Table 3. Mean Annualized Prevalence of Granuloma Annulare in the United States (January 1, 2017, to December 31, 2018).
Population | Granuloma annulare cases, No. | Prevalence per 100 000 (95% CI) | Prevalence, % |
---|---|---|---|
All granuloma annulare cases | 8930 | 58.3 (57.1-59.5) | 0.06 |
Sex | |||
Female | 6774 | 86.2 (84.1-88.3) | 0.09 |
Male | 2157 | 28.9 (27.7-30.1) | 0.03 |
Age, y | |||
≤19 | 468 | 19.1 (17.4-20.9) | 0.02 |
20-29 | 335 | 19.9 (17.7-22.0) | 0.02 |
30-39 | 647 | 33.4 (30.9-36.0) | 0.03 |
40-49 | 953 | 51.7 (48.4-55.0) | 0.05 |
50-59 | 1771 | 91.5 (87.3-95.8) | 0.09 |
≥60 | 4757 | 86.8 (84.3-89.3) | 0.09 |
Race/ethnicity | |||
White | 6370 | 72.7 (70.9-74.4) | 0.07 |
Black | 388 | 30.7 (27.6-33.7) | 0.03 |
Hispanic | 547 | 33.6 (30.8-36.4) | 0.03 |
Asian | 126 | 20.5 (16.9-24.1) | 0.02 |
Other or unknown | 1500 | 49.2 (46.7-51.7) | 0.05 |
Income, $ | |||
<49 000 | 1341 | 47.5 (44.9-50.0) | 0.05 |
50 000-74 000 | 1165 | 61.3 (57.8-64.8) | 0.06 |
75 000-99 000 | 1169 | 70.8 (66.8-74.9) | 0.07 |
≥100 000 | 3034 | 75.3 (72.6-78.0) | 0.08 |
Unknown | 2221 | 45.1 (43.3-47.0) | 0.05 |
Educational level | |||
Less than 12th grade | 16 | 21.1 (10.6-31.6) | 0.02 |
High school diploma | 1483 | 45.6 (43.3-47.9) | 0.05 |
Less than bachelor degree | 4346 | 62.7 (60.8-64.5) | 0.06 |
Bachelor degree plus | 1939 | 74.4 (71.1-77.7) | 0.07 |
Unknown | 1148 | 46.7 (44.0-49.4) | 0.05 |