Table 1.
Characteristics of the Study Population (from 2003 CCSS Survey7) According to Individual and Population Factors
| All participants (n = 7899) | U.S. residents (n = 7286) | Canadian residents (n = 613) | |||||
|---|---|---|---|---|---|---|---|
| n | % or mean | n | % or mean | n | % or mean | p value (U.S. vs. Canadian residents) | |
| Individual factors | |||||||
| Sex | n.s. | ||||||
| Male | 3928 | 49.7% | 3613 | 49.6% | 315 | 51.4% | |
| Female | 3971 | 50.3% | 3673 | 50.4% | 298 | 48.6% | |
| Race/ethnicity | <0.01 | ||||||
| White, non-Hispanic | 6838 | 86.6% | 6294 | 86.4% | 544 | 88.7% | |
| Hispanic | 124 | 1.6% | 124 | 1.7% | 0 | 0% | |
| Black | 208 | 2.6% | 203 | 2.8% | 5 | 0.8% | |
| Other | 729 | 9.2% | 665 | 9.1% | 64 | 10.4% | |
| Age, years | |||||||
| At diagnosis, mean ± SD | 7899 | 8.2 ± 5.9 | 7286 | 8.3 ± 5.9 | 613 | 7.1 ± 5.0 | n.s. |
| At survey, mean ± SD | 7899 | 31.7 ± 7.6 | 7286 | 31.9 ± 7.7 | 613 | 30.2 ± 6.7 | |
| Annual household income | < 0.01 | ||||||
| <$40,000 | 2456 | 31.1% | 2307 | 31.7% | 149 | 24.3% | |
| $40,000–$79,000 | 2539 | 32.1% | 2343 | 32.2% | 196 | 32.0% | |
| ≥$80,000 | 1818 | 23.0% | 1656 | 22.7% | 162 | 26.4% | |
| Unknown | 1086 | 13.7% | 980 | 13.5% | 106 | 17.3% | |
| Education level | < 0.01 | ||||||
| Less than high school | 341 | 4.3% | 285 | 3.9% | 56 | 9.1% | |
| High school graduate | 4104 | 52.0% | 3848 | 52.8% | 256 | 41.8% | |
| College graduate | 3454 | 43.7% | 3153 | 43.3% | 301 | 49.1% | |
| Employment status | <0.05 | ||||||
| Unemployed | 935 | 11.8% | 844 | 11.6% | 91 | 14.8% | |
| Employed, student, caring for home | 6964 | 88.2% | 6442 | 88.4% | 522 | 85.2% | |
| Health insurance status | < 0.01 | ||||||
| Yes | 6492 | 82.2% | 6436 | 88.3% | 56 | 9.1% | |
| No | 880 | 11.1% | 850 | 11.7% | 30 | 4.9% | |
| Canadian health insurance | 527 | 6.7% | 0 | 0.0% | 527 | 86.0% | |
| Poor emotional health | n.s. | ||||||
| No | 7250 | 91.8% | 6685 | 91.8% | 565 | 92.2% | |
| Yes | 649 | 8.2% | 601 | 8.2% | 48 | 7.8% | |
| Cancer-related anxiety | n.s. | ||||||
| None, a small amount | 7191 | 91.0% | 6635 | 91.1% | 556 | 90.7% | |
| Moderate, a lot, extreme | 708 | 9.0% | 651 | 8.9% | 57 | 9.3% | |
| Cancer-related pain | n.s. | ||||||
| None, a small amount | 7255 | 91.8% | 6682 | 91.7% | 573 | 93.5% | |
| Moderate, a lot, extreme | 644 | 8.2% | 604 | 8.3% | 40 | 6.5% | |
| Poor physical health | n.s. | ||||||
| No | 6024 | 76.3% | 5559 | 76.3% | 465 | 75.9% | |
| Yes | 1875 | 23.7% | 1727 | 23.7% | 148 | 24.1% | |
| Chronic medical conditions | n.s. | ||||||
| Grade 0, 1, 2 | 5983 | 75.7% | 5506 | 75.6% | 477 | 77.8% | |
| Grade 3, 4 | 1916 | 24.3% | 1780 | 24.4% | 136 | 22.2% | |
| Population factors | |||||||
| Population density per square mile | 7899 | 1620 ± 5167 (0.00003–66.94) | 7286 | 1380 ± 4988 (0.0007–66.94) | 613 | 4480 ± 6289 (0.00003–59.19) | <0.01 |
| Population size (number) | 7286 | 784,000 ± 153,000 (2000–905,000) | |||||
| Median income of living areaa | 7899 | $47,600 ± $17,500 | 7286 | $48,400 ± $17,700 ($9400–$185,000) | 613 | $38,500 ± $11,200 | <0.01 |
| Number of physicians/surgeons (1000/county) | 7286 | 2.27 ± 4.3 (0–23.45) | |||||
| Number of CCSS centers within 100 miles | 7286 | 1.2 ± 1.1 (0–4) | |||||
2001 Canadian Census was the source for the population factors at the level of the FSA.
U.S. population factors were obtained from the 2007 Area Health Resource File, U.S. Department of Health and Human Services Health Resources and Services Administration.
a
Median income according to 2000 U.S. Census data per zip code.
CCSS, Childhood Cancer Survivor Study; FSA, Forward Sortation Area; n.s., nonsignificant.