Risk factors

OR

P value

Severe low weight during the first quarter Body mass index < 18 kg/m²

<8.81

0.0044

Number of prenatal follow-up < 3

4.96

0.002

Height < 155 cm

4.44

0.0003

High level of stress

3.36

0.043

Passive smoking

2.57

0.040

Malaria during the pregnancy

2.22

0.024