Table 1.
Distribution of selected maternal and child socio-demographic variables, leukemia cases, and controls, children <2 year, Brazil, 1999–2007.
| Cases(n = 252), n (%) | Controls(n = 423), n (%) | p-Value | |
|---|---|---|---|
| SEX | |||
| Male | 130 (51.6) | 226 (53.4) | 0.643 |
| Female | 122 (48.4) | 197 (46.6) | |
| BIRTH WEIGHT (g) | |||
| <4000 | 234 (92.8) | 393 (93.0) | 0.470 |
| >4000 | 16 (6.2) | 21 (5.0) | |
| SKIN COLOR | |||
| White | 170 (67.5) | 153 (36.2) | <0.01 |
| Non-White | 77 (30.5) | 256 (60.5) | |
| PLACE OF BIRTH | |||
| Northeast | 52 (20.6) | 101 (24.1) | 0.552 |
| Midwest | 18 (7.1) | 31 (7.3) | |
| Southeast | 155 (61.5) | 237 (56.0) | |
| South | 27 (10.7) | 53 (12.5) | |
| MATERNAL AGE AT BIRTHa (YEARS) | |||
| <18 | 8 (3.2) | 60 (14.1) | <0.01 |
| 18–24 | 91 (36.1) | 182 (42.9) | |
| 25–34 | 117 (46.4) | 145 (34.2) | |
| >35 | 36 (14.3) | 36 (8.8) | |
| MATERNAL EDUCATION (YEARS) | |||
| <8 | 81 (32.1) | 206 (48.6) | <0.01 |
| >8 | 146 (57.9) | 209 (49.4) | |
aMaternal age at delivery.