Characteristics of 120 unintentionally poisoned children and 360 matched controls in tertiary care public and private hospitals in Karachi
| Variables | Cases (%) | Controls (%) | Crude mOR (95% CI) |
| Age (months) | |||
| ≤12 | 13 | 39 | |
| >12–≤24 | 38 | 116 | 0.98§ |
| >24–≤36 | 34 | 109 | |
| >36–≤48 | 25 | 67 | |
| >48–≤60 | 10 | 29 | |
| Wealth index* | |||
| 1st tertile (upper) | 13 (10.8) | 81 (22.6) | Reference |
| 2nd tertile (middle) | 42 (35) | 149 (41.5) | 3.4 (1.4 to 8.0) |
| 3rd tertile (low) | 65 (54.2) | 129 (35.9) | 10.5 (3.9 to 28.6) |
| Number of siblings | |||
| No siblings | 17 (14.2) | 27 (7.5) | Reference |
| ≤2 | 60 (50.0) | 219 (60.8) | 0.6(0.4 to 1.1) |
| ≥3 | 43 (35.8) | 114 (31.7) | 1.7(0.8 to 3.7) |
| Child reported as aggressive | |||
| No | 26 (21.7) | 224 (62.2) | Reference |
| Yes | 94 (78.3) | 136 (37.8) | 6.6 (3.9 to 11.3) |
| History of previous poisoning | |||
| No | 112 (93.3) | 355 (9.6) | Reference |
| Yes | 8 (6.7) | 5 (1.4) | 5.5 (1.6 to 18.6) |
| History of sibling poisoning | |||
| No | 110 (92.4) | 346 (96.9) | Reference |
| Yes | 9 (7.6) | 11 (3.1) | 2.6 (1.0 to 6.8) |
| Father's education | |||
| ≥10 years of education | 24 (20.0) | 85 (23.6) | Reference |
| <10 years of education | 40 (33.3) | 111 (30.8) | 1.4 (0.7 to 2.7) |
| No formal education | 56 (46.7) | 164 (45.6) | 1.4 (0.6 to 2.8) |
| Mother's education | |||
| ≥10 years of education | 26 (21.7) | 134 (37.2) | Reference |
| <10 years of education | 33 (27.5) | 107 (29.7) | 2.4 (1.2 to 4.8) |
| No formal education | 61 (50.8) | 119 (33.1) | 3.8 (1.9 to 7.3) |
| Marital status of parents | |||
| Living together | 107 (89.2) | 349 (96.9) | Reference |
| Living apart | 13 (10.8) | 11 (3.1) | 3.5 (1.5 to 7.9) |
| Family type | |||
| Nuclear | 64 (53.3) | 149 (41.4) | Reference |
| Extended | 56 (46.7) | 211 (58.6) | 0.5 (0.3 to 0.8) |
| Storage of kerosene and petroleum in soft drink bottles | |||
| No | 65 (54.2) | 292 (81.8) | Reference |
| Yes | 55 (45.8) | 68 (18.9) | 4.3 (2.6 to 7.1) |
| Accessibility of hazardous chemicals and medicines† | |||
| Both chemicals and medicines stored safe | 61 (50.8) | 238 (66.1) | Reference |
| Either chemical or medicine stored safe | 42 (35) | 101 (28.1) | 1.7 (1.1 to 2.8) |
| Both chemical and medicine stored unsafe | 17 (14.2) | 21 (5.8) | 3.5 (1.6 to 7.3) |