Variable | Mean ± SD | Median [IQR] | Test result |
---|---|---|---|
Gender | |||
Boy | 2.40 ± 2.85 | 1.90 [1.10–3.20] | z = 0.86 p = 0.39 |
Girl | 2.58 ± 2.40 | 1.70 [1.10–2.80] | |
Age | |||
≥ 72 month | 3.03 ± 2.28 | 2.40 [1.10–4.60] | χ2 = 5.58 p = 0.13 |
12–24 month | 2.86 ± 4.15 | 1.85 [1.10–2.60] | |
24–48 month | 2.08 ± 1.34 | 1.70 [1.10–2.50] | |
48–72 month | 2.28 ± 2.19 | 1.70 [1.10–2.80] | |
Exposure to paint | |||
Yes | 2.92 ± 3.32 | 2.10 [1.20–3.30] | z = 1.39 p = 0.16 |
No | 2.39 ± 2.46 | 1.80 [1.10–2.75] | |
Exposure to soil | |||
Yes | 2.49 ± 1.61 | 2.20 [1.10–3.25] | z = 1.02 p = 0.31 |
No | 2.48 ± 2.75 | 1.80 [1.10–2.70] | |
Occupation of father | |||
Employee | 2.18 ± 1.33 | 1.90 [1.10–2.80] | χ2 = 3.25 p = 0.66 |
Martial | 2.82 ± 2.10 | 2.10 [1.10–4.15] | |
Laborer | 3.20 ± 3.96 | 1.80 [1.20–3.30] | |
Repairman | 2.30 ± 1.20 | 2.25 [1.35–2.97] | |
Driver | 1.79 ± 0.87 | 1.70 [1.00–2.30] | |
Self-employment | 2.42 ± 2.85 | 1.10 [1.70–1.70] | |
Education levels of parents | |||
Primary school | 3.04 ± 3.89 | 1.60 [1.10–3.20] | χ2 = 0.87 p = 0.83 |
Middle School | 2.46 ± 1.64 | 2.05 [1.12–3.30] | |
Diploma | 2.51 ± 2.96 | 1.80 [1.10–2.75] | |
Bachelor | 2.16 ± 1.43 | 1.80 [1.10–2.80] | |
Occupation of mother | |||
Housewife | 2.45 ± 2.64 | 1.80 [1.10–2.80] | χ2 = 1.79 p = 0.41 |
Employment | 2.47 ± 1.61 | 1.90 [1.12–3.42] | |
Self-employment | 3.29 ± 4.26 | 2.05 [1.40–3.32] | |
Opium use in parents | |||
Yes | 2.43 ± 1.53 | 2.10 [1.17–3.12] | z = 0.64 p = 0.52 |
No | 2.48 ± 2.66 | 1.80 [1.10–2.80] | |
Cigarette smoking | |||
Yes | 2.49 ± 2.70 | 1.90 [1.20–3.17] | z = 0.58 p = 0.56 |
No | 2.32 ± 1.41 | 1.80 [1.10–2.80] |