.13 (3.80–4.48) 0.005
Maternal eosinophil percentage 2.00 (0.73–3.48) 1.10 (0.10–2.50) 0.017
Maternal blood glucose level (mmol/L) 4.90 (4.39–5.50) 4.82 (4.30–5.30) 0.018
Paternal height (meter) 170.00 (168.00–173.25) 171.00 (169.00–175.00) 0.031