| Caste groups, Mean (SD) or Median | Pfor trend | |||
---|---|---|---|---|---|
 | Brahmin | Chetri | Vaishya | Shudra | |
(N = 37) | (N = 13) | (N = 26) | (N = 18) | ||
In utero exposure of toxic elements (n = 94), mean |  |  |  |  |  |
Arsenic (μg/L)§ | 1.3 (1.4) | 1.3 (0.3) | 1.7 (0.7) | 1.5 (0.5) | <0.01 |
Lead (μg/L)§ | 30.5 (40.3) | 31.4 (27.7) | 36.7 (39.6) | 26.4 (17.5) | 0.59 |
Anthropometric characteristics, mean | Â | Â | Â | Â | Â |
Birth weight (kg) (n = 94) | 3.0 (0.5) | 3.0 (0.4) | 3.1 (0.4) | 3.1 (0.5) | 0.16 |
Body weight (kg) at 6 months after birth (n = 94) | 7.3 (1.1) | 7.3 (0.8) | 7.3 (0.7) | 7.3 (0.8) | 0.93 |
Body weight (kg) at 24 months after birth (n = 89) | 11.5 (1.6) | 11.0 (1.3) | 10.9 (1.2) | 10.8 (1.0) | 0.09 |
Body weight (kg) at 36 months after birth (n = 83) | 12.9 (1.7) | 12.5 (1.1) | 12.4 (1.4) | 12.6 (1.3) | 0.30 |
NBAS III cluster score at birth (n = 94), median |  |  |  |  |  |
Habituation | 27 | 27 | 28 | 26.5 | 0.47 |
Orientation | 45 | 37 | 44 | 38 | 0.30 |
Motor system | 26 | 24 | 25.5 | 26 | 0.21 |
State organization | 11 | 14 | 15.5 | 9.5 | 0.58 |
State regulation | 28 | 28 | 25 | 26 | <0.01 |
Autonomic stability | 13 | 13 | 13 | 13 | 0.26 |
Abnormal reflex | 7 | 7 | 5 | 5 | 0.23 |
BSID II cluster score at 6 months after birth (n = 94), median |  |  |  |  |  |
MDI | 104 | 104 | 107 | 104 | 0.07 |
PDI | 103 | 100 | 101.5 | 104 | 0.80 |
BRS | 122 | 127 | 124 | 121 | 0.39 |
BSID II cluster score at 24 months after birth (n = 89), median |  |  |  |  |  |
MDI | 94 | 94 | 94 | 92 | 0.49 |
PDI | 100 | 107 | 104.5 | 100 | 0.75 |
BRS | 106 | 114 | 109.5 | 104 | 0.43 |
BSID II cluster score at 36 months after birth (n = 83), median |  |  |  |  |  |
MDI | 95 | 93 | 97 | 90 | 0.19 |
PDI | 116 | 116 | 119 | 116 | 0.60 |
BRS | 106 | 104 | 102 | 104 | 0.17 |