Table 1.
Demographics of 2006-2010 MarketScan sample population.
| Characteristic | NF1 group (n=8579) | Non-NF1 group n=85790) |
|---|---|---|
| Age category years (No., %) | ||
| 0-9 | 2,668 (31.1) | 26,680 (31.1) |
| 10-19 | 1,816 (21.2) | 18,160 (21.2) |
| 20-29 | 762 (8.9) | 7,620 (8.9) |
| 30-39 | 889 (10.4) | 8,890 (10.4) |
| 40-49 | 1,105 (12.9) | 11,050 (12.9) |
| 50-59 | 1,113 (13.0) | 11,130 (13.0) |
| 60-69 | 226 (2.6) | 2,260 (2.6) |
| Enrollment, months | ||
| Mean (SD) | 35.3 (17.1) | 34.6 (17.8) |
| Median | 36 | 36 |
| Number of visits | ||
| Mean (SD) | 17.6 (17.2) | 8.8 (11.7) |
| Median | 13 | 5 |
| Sex (No., %) | ||
| Female | 4,486 (52.3) | 43,365 (50.6) |
| Male | 4,093 (47.7) | 42,425 (49.5) |
| HMO membership (No., %) | ||
| Yes | 1,507 (17.6) | 15,122 (17.6) |
| No | 7,072 (82.4) | 70,668 (82.4) |
| Region (No., %)a | ||
| New England | 468 (5.5) | 3,473 (4.1) |
| Middle Atlantic | 903 (10.5) | 7,840 (9.1) |
| East North Central | 1,677 (19.6) | 16,356 (19.1) |
| West North Central | 593 (6.9) | 5,958 (6.9) |
| South Atlantic | 1,684 (19.6) | 17,328 (20.2) |
| East South Central | 365 (4.3) | 4,622 (5.4) |
| West South Central | 1,284 (15.0) | 14,352 (16.7) |
| Mountain | 419 (4.9) | 4,470 (5.2) |
| Pacific | 838 (9.8) | 10,277 (12.0) |
| Missing | 342 (4.0) | 1,051 (1.2) |
| Other | 6 (0.1) | 63 (0.1) |
NF1, neurofibromatosis type 1; SD, standard deviation; HMO, Health Maintenance Organization
New England (Maine, New Hampshire, Vermont, Massachusetts, and Connecticut); Middle Atlantic (New York, New Jersey, and Pennsylvania); East North Central (Wisconsin, Michigan, Illinois, Indiana, and Ohio); West North Central (North Dakota, South Dakota, Minnesota, Nebraska, Iowa, Kansas, and Missouri), South Atlantic (Maryland, Delaware, District of Columbia, West Virginia, Virginia, North Carolina, South Carolina, Georgia, and Florida); East South Central (Kentucky, Tennessee, Mississippi, Alabama); West South Central (Oklahoma, Arkansas, Texas, and Louisiana); Mountain (Montana, Idaho, Wyoming, Nevada, Utah, Colorado, Arizona, and New Mexico); Pacific (Washington, Oregon, California, Alaska, and Hawaii); Other (includes military regions, Puerto Rico, and Guam)