Risk factors

HIV positive infant

HIV negative infant

odds ratio 95% CI

P

Maternal age

Maternal age < 35 years

9

247

1

Maternal age > 35 years

4

28

0.25 [0.07 - 0.88]

0.043

Parity

Primiparous

8

22

1

Multiparous

5

253

18.4 [5.55 - 61.05]

<0.001

Education level

Low level of education

10

159

1

Secondary and University level

3

116

2.43 [0.65 - 9.03]

0.14

Period of discovery of HIV status

Antenatal Discovery

4

259

1

Discovery during labor or postnatal

9

16

0.03 [0.01 - 0.10]

<0.001

Maternal WHO HIV clinical stage

Clinical stage 1

2

265

1

Clinical stage 2 and 3

11

10

31.45 [16.04 - 64.73]

<0.001

Maternal CD4 count (n = 162)

CD4 < 200/mm³

9

20

1

CD4 > 200/mm³

4

129

14.51[4.08 - 51.59]

<0.001

VL of the mother (n = 95)

VL > 1000 copies/mm³

10

22

1

VL < 1000 copies/mm³

3

60

9.09 [2.28 - 36.12]

<0.001

Labor time

Prolonged labor (>12 h)

10

58

1

normal hours of Labor

3

217

12.47 [3.32 - 46.79]

<0.001

Premature rupture of membranes

Presence of a PrM

9

20

1

Absence of a PRM

4

255

24.94 [7.12 - 87.30]

<0.001

Birth weight

Weight less than 2500 g

9

89

1

Weight of 2500 g and more

4

186

4.70 [1.40 - 15.68]

0.014

Newborn breastfeeding method

Strict Breastfeeding

3

266

1

Mixed or artificial breastfeeding

10

9

98.51 [23.08 - 420.49]

<0.001