Table 3 Morbidity and mortality of infants with NRF

Mortality, n(%)

475(8.5)

100(32)^*

130(10.9)

99(4)^*

130(8.4)

16(13.7)

< 0.001

Survival without major morbidities, n(%)

3810(68.2)

84(26.8)^*

692(58.3)^*

1860(76.4)^*

1093(71.2)

81(69.8)

< 0.001

Major morbidities, n(%)

1299(23.2)

128(40.8)^*

364(30.7)^*

474(19.5)

314(30.5)

19(16.4)

< 0.001

BPD ≥ moderate, n(%)

210(3.8)

74(23.6)^*

107(9.0)^*

24(1.0)

4(0.3)

0(0)

< 0.001

NEC ≥ stage 2, n(%)

94(1.7)

21(6.7)^*

47(4.0)^*

21(0.9)

4(0.3)

1(0.9)

< 0.001

IVH/PVL ≥ grade 3, n(%)

56(1)

21(6.7)^*

24(2.0)^*

8(0.3)

3(0.2)

0(0)

< 0.001

ROP ≥ stage 3, n(%)

74(1.3)

17(5.4)^*

42(3.5)^*

14(0.6)

1(0.1)

0(0)

< 0.001

LOS, n(%)

1214(21.7)

101(32.2)^*

279(23.5)

460(18.9)^*

348(22.7)

26(22.4)

< 0.001