Analysis of risk factors for parenteral nutrition-associated cholestasis in preterm infants: a multicenter observational study

Table 2 Comparison of the incidence of PNAC in different birth weight and gestational age groups

	Non-PNAC (n = 384)	PNAC (n = 81)	χ ²	P	Pearson’s correlation coefficient (r)
Gestational age at birth (n, %)	-
< 28w	48(65.8)	25(34.2)	18.066	<0.001	-0.180^*1
28 ~ 29w	130(83.3)	26(16.7)
>30w	206(87.3)	30(12.7)
Birth weight(n, %)	-
< 1000 g	45(57.7)	33(42.3)	42.904	<0.001	-0.277^*2
1000 g ~ 1499 g	274(86.2)	44(13.8)
≥ 1500 g	65(94.2)	4(5.8)

PNAC, parenteral nutrition-associated cholestasis. *1: P = 0.050; *2: P = 0.046

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