TABLE I.
Demographic Characteristics of Childhood Rhabdomyosarcoma Cases and Controls
| Characteristic | Controls N=322 | Cases N=322 | OR | 95% CI |
|---|---|---|---|---|
| Sex of the child, n (%) | ||||
| Male | 215 (66.8) | 215 (66.8) | 1.00 | Ref. |
| Female | 1.007 (33.2) | 107 (33.2) | 1.00 | 0.72-1.39 |
| Race of child, n (%) | ||||
| White | 291 (90.4) | 287 (89.1) | 1.00 | Ref. |
| Black | 21 (6.5) | 20 (6.2) | 0.97 | 0.51-1.82 |
| Other | 10 (3.1) | 15 (4.7) | 1.52 | 0.67-3.44 |
| Ethnicity of child, n (%) | ||||
| Non-Hispanic | 307 (95.9) | 303 (94.7) | 1.00 | Ref |
| Hispanic | 13 (4.1) | 17 (5.3) | 1.32 | 0.63-2.78 |
| Age in yearsa, mean (SD) | 7.5 (5.4) | 7.6 (5.3) | NEb | NEb |
| Maternal education, n (%) | ||||
| <High School | 39 (11.8) | 45 (14.1) | 1.10 | 0.67-1.80 |
| High School | 126 (39.4) | 132 (41.4) | 1.00 | Ref. |
| >High School | 155 (48.4) | 142 (44.5) | 0.87 | 0.63-1.22 |
| Paternal education, n (%) | ||||
| <High School | 37 (11.8) | 54 (17.1) | 1.45 | 0.88-2.37 |
| High School | 111 (35.5) | 112 (35.3) | 1.00 | Ref. |
| >High School | 165 (52.7) | 151 (47.6) | 0.91 | 0.64-1.28 |
| Total Annual income, n (%) | ||||
| <$20,000 | 77 (24.3) | 104 (32.8) | 1.61 | 1.11-2.35 |
| $20,000-$39,999 | 155 (48.9) | 131 (41.3) | 1.00 | Ref. |
| ≥$40,000 | 85 (26.8) | 82 (25.9) | 0.68 | 0.78-1.67 |
| Histologic subtypes, n (%) | ||||
| Embryonal | 215 (66.7) | N/A | ||
| Alveolar | 66 (20.5) | N/A | ||
| NOS | 44 (12.8) | N/A |
Abbreviations: OR=odds ratio; CI=confidence interval; SD=standard deviation
a
Age at diagnosis/enrollment
b
NE – not estimated
c NOS – not otherwise specified