Table 1.
Characteristics of Hispanic case-control study subjects, CCLS, 1995-2008
| Cases, n (%) | Controls, n (%) | |
|---|---|---|
| Study subjects | 323 (41.6) | 454 (58.4) |
| Sex | ||
| Male | 173 (53.6) | 240 (52.9) |
| Female | 150 (46.4) | 214 (47.1) |
| Age | ||
| Mean age, y(SE) | 5.3(3.4) | 5.3 (3.4) |
| Income | ||
| <$15,000 | 79 (24.5) | 74 (16.3) |
| $15,000-$29,999 | 88 (27.2) | 106 (23.35) |
| $30,000-$44,999 | 64 (19.8) | 87 (19.2) |
| $45,000-$59,999 | 41 (12.7) | 63 (13.9) |
| $60,000-$74,999 | 17 (5.3) | 42 (9.3) |
| ≥$75,000 | 34 (10.5) | 82 (18.1) |
| Race | ||
| White/Caucasian | 161 (49.8) | 235 (51.8) |
| African American | 14 (4.3) | 15 (3.3) |
| Native American | 0 (0) | 4 (0.9) |
| Asian or Pacific Islander | 26 (8.1) | 40 (8.8) |
| Mixed or others | 120 (37.2) | 156 (34.4) |
| Cytogenetics (case-only) | ||
| B-cell precursor (BCP) ALL | 297 (91.9) | - |
| BCP high-hyperdiploid ALL (>50 chromosome) | 97 (30.0) | - |
| Daycare attendance (Mean and SE) | ||
| Thousand child hours before 6 mo of age (SE) | 0.24 (1.15) | 0.18 (0.85) |
| Thousand child hours before 1 yr of age (SE) | 0.94 (3.83) | 0.65 (2.46) |