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Table 3 Obstetric related risk factors and prediction of mortality

From: Determinants of survival in very low birth weight neonates in a public sector hospital in Johannesburg

Variable (Valid cases)

 

Category total

Survived (%)

Died (%)

P value

Odds ratio

95% CI of OR

SGA (461)

Yes

178

143 (80)

35 (20)

0.001

2.07

1.32 - 3.22

 

No

283

188 (66)

95 (34)

   

Gender (470)

Female

251

192 (76.5)

59 (23.5)

0.004

1.8

1.24 - 2.69

 

Male

219

141 (64.4)

78 (35.6)

   

Antenatal care (474)

Yes

256

197 (77)

59 (23)

0.001

1.97

1.32 - 2.95

 

No

218

137 (63)

81 (37)

   

Antenatal corticosteroids (474)

Given

173

131 (75.4)

42 (24.3)

0.057

1.51

0.99 - 2.30

 

Not given

301

203 (67.4)

98 (32.6)

   

HIV exposed (328)

Yes

120

84 (70)

36 (30)

0.057

0.61

0.36 - 1.02

 

No

208

165 (80)

43 (21)

   

Syphilis Exposed (474)

Yes

12

7 (58.4)

5 (42)

0.351

0.58

0.18 - 1.85

 

No

462

327 (71)

135 (29)

   

Place of birth (470)

    

< 0.001

  
 

Inborn

383

286 (74.7)

97 (25.3)

 

1

 
 

BBA

51

20 (39)

31 (61)

 

0.22

0.12 - 0.40

 

Out born

36

24 (66)

12 (33)

 

0.68

0.33 - 1.41

Mode of delivery (464)

    

< 0.001

  
 

NVD

197

123 (62.4)

74 (37.6)

 

1

 
 

Vaginal Breech

25

13 (52)

12 (48)

 

0.65

0.28 - 1.50

 

Elective CS

12

9 (75)

3 (25)

 

1.80

0.47 - 6.88

 

Emergency CS

229

182 (79.5)

47 (20.5)

 

2.33

1.51 - 3.59

Presentation (448)

Vertex

401

290 (72.3)

111 (27.7)

0.541

0.82

0.43 - 1.57

 

Breech

47

32 (68.11)

15 (31.9)

   

Resuscitation at birth (474)

Yes

154

91 (59.1)

63 (40.9)

< 0.001

0.46

0.30 - 0.69

 

No

320

243 (75.9)

77 (24.1)

   

Hypothermia at birth (474)

Yes

13

5 (38.5)

8 (61.5)

0.01

0.25

0.08 - 0.78

 

No

461

329 (71.4)

132 (28.6)

   

5 minute APGAR Score (409)

Score >= 6

304

231 (76)

73 (24)

0.093

1.52

0.93 - 2.46

 

Score < 6

105

71 (67.6)

34 (32.4)

   
  1. Note: Valid cases = those with no missing data, thus, a complete case analysis
  2. Percentages are reported for rows