Table 3 A model of predictors of developmental delay at baseline n = 150

Child sex

Male

1

1

Female

0.36

0.11–1.17

0.09

0.32

0.09–1.15

0.082

Maternal age

Per 1 year

1.02

0.92–1.12

0.705

1.03

0.91–1.16

0.604

Delivery mode

Vaginal

1

1

Cesarean

0.78

0.45–1.35

0.377

0.61

0.18–2.01

0.410

Gestational week

Per 1 week

0.58

0.35–0.97

0.038

0.63

0.35–1.12

0.116

Birthweight

Per 100 g

0.91

0.80–1.03

0.14

0.96

0.83–1.11

0.629

Apgar score at 1 min

Per score 1

0.8

0.38–1.70

0.24

0.83

0.36–1.92

0.671

Hyperbilirubinemia

< 10 mg/dL

1

1

> 10 mg/dL

0.57

0.20–1.61

0.29

0.53

0.16–1.66

0.278

Season of birth

October–March

1

1

April–September

0.63

0.22–1.75

0.377

0.51

0.17–1.54

0.237

Parity

Primiparous

1

1

Parous

0.84

0.29–2.44

0.757

1.01

0.26–3.72

0.998