TABLE 3.
Characteristics | RR | 95% CI * |
---|---|---|
Child's Characteristics | ||
Age at diagnosis (years) | ||
0-1 | 1.00 | Ref |
2-4 | 1.47 | 1.19, 1.84 |
5-9 | 2.07 | 1.66, 2.60 |
10-14 | 2.61 | 2.06, 3.31 |
Race/ethnicity | ||
White, non-Hispanic | 1.00 | Ref |
Hispanic | 0.93 | 0.80, 1.07 |
Black, non-Hispanic | 0.92 | 0.67, 1.26 |
Other | 1.03 | 0.82, 1.29 |
Parental Characteristics | ||
Maternal age at child's birth (years) | ||
< 20 | 1.00 | Ref |
20-24 | 0.77 | 0.64, 0.92 |
25-29 | 0.66 | 0.54, 0.80 |
30-34 | 0.55 | 0.44, 0.68 |
≥ 35 | 0.45 | 0.34, 0.60 |
Paternal education | ||
≤ High school | 1.00 | Ref |
Some college or other school | 0.84 | 0.71, 1.01 |
Bachelor's degree | 1.00 | 0.83, 1.20 |
Household income ($k/year) | ||
< 15 | 1.00 | Ref |
15-29 | 0.90 | 0.75, 1.08 |
30-44 | 0.85 | 0.70, 1.04 |
45-59 | 0.66 | 0.54, 0.82 |
60-74 | 0.65 | 0.51, 0.84 |
≥ 75 | 0.72 | 0.57, 0.92 |
Mother moved during the year before child's birth | ||
No | 1.00 | Ref |
Yes | 1.07 | 0.94, 1.22 |
Residential Area Characteristics | ||
Urban/rural at diagnosis residence | ||
Rural or town | 1.00 | Ref |
City | 1.26 | 1.07, 1.48 |
Large metro | 1.09 | 0.94, 1.28 |
Rate ratios (RR) and 95% confidence intervals (CI) were determined using multiple linear regression adjusting for all variables in the table and assuming a Poisson distribution for number of child's residences. A scaling factor was specified to adjust for the under-dispersion of the data. Variables included in the initial model included child's age at diagnosis, child's race/ethnicity, maternal age at child's birth, maternal education, paternal education, household income at diagnosis, mother moved during the year before child's birth, maternal smoking after child's birth, residential urban/rural status at diagnosis residence and residential SES at diagnosis residence.