| Characteristics | Wald Χ2 | df | p-value | OR (95% CI) | |
| Age groups | 1 - 5 years | 1 | |||
| 6 - 10 years | 24.9 | 1 | <0.001 | 2.40 (1.70 - 3.38) | |
| More than 10 years | 44.4 | 1 | <0.001 | 3.34 (2.34 - 4.76) | |
| Sex | Female | 1 | |||
| Male | 4.34 | 1 | 0.04 | 1.35 (1.02 - 1.80) | |
| Water purification | Yes | 1 | |||
| No | 4.5 | 1 | 0.03 | 1.43 (1.02 - 2.00) | |
| Average monthly income | More than Rs 15,000 | 1 | |||
| Rs 10,001-15,000 | 4.54 | 1 | 0.03 | 1.65 (1.04 - 2.61) | |
| Rs 8000-10,000 | 1.35 | 1 | 0.25 | 1.28 (0.85 - 1.93) | |
| Less than Rs 8000 | 13.1 | 1 | <0.001 | 2.26 (1.45 - 3.51) | |
| Anemia | Present | 1 | |||
| Absent | 14.7 | 1 | <0.001 | 2.32 (1.51 - 3.57) | |
| Thrombocytopenia | Present | 1 | |||
| Absent | 4.54 | 1 | 0.03 | 4.07 (1.12 - 14.8) | |