Table 5 Odds of having developmental delay according to medical perinatal history and postnatal child problems

Mother had any health problem during pregnancy (n = 1500)

69 (4.6)

74 (4.9)

131(8.7)

113 (7.5)

 COR

 (CI)

2.74

(2.10–3.57)**

2.80

(2.17–3.61)**

2.36

(1.94–2.86)**

2.76

(2.24–3.40)**

Difficult labor (n = 3435)

90 (2.6)

101 (2.9)

182 (5.3)

153 (4.5)

 COR

 (CI)

1.47

(1.16–1.86)*

1.59

(1.27–1.99)

1.33

(1.13–1.57)*

1.53

(1.27–2.84)**

Child born less than 37 weeks (preterm pregnancy) (n = 229)

10 (4.4)

14 (6.1)

25 (10.9)

19 (8.3)

 COR

 (CI)

2.35

(1.24–4.46)**

3.20

(1.85–5.54)**

2.82

(1.85–4.29)**

2.79

(1.74–4.50**

Baby’s weight less than 2.5 kg at birth (n = 1077)

68 (6.3)

66 (6.1)

107 (9.9)

89 (8.3)

 COR

 (CI)

3.90

(2.98–5.09)**

3.52

(2.69–4.60)**

2.69

(2.18–3.33)**

2.99

(2.37–3.77)**

Child suffered from jaundice after birth (n = 6180)

145 (2.3)

158 (2.6)

339 (5.5)

270 (4.4)

 COR

 (CI)

1.34

(1.09–1.64)*

1.41

(1.16–1.72)*

1.50

(1.30–1.72)*

1.63

(1.40–1.91)**

Child suffered from cyanosis after birth (n = 313)

35 (11.2)

31 (9.9)

50 (16.0)

38 (12.1)

 COR

 (CI)

6.89

(4.78–9.93)**

5.61

(3.82–8.23)**

4.49

(3.29–6.12)**

4.38

(3.09–6.21)**

Child suffered from any convulsions (n = 355)

45 (12.7)

43 (12.1)

67 (18.9)

56 (15.8)

 COR

 (CI)

8.15

(5.86–11.3)**

7.23

(5.18–10.1)**

5.59

(4.25–7.36)**

6.10

(4.53–8.20)**

Child was admitted to an incubator for more than two days (n = 1770)

69 (3.9)

81 (4.6)

152 (8.6)

132 (7.5)

 COR

 (CI)

2.27

(1.75–2.96)**

2.60

(2.03–3.33)**

2.35

(1.96–2.82)**

2.79

(2.29–3.39)**

Child suffered from meningitis (n = 190)

14 (7.4)

20 (10.5)

26 (13.7)

21 (11.1)

 COR

 (CI)

4.14

(2.38–7.20)**

5.87

(3.66–9.43)**

3.66

(2.40–5.56)**

3.85

(2.43–6.10)**