Table 1.
Characteristics of study population
| Hispanic | Non-Hispanic Whites | |||
|---|---|---|---|---|
| Cases | Controls | Cases | Controls | |
| Total | 300 | 406 | 225 | 369 |
| Age of child | Mean | SD | Mean | SD | Mean | SD | Mean | SD |
|---|---|---|---|---|---|---|---|---|
| Years | 5.6 | 3.6 | 5.5 | 3.6 | 5.6 | 3.4 | 5.7 | 3.8 |
| Sex of child | N | % | N | % | N | % | N | % |
|---|---|---|---|---|---|---|---|---|
| Male | 156 | 52.0 | 214 | 52.7 | 125 | 55.6 | 221 | 59.9 |
| Female | 144 | 48.0 | 192 | 47.3 | 100 | 44.4 | 148 | 40.1 |
| Race of child | ||||||||
| White | 114 | 38.0 | 116 | 28.6 | 225 | 100 | 369 | 100 |
| African American | 2 | 0.7 | 0 | 0.0 | – | – | – | – |
| Native American | 6 | 2.0 | 11 | 2.7 | – | – | – | – |
| Asian/Pacific Islander | 0 | 0.0 | 3 | 0.7 | – | – | – | – |
| Mixed/other | 178 | 59.3 | 276 | 68.0 | – | – | – | – |
| Cytogenetic grouping (cases only) | ||||||||
| Total B-cell precursor ALL | 279 | 93.0 | – | – | 202 | 89.8 | – | – |
| B-cell precursor high-hyperdiploid ALL | 85 | 28.3 | – | – | 62 | 27.6 | – | – |