Table 1.
Demographic characteristics among cases and controls.
| Characteristic | Children's Oncology Group | Utah Population Database | ||
|---|---|---|---|---|
| Controls (n = 322) | Cases (n = 322) | Controls (n = 1300) | Cases (n = 1300) | |
| Child | ||||
| Sex, n (%) | ||||
| Male | 215 (66.8) | 215 (66.8) | 690 (53.1) | 69 (53.1) |
| Female | 107 (33.2) | 107 (33.2) | 610 (46.9) | 61 (46.9) |
| Race, n (%) | ||||
| White | 291 (90.4) | 287 (89.1) | 1215 (93.5) | 127 (97.7) |
| Non-white | 31 (9.6) | 35 (10.9) | 85 (6.5) | 3 (2.3) |
| Ethnicity, n (%) | ||||
| Non-Hispanic | 307 (95.9) | 303 (94.7) | 1233 (95.9) | 122 (93.8) |
| Hispanic | 13 (4.1) | 17 (5.3) | 53 (4.1) | 8 (6.2) |
| Age at diagnosis/enrollment (years), mean (SD) | 7.5 (5.4) | 7.6 (5.3) | 8.4 (6.2) | 8.4 (6.2) |
| Parents | ||||
| Maternal education, n (%) | ||||
| <High school | 39 (12.2) | 45 (14.1) | 116 (11.1) | 15 (13.2) |
| High school | 126 (39.4) | 132 (41.4) | 342 (32.7) | 39 (34.2) |
| >High school | 155 (48.4) | 142 (44.5) | 589 (56.2) | 60 (52.6) |
| Paternal education, n (%) | ||||
| <High school | 37 (11.8) | 54 (17.1) | 68 (7.0) | 9 (8.6) |
| High school | 111 (35.5) | 112 (35.3) | 242 (24.9) | 24 (23.1) |
| >High school | 165 (52.7) | 151 (47.6) | 663 (68.1) | 71 (68.3) |
| Annual household income, n (%) | ||||
| <$20,000 | 77 (24.3) | 104 (32.8) | ||
| $20,000–$39,999 | 155 (48.9) | 131 (41.3) | ||
| ≥$40,000 | 85 (26.8) | 82 (25.9) | ||
| Rhabdomyosarcoma | ||||
| Histologic subtypes, n (%) | ||||
| Embryonal | 215 (66.7) | 65 (50.0) | ||
| Alveolar | 66 (20.5) | 38 (29.2) | ||
| NOS | 41 (12.8) | 27 (20.8) | ||
| Potential Li-Fraumeni syndrome1 | ||||
| Diagnosed at <3 years old | ||||
| No | 65 (86.7) | 22 (88.0) | ||
| Yes | 10 (13.3) | 3 (12.0) | ||
| Diagnosed at ≥3 years old | ||||
| No | 215 (87.0) | 90 (85.7) | ||
| Yes | 32 (13.0) | 15 (14.3) | ||