Parameters

Effective

Lethality

P

OR

ICà95%

Gestational Age

< 32WA^*

33-36WA^*

193

109

107 (55.44%)

27 (24.77%)

0.0000

3.77

2.25-6.35

Birth weight

< 1500 g

1500-1999 g

≥ 2000 g

177

95

30

102 (57.63%)

27 (28.42%)

5 (16.67%)

0.0000

0.0001

0.0015

3.95

0.37

0.22

2.40-6.52

0.22-0.62

0.08-0.60

APGAR1^st minute

< 7

7-10

88

174

50 (56.82%)

65 (37.36%)

0.0027

2.20

1.31-3.72

Sex

Male Female

147

155

70 (45.16%)

64 (43.54%)

0.77

1.07

0.68-1.68

Respiratory distress

Yes No

132

170

81 (61.36%)

53 (31.18%)

0.0000

3.50

2.17-5.65

Neurological signs

Yes No

197

105

119 (60.41%)

15 (14.29%)

0.0000

9.15

4.94-16.96

Hyperthermia

Yes No

28

274

12 (42.85%)

122 (44.52%)

0.86

0.93

0.42-2.05

Hypothermia

Yes No

171

131

87 (50.87%)

47 (35.87%)

0.0093

1.85

1.16- 2.95

Complication

Yes No

207

95

107 (51.69%)

27 (28.42%)

0.00015

2.70

1.5980- 4.54