Table 2.
Demographic characteristics of patients with sampled International Classification of Diseases-9 Clinical Modification codes, by site (n=259)
| Characteristics | Site 1 (n=123a) | Site 2 (n=126b) | p-value |
|---|---|---|---|
| Age in years, | 0.008c | ||
| Mean (std dev) | 46.4 (20.4) | 40.3 (14.4) | |
| Median (25th, 75th percentile) | 46.0 (24.0, 64.0) | 37.0 (28.5, 51.0) | |
| Gender, n (%) | 0.002d | ||
| Male | 51 (41.5) | 77 (61.1) | |
| Female | 72 (58.5) | 49 (38.9) | |
| Race/ethnicity, n (%) | <0.001d | ||
| White | 89 (72.4) | 71 (56.4) | |
| Hispanic | 8 (6.5) | 37 (29.4) | |
| African American | 7 (5.7) | 16 (12.7) | |
| Other and Unknown | 19 (15.4) | 2 (1.6) | |
| Insurance typee, n (%) | <0.001d | ||
| Commercial | 74 (60.2) | 8 (6.4) | |
| Medicaid | 9 (7.3) | 59 (46.8) | |
| Medicare | 36 (29.3) | 23 (18.3) | |
| Indigent Plan Care | 0 | 6 (4.8) | |
| Others | 4 (3.3) | 19 (15.1) | |
| Unknown | 0 | 11 (8.7) | |
a
7 patients had more than 1 event during the study period (total events=131)
b
2 patients had more than 1 event during the study period (total events=128)
c
Compared the difference in means using the t-test
d
Compared using the chi-square test
e
Patients with more than 1 event had the same insurance at all visits