Table 1 Sociodemographic characteristics of children and their mothers.
From: Association of blood heavy metals with developmental delays and health status in children
Variables | Children with developmental delays (n = 89) | Children with typical development (n = 89) | P value |
|---|---|---|---|
Children | |||
Age (years) | 5.87 ± 0.19 | 6.15 ± 0.29 | 0.43 |
BMI (kg/m2) | 15.93 ± 0.35 | 16.43 ± 0.36 | 0.32 |
Birth weight (g) | 2976.95 ± 71.74 | 3101.90 ± 58.64 | 0.18 |
Sex | |||
Male | 46 (51.69) | 46 (51.69) | 1.00 |
Female | 43 (48.31) | 43 (48.31) | |
Mothers | |||
Age (years) | 35.68 ± 0.55 | 36.34 ± 0.56 | 0.36 |
BMI (kg/m2) | 22.81 ± 0.49 | 22.65 ± 0.40 | 0.79 |
Gestational age (years) | 29.76 ± 0.58 | 30.11 ± 0.54 | 0.65 |
Gestational weeks | 37.47 ± 0.37 | 38.37 ± 0.23 | 0.04 |
Parity | |||
One | 42 (47.19) | 52 (58.34) | 0.04 |
Two | 35 (39.33) | 34 (38.20) | |
Three or more | 12 (13.48) | 3 (3.37) | |
Educational level | |||
High school or lower | 45 (50.56) | 30 (33.71) | 0.03 |
College or higher | 44 (49.44) | 59 (66.29) | |
