Table 2.
Education and Income Distributionsa by Practice Setting and Mammography Referral
| Characteristic | Total | Mammography Referral | No Mammography Referral | p-Valueb |
|---|---|---|---|---|
| Office-based primary care practices | n=8,330 | n=733 | n=7,597 | |
| % with at least high school educationc | 83.3 (74.1, 89.6) | 85.8 (78.3, 90.8) | 83.2 (73.9, 89.4) | <0.001 |
| Median household incomec ($) | 41026 (33359, 54521) | 46521 (35759, 60672) | 40723 (33197, 54045) | <0.001 |
| Hospital outpatient departments | n=16,255 | n=1,031 | n=15,224 | |
| % with at least high school educationc | 78.5 (69.2, 85.8) | 78.0 (69.2, 84.8) | 78.5 (69.2, 85.8) | 0.464 |
| Median household incomec ($) | 35946 (28804, 45993) | 36590 (27964, 47044) | 35915 (28804, 45961) | 0.881 |
a
Distributions of the proportion of adults with at least a high school education and of the median household income in a patient’s zip code of residence are presented as medians (25th percentile, 75th percentile).
b
P-value from linear regression models with ranks of continuous income or education variable as the dependent variable and mammography referral as the independent variable.
c
Based on zip code level data from the 2000 Census.