Table 1. Demographic Characteristics of the Study Patientsa.
| Characteristic | Race/Ethnicity | |||||
|---|---|---|---|---|---|---|
| Non-Hispanic White (n = 20 310) | Non-Hispanic Black (n = 2388) | Non-Hispanic Asian (n = 867) | Hispanic (n = 1646) | Other (n = 4717) | Overall (N = 29 928) | |
| Age at diagnosis, median (IQR), y | 20.2 (15.6-35.6) | 20.8 (14.9-37.6) | 22.0 (15.3-34.9) | 17.8 (14.8-31.0) | 19.3 (15.3-32.5) | 20.2 (15.4-34.9) |
| Female | 13 030 (64.2) | 1665 (69.7) | 576 (66.4) | 1006 (61.1) | 2850 (60.4) | 19 127 (63.9) |
| Census region | ||||||
| Midwest | 12 548 (61.8) | 1376 (57.6) | 327 (37.7) | 548 (33.3) | 1881 (39.9) | 16 680 (55.7) |
| Northeast | 2912 (14.3) | 172 (7.2) | 126 (14.5) | 275 (16.7) | 1041 (22.1) | 4526 (15.1) |
| South | 3418 (16.8) | 730 (30.6) | 142 (16.4) | 555 (33.7) | 887 (18.8) | 5732 (19.2) |
| West | 1432 (7.1) | 110 (4.6) | 272 (31.4) | 268 (16.3) | 908 (19.3) | 2990 (10.0) |
| Insurance type | ||||||
| Commercial | 10 791 (53.1) | 1020 (42.7) | 361 (41.6) | 571 (34.7) | 1749 (37.1) | 14 492 (48.4) |
| Medicaid | 1023 (5.0) | 434 (18.2) | 39 (4.5) | 234 (14.2) | 281 (6.0) | 2011 (6.7) |
| Medicare | 562 (2.8) | 82 (3.4) | 8 (0.9) | 13 (0.8) | 65 (1.4) | 730 (2.4) |
| Uninsured | 496 (2.4) | 41 (1.7) | 4 (0.5) | 46 (2.8) | 100 (2.1) | 687 (2.3) |
| Mixed: insured | 4058 (20.0) | 429 (18.0) | 196 (22.6) | 346 (21.0) | 722 (15.3) | 5751 (19.2) |
| Mixed: uninsured | 295 (1.5) | 40 (1.7) | 11 (1.3) | 87 (5.3) | 51 (1.1) | 484 (1.6) |
| Unknown | 2601 (12.8) | 315 (13.2) | 225 (26.0) | 324 (19.7) | 1684 (35.7) | 5149 (17.2) |
| Other | 484 (2.4) | 27 (1.1) | 23 (2.7) | 25 (1.5) | 65 (1.4) | 624 (2.1) |
| Mean household income per $1000, median (IQR), $ | 42.0 (38.7-49.4) | 39.6 (36.3-46.9) | 48.6 (41.6-53.7) | 42.4 (38.7-49.2) | 44.4 (39.0-51.9) | 42.2 (38.8-49.5) |
| College education, median (IQR), % | 25 (20-29) | 25 (21-29) | 29 (24-37) | 24 (21-28) | 26 (20-26) | 25 (20-29) |
| PCOS | 169 (0.8) | 18 (0.8) | 6 (0.7) | 14 (0.9) | 37 (0.8) | 244 (0.8) |
| Seen by a dermatologist at least once | 7983 (39.3) | 932 (39.0) | 360 (41.5) | 499 (30.3) | 1954 (41.4) | 11 728 (39.2) |
| Acne visits, median (IQR), No. | 1 (1-2) | 1 (1-2) | 1 (1-2) | 1 (1-2) | 1 (1-2) | 1 (1-2) |
| Prescriptions, median (IQR), No. | 1 (0-3) | 1 (0-2) | 1 (0-2) | 1 (0-2) | 1 (0-2) | 1 (0-2) |
Abbreviations: IQR, interquartile range; PCOS, polycystic ovary syndrome.
a
Data are presented as number (percentage) of patients unless otherwise indicated.