Table 1. Demographic and Medical Variables.
| Characteristic | Control (n = 108) |
Cancer (n = 199) |
|---|---|---|
| Age [mean (SD)] | 12.38 (3.0) | 12.32 (3.4) |
| Gender [n (%)] | ||
| Male | 44 (40.7) | 104 (52.2) |
| Female | 64 (59.3) | 95 (47.8) |
| Race [n (%)] | ||
| Caucasian | 99 (91.7) | 152 (76.4) |
| African-American | 6 (5.6) | 39 (19.6) |
| Other | 3 (2.7) | 8 (4.0) |
| SESa [n (%)] | ||
| I & II | 79 (73.8) | 98 (49.5) |
| III | 18 (16.7) | 53 (26.8) |
| IV & V | 10 (9.3) | 47 (23.7) |
| Parent Participantb [n (%)] | ||
| Mother | 98 (90.7) | 160 (81.2) |
| Father | 9 (8.3) | 33 (16.8) |
| Otherc | 1 (0.9) | 4 (2.0) |
| Diagnostic Category [n (%)] | ||
| ALLd | 47 (23.6) | |
| Other leukemia | 11 (5.5) | |
| HD/NHLe | 30 (15.1) | |
| Solid Tumor | 67 (33.7) | |
| Brain Tumor | 44 (22.1) | |
| Time Since Diagnosis [n (%)] | ||
| ≥ 1 month to 6 months | 52 (26.1) | |
| > 6 months to 18 months | 47 (23.6) | |
| > 18 months to < 5 years | 47 (23.6) | |
| > 5 years | 53 (26.6) | |
| Relapse/Recurrence [n (%)] | 30 (15.0) | |
a
Socioeconomic status per Hollingshead 4-factor index (Hollingshead, 1975);
b
Two cancer patients did not have a parent participate;
c
stepparent or grandparent as custodial guardian;
d
Acute lymphocytic leukemia;
e
Hodgkin's disease/Non-Hodgkin's lymphoma