Table 2.

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

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