Table I.
Demographics and laboratory characteristics of study population
| Characteristics | Patients with HS∗, n (%) | Patients without HS, n (%) | P |
|---|---|---|---|
| No. | 303 | 606 | |
| Age (y), mean ± SD | 43 ± 14 | 44 ± 19 | .52 |
| Patient-reported gender | .88 | ||
| Men | 99 (33) | 201 (303) | |
| Women | 204 (67) | 405 (67) | |
| Race/ethnicity | .82 | ||
| Non-Hispanic Asian | 20 (7) | 50 (8) | |
| Non-Hispanic Black | 116 (38) | 233 (38) | |
| Non-Hispanic White | 44 (14) | 81 (13) | |
| Hispanic | 103 (34) | 209 (34) | |
| Non-Hispanic Other† | 15 (5) | 28 (3) | |
| Unknown | 5 (2) | 5 (1) | |
| Insurance status | .15 | ||
| Healthy San Francisco‡ | 26 (8) | 76 (12) | |
| Medicare | 51 (17) | 68 (11) | |
| Medi-cal | 206 (68) | 421 (69) | |
| Commercial | 4 (1) | 7 (1) | |
| None | 16 (5) | 27 (4) | |
| Smoking status | <.01 | ||
| Never | 121 (40) | 353 (58) | |
| Current | 103 (34) | 112 (18) | |
| Former | 73 (24) | 111 (18) | |
| Unknown | 6 (2) | 27 (4) | |
| Mean (95% CI) | Mean (95% CI) | ||
| BMI§ kg/m | 36.7 (35.5-37.8) | 31.7 (31.0-32.4) | <.01 |
| Hemoglobin A1c % | 6.8 (6.6-7.1) | 6.1 (6.0-6.2) | <.01 |
| Highest total cholesterol mg/dL | 191 (185-196) | 195 (191-198) | .21 |
| Lowest high density lipoprotein mg/dL | 49 (47-50) | 54 (53-55) | <.01 |
| Highest low density lipoprotein mg/dL | 110 (106-114) | 113 (110-116) | .28 |
BMI, Body mass index; HS, hidradenitis suppurativa.
∗
Included on the problem list or discussed in a dermatology or primary care note.
†
Other racial group defined as self-identifies as American Indian, Alaska Native, Native Hawaiian, other Pacific Islanders, or 2 or more races.
‡
Healthy San Francisco enables uninsured residents of San Francisco who are not Medicare or Medicaid eligible to access medical services in San Francisco County.
§
BMI was determined based on the most recent recorded height and weight and calculated as weight in kilograms divided by height in meters squared.