| N = 368 | 22–22+ 6w n = 0 | 23–23+ 6w n = 7 | 24–24+ 6w n = 22 | 25–25+ 6 n = 47 | 26–26+ 6w n = 98 | 27–27+ 6w n = 194 | Z/χ2 | P | |
---|---|---|---|---|---|---|---|---|---|---|
RDS | 0 | 46(12.5) | - | 2(28.6) | 4(18.2) | 4(8.5) | 15(15.3) | 21(10.8) | 25.796 | < 0.001 |
1 | 204(55.4) | - | 1(14.3) | 9(40.9) | 18(38.3) | 49(50) | 127(65.5) | Â | Â | |
2 | 118(32.1) | - | 4(57.1) | 9(40.9) | 25(53.2) | 34(34.7) | 46(23.7) | Â | Â | |
II to III level BPD | 148(40.2) | - | 2(28.6) | 10(45.5) | 24(51.1) | 47(48) | 65(33.5) | 9/030 | 0.056 | |
VAP | 22(6.0) | - | 1(14.3) | 1(4.5) | 4(8.5) | 7(7.1) | 9(4.6) | 3.265 | 0.443 | |
hsPDA | 132(35.9) | - | 0 | 9(40.9) | 24(51.1) | 35(35.7) | 64(33) | 9.500 | 0.045 | |
ROP | 255(69.8) | - | 1(14.3) | 11(50) | 39(83) | 76(77.6) | 130(67) | 20.380 | < 0.001 | |
ROP requiring intervention | 41(13.1) | - | 1(14.3) | 4(18.2) | 8(17.0) | 16(16.3) | 13(6.7) | 10.209 | 0.027 | |
NEC ≥ 2 | 29(7.9) | - | 0 | 1(4.5) | 4(8.5) | 12(12.2) | 12(6.2) | 3.410 | 0.445 | |
BI | 84(22.8) | - | 2(28.6) | 7(31.8) | 16(34) | 21(21.4) | 38(19.6) | 5.418 | 0.247 | |
IVH ≥ 3 | 40(10.9) | - | 2(28.6) | 6(27.3) | 6(12.8) | 10(10.2) | 16(8.2) | 9.355 | 0.040 | |
PVL | 63(17.1) | - | 1(14.3) | 3(13.6) | 15(31.9) | 17(17.3) | 29(14.9) | 3.710 | 0.576 | |
MBDP | 21(5.7) | - | 1(14.3) | 1(4.5) | 5(10.6) | 2(2) | 12(6.2) | 6.468 | 0.126 | |
PNAC | 68(18.5) | - | 1(14.3) | 1(4.5) | 4(8.5) | 21(21.4) | 41(21.1) | 7.350 | 0.096 | |
EOS | 34(9.2) | - | 2(28.6) | 2(9.1) | 5(10.6) | 8(8.2) | 17(8.8) | 3.396 | 0.439 | |
LOS | 52(14.1) | - | 1(14.3) | 2(9.1) | 4(8.5) | 18(18.4) | 27(13.9) | 2.949 | 0.542 | |
Morbidities of major serious disease | 221(60.1) | - | 3(42.9) | 16(72.7) | 32(68.1) | 64(65.3) | 106(54.6) | 11.743 | 0.008 | |
All-cause mortality | 1691/2004(84.4) | 189/189(100) | 223/223(100) | 394/407(96.8) | 389/428(90.9) | 270/357(75.6) | 226/400(56.5) | 394.360 | < 0.001 | |
Survival rate of EPIs transfered to NICU | 313/469(66.7) | 0 | 0 | 13/38(34.2) | 39/75(52) | 87/124(70.2) | 174/216(80.6) | 75.708 | < 0.001 | |
Survival rate of EPIs received complete care | 313(85.1) | - | 0 | 13(59.1) | 39(83.0) | 87(88.8) | 174(89.7) | 38.718 | < 0.001 | |
Survival rate of EPIs without major serious diseases | 116(31.5) | - | 0 | 2(9.1) | 9(19.1) | 27(27.6) | 78(40.2) | 19.142 | 0.001 |