Table 1.
Demographic and clinical characteristics of survey participants
| Demographic parameter | Baseline (N = 523) | |
|---|---|---|
| Agea | Mean (SD) | 47.5 (12.0) |
| Min–max | 18–82 | |
| Median (Q1, Q3) | 49 (38, 56) | |
| 95% CI | (46.5, 48.6) | |
| Sex | Female | 332 (63.5%) |
| Male | 191 (36.5%) | |
| Race | White | 451 (86.2%) |
| Multi-racial (no primary race) | 31 (5.9%) | |
| Asian | 15 (2.9%) | |
| Black or African American | 14 (2.7%) | |
| American Indian or Alaska Native | 2 (0.4%) | |
| Native Hawaiian or other Pacific Islander | 1 (0.2%) | |
| Other | 9 (1.7%) | |
| Employment status | Employed, full-time | 389 (74.4%) |
| Retired | 36 (6.9%) | |
| Employed, part-time | 34 (6.5%) | |
| Unemployed | 24 (4.6%) | |
| Homemaker | 17 (3.3%) | |
| Disabled | 15 (2.9%) | |
| Student | 3 (0.6%) | |
| Other | 5 (1.0%) | |
| Psoriasis duration (months) | Mean (SD) | 197.1 (167.4) |
| Min–max | 0–720 | |
| Median (Q1, Q3) | 144 (54, 301) | |
| 95% CI | (182.7, 211.5) | |
| PREPI/BSA | BSA 0% | 17 (3.3%) |
| BSA 1% to 2% | 163 (31.2%) | |
| BSA 3% to 4% | 90 (17.2%) | |
| BSA 5% to 10% | 133 (25.4%) | |
| BSA 11% to 20% | 71 (13.6%) | |
| BSA > 20% | 49 (9.4%) | |
| Psoriasis location | Upper extremities | 372 (71.1%) |
| Lower extremities | 369 (70.6%) | |
| Head and neck | 357 (68.3%) | |
| Trunk | 254 (48.6%) | |
| Nails (fingernails or toenails) | 140 (26.8%) | |
| Biologics used in the past 2 years | Yes | 254 (48.6%) |
| No | 269 (51.4%) | |
| Comorbid psoriatic arthritis | Yes | 287 (54.9%) |
| No | 236 (45.1%) | |
BSA body surface area, CI confidence interval, PREPI Patient Report of Extent of Psoriasis Involvement, Q quartile, SD standard deviation
aParticipants were at least 18 years of age or the age of majority (19 or 21 years) in Nebraska, Alabama, and Mississippi