Table 5.
Studied biochemical parameters as risk factors for below average cognitive composite score
| Biochemical parameter | N1 | Mean ± SD in infants having below average score | Mean ± SD in infants having average & above average score | Cutoff values indicating a deficiency | T | P |
|---|---|---|---|---|---|---|
| Cu (µg/dl) | 193 | 116.7 ± 41.2 | 130.0 ± 44.6 | < 63.7 µg/dl | 1.969 | 0.056 |
| Zn (µg/dl) | 193 | 83.5 ± 31.8 | 101.7 ± 47.9 | < 65 µg/dl | 4.396 | 0.015* |
| Vitamin B12 (pg/ml) | 193 | 981.6 ± 422.0 | 1109.4 ± 433.3 | < 203 pg/ml | 3.392 | 0.028* |
| Fe (µg/dl) | 193 | 163.0 ± 47.4 | 157.4 ± 54.2 | < 45 µg/dl | 0.701 | 0.484 |
| Hemoglobin (gm/dl) | 193 | 10.6 ± 1.2 | 10.8 ± 1.4 | < 11 gm/dl | 1.123 | 0.766 |
1
Biochemical parameters were done for a subsample of 193 children;
*
significant at p < 0.05.