变量

总体(n = 309)

验证集(n = 93)

训练集(n = 216)

P

产妇资料

高龄产妇,n (%)

117 (38)

36 (39)

81 (38)

0.942

产前感染,n (%)

105 (34)

30 (32)

75 (35)

0.773

妊娠期高血压,n (%)

121 (39)

32 (34)

89 (41)

0.32

妊娠期糖尿病,n (%)

51 (17)

9 (10)

42 (19)

0.051

顺产,n (%)

101 (33)

38 (41)

63 (29)

0.06

孕次,M (Q1, Q3)

2 (1, 3)

2 (1, 3)

2 (1, 3)

0.573

产次,M (Q1, Q3)

2 (1, 2)

2 (1, 2)

2 (1, 2)

0.523

产前激素使用次数,M (Q1, Q3)

2 (1, 4)

2 (1, 4)

2 (1, 4)

0.918

新生儿资料

ROP, n (%)

109 (35)

30 (32)

79 (37)

0.55

出生胎龄,周,Mean ± SD

28.46 ± 1.58

28.33 ± 1.50

28.52 ± 1.61

0.336

出生体重,g,M (Q1, Q3)

980 (890, 1100)

980 (890, 1100)

985 (890, 1100)

0.969

生后体重增加,g/天,M (Q1, Q3)

15.65 (11.3, 20.43)

15.65 (11.3, 19.13)

15.65 (11.74, 20.98)

0.573

恢复出生体重时间,M (Q1, Q3)

10 (7, 13)

10 (7, 14)

9 (7, 13)

0.104

多胎,n (%)

74 (24)

26 (28)

48 (22)

0.348

男性,n (%)

165 (53)

45 (48)

120 (56)

0.301

PDA, n (%)

159 (51)

47 (51)

112 (52)

0.93

NRDS, n (%)

259 (84)

80 (86)

179 (83)

0.602

PPHN, n (%)

44 (14)

14 (15)

30 (14)

0.927

BIPI, n (%)

58 (19)

17 (18)

41 (19)

1

PNAC, n (%)

74 (24)

18 (19)

56 (26)

0.273

肺炎,n (%)

206 (67)

59 (63)

147 (68)

0.511

败血症,n (%)

93 (30)

33 (35)

60 (28)

0.223

甲状腺功能减低,n (%)

115 (37)

27 (29)

88 (41)

0.068

NEC, n (%)

32 (10)

12 (13)

20 (9)

0.447

生后窒息,n (%)

199 (64)

58 (62)

141 (65)

0.718

出生贫血,n (%)

64 (21)

17 (18)

47 (22)

0.59

BPD, n (%)

276 (89)

82 (88)

194 (90)

0.82

机械通气,n (%)

104 (34)

29 (31)

75 (35)

0.636

无创呼吸机 ≥ 2周,n (%)

252 (82)

77 (83)

175 (81)

0.834

吸氧 ≥ 2周,n (%)

202 (65)

62 (67)

140 (65)

0.854

FiO2 ≥ 0.3使用24h以上,n (%)

156 (50)

50 (54)

106 (49)

0.527

钙磷补充,n (%)

196 (63)

60 (65)

136 (63)

0.896

输血≥3次,n (%)

171 (55)

50 (54)

121 (56)

0.81

PS治疗,n (%)

160 (52)

51 (55)

109 (50)

0.561

激素治疗,n (%)

78 (25)

23 (25)

55 (25)

1

利尿剂治疗,n (%)

95 (31)

28 (30)

67 (31)

0.98

肠外营养天数,M (Q1, Q3)

28 (19, 41)

27 (19, 39)

28.5 (19, 43.25)

0.694

禁食天数,M (Q1, Q3)

1 (0, 3)

1 (0, 3)

1 (0, 4)

0.831

咖啡因天数,M (Q1, Q3)

45 (33, 59)

45 (33, 58)

44.5 (34, 59)

0.751

肠内微量喂养开始时间,M (Q1, Q3)

1 (0, 2)

1 (0, 2)

1 (0, 2)

0.542