Table 1

Associations between delayed language development at the age of 2 years and various parameters.

Parameters

Language development at 2 years old

Odds ratio

(95% CI)

Normal (n = 187)

Delayed (n = 16)

Gender

Male

94

14

6.9 (1.5–31.3)

Female

93

2

1.0

Maternal education

≤ 12 years

141

12

1.0 (0.3–3.2)

> 12 years

46

4

1.0

Monthly family income (in Thai baht, 1US$ = 40 baht)

≤ 50,000

175

15

0.4 (0.05–3.7)

> 50,000

12

1

1.0

Number of children in family

≤ 2

168

15

0.6 (0.07–4.7)

> 2

19

1

1.0

Number of televisions in households

≤ 2

150

13

0.9 (0.3–3.5)

> 2

37

3

1.0

Television in child's bedroom

Yes

123

7

0.4 (0.1–1.1)

No

64

9

1.0

Time spent on television viewing at 2 years old

≥ 2 hours per day

74

4

0.5 (0.2–1.6)

< 2 hours per day

113

12

1.0

Adjusted odds ratios with 95% confidence intervals were calculated using multivariate logistic regression adjusting for all factors presented in the table.

Ruangdaraganon et al. BMC Pediatrics 2009 9:34   doi:10.1186/1471-2431-9-34