Table 1 Socio-demographic character istics of cases and controls
Socio-demographic characteristic | Cases (n = 299) | Controls (n = 351) | OR (95 % CI)a P value |
|---|---|---|---|
Age of the child | Â | Â | - |
 Mean (95 % CI) in months | 61.0 (56.8 to 65.3) | 70.2 (65.7 to 74.7) | 0.004 |
Sex | |||
 Male N (%) | 178 (59.5) | 203 (57.8) | 1.07 (0.74 to 1.46) 0.69 |
Maternal urban/rural residence | |||
 Rural residence N (%) | 103 (34.4) | 129 (36.7) | 0.90 (0.65 to 1.25) 0.57 |
Location in Cairo vs elsewhere | |||
 Cairo metropolitan area N (%) | 123 (41.1) | 139 (39.6) | 1.07 (0.78 to 1.47) 0.77 |
Cancer in relatives | |||
 Yes N (%) | 55 (18.4) | 60 (17.1) | 1.08 (0.72 to 1.63) 0.89 |
Maternal age group | |||
  ≤ 22 years-N (%) | 69 (23.1) | 111 (31.6) | Reference |
 23-29 years-N (%) | 153 (51.2) | 165 (47.0) | 1.49 (1.02 to 2.16) |
 30+ yr-N (%) | 77 (25.7) | 75 (21.4) | 1.65 (1.06 to 2.55) |
| Â | Â | Â | P for trend: 0.02 |
Maternal Education level | |||
 Secondary or higher education N (%) | 226 (75.6) | 211 (60.1) | 2.05 (1.46 to 2.88) <0.001 |