Case | (n = 49) | Control | (n = 98) | ||
---|---|---|---|---|---|
n | (%) | n | (%) | ||
Age at diagnosis or match, years | Median (range) | 5.80 | (1.72—9.60) | 5.75 | (1.67—9.63) |
Sex | Female intact | 7 | (14.3%) | 14 | (14.3%) |
Female spayed | 16 | (32.7%) | 32 | (32.7%) | |
Male intact | 9 | (18.4%) | 18 | (18.4%) | |
Male neutered | 17 | (34.7%) | 34 | (34.7%) | |
Age at gonadectomy, yearsa | Median (range) | 1.06 | (0.22—4.64) | 0.93 | (0.21—4.71) |
Number of times moved | 0 | 40 | (81.6%) | 71 | (72.4%) |
1 | 7 | (14.2%) | 23 | (23.5%) | |
2 | 2 | ( 4.1%) | 2 | ( 2.0%) | |
3 | 0 | ( 0.0%) | 2 | ( 2.0%) | |
Years lived at longest residence | Median (range) | 5 | (1—8) | 6 | (2—9) |
Currently lives at longest residence? | Yes | 45 | (91.8%) | 88 | (89.9%) |
Urbanicity of longest residence | Rural | 13 | (26.5%) | 25 | (25.5%) |
Suburban | 30 | (61.2%) | 66 | (67.3%) | |
Urban | 6 | (12.2%) | 7 | ( 7.1%) | |
Geographic region of longest residenceb | Pacific | 3 | ( 6.1%) | 13 | (13.3%) |
Mountain | 6 | (12.2%) | 12 | (12.2%) | |
Midwest | 16 | (32.7%) | 24 | (24.5%) | |
Northeast | 10 | (20.4%) | 23 | (23.5%) | |
South | 14 | (28.6%) | 26 | (26.5%) |