TABLE 1.
Clinical and demographic factors comparing ES to NES for PA
| Covariate | Total, N = 30,488 |
ES, n = 16,373 |
NES, n = 14,115 |
p Value |
|---|---|---|---|---|
| Age in yrs, mean ± SD | 53.0 ± 15.8 | 52.8 ± 15.8 | 53.3 ± 15.8 | 0.01 |
| Sex: no. female (%) | 14,602 (47.9) | 7,863 (48.0) | 6,739 (47.7) | 0.63 |
| Race, no. (%) | 13910 | <0.01* | ||
| Caucasian | 22,277 (74.1) | 12,157 (75.3) | 10,120 (72.8) | |
| African American | 5,772 (19.2) | 2,860 (17.7) | 2,912 (20.9) | |
| Other/unknown | 1,999 (6.7) | 1,121 (6.9) | 878 (6.3) | |
| Tumor size in mm, mean ± SD | 24.4 ± 12.8 | 23.8 ± 12.5 | 25.2 ± 13.0 | <0.01* |
| C/D index, no. (%) | 0.04 | |||
| 0 | 22,943 (75.3) | 12,245 (74.8) | 10,698 (75.8) | |
| ≥1 | 7,545 (24.7) | 4,128 (25.2) | 3,417 (24.4) | |
| Facility type, no. (%) | <0.01* | |||
| Nonacademic | 8,772 (36.6) | 3,986 (31.1) | 4,786 (43.0) | |
| Academic | 15,186 (63.4) | 8,832 (68.9) | 6,354 (57.0) | |
| Insurance status, no. (%) | <0.01* | |||
| Private | 17,335 (58.0) | 9,580 (59.3) | 7,755 (56.6) | |
| Government | 11,085 (37.1) | 5,952 (36.8) | 5,133 (37.4) | |
| Uninsured | 1,451 (4.9) | 626 (3.9) | 825 (6.0) | |
| Income, no. (%) | <0.01* | |||
| <$48,000 | 12,068 (39.7) | 6,207 (38.0) | 5,861 (41.6) | |
| ≥$48,000 | 18,367 (60.3) | 10,143 (62.0) | 8,224 (58.4) | |
| Zip code, residents w/o HSD, no. (%) | <0.01* | |||
| <13% | 14,030 (46.1) | 7,238 (44.3) | 6,792 (48.2) | |
| ≥13% | 16,418 (53.9) | 9,117 (55.7) | 7,301 (51.8) | |
| Urban/rural population | 0.82 | |||
| Metro counties | 25,271 (85.0) | 13,569 (84.9) | 11,702 (85.0) | |
| Urban or rural counties | 4,462 (15.0) | 2,404 (15.1) | 2,058 (15.0) | |
| Distance from patient to provider in miles, mean ± SD | 55.4 ± 145.3 | 61.6 ± 157.1 | 48.1 ± 129.9 | <0.01* |
HSD = high school diploma.
All percentages reflect denominators encompassing known or reported values, which do not always equate to the total cohort’s number. The p values indicate chi-square test for categorical or independent t-test for continuous variables in comparing ES to NES. Boldface type indicates statistical significance.
*
p values < 0.001.