Table 1 Overall characteristics of patients with psoriasis
From: Epidemiology of psoriasis in hard-to-treat body locations: data from the Danish skin cohort
With involvement of difficult-to-treat area | Without involvement of difficult-to-treat area | |||||||
|---|---|---|---|---|---|---|---|---|
Scalp | Face | Palms | Soles | Genitals | Nails | At least one difficult-to-treat area | ||
(n = 1726) | (n = 1200) | (n = 551) | (n = 628) | (n = 568) | (n = 982) | (n = 2602) | (n = 1414) | |
Age, mean (SD) | 56.3 (15.1) | 54.2 (14.9) | 59.7 (13.4) | 59.0 (12.9) | 53.9 (14.3) | 57.4 (13.4) | 57.8 (14.4) | 62.4 (13.9) |
Sex, n (%) | ||||||||
Women | 924 (53.5) | 620 (51.7) | 347 (63.0) | 412 (65.6) | 237 (41.7) | 477 (48.6) | 1423 (54.7) | 817 (57.8) |
Men | 802 (46.5) | 580 (48.3) | 204 (37.0) | 216 (34.4) | 331 (58.3) | 505 (51.4) | 1179 (45.3) | 597 (42.2) |
Smoking, n (%) | ||||||||
Daily smoker | 335 (19.4) | 271 (22.6) | 185 (33.6) | 207 (33.0) | 131 (23.1) | 229 (23.3) | 579 (22.2) | 274 (19.4) |
Occasional smoker | 78 (4.5) | 54 (4.5) | 26 (4.7) | 26 (4.1) | 19 (3.4) | 46 (4.7) | 116 (4.5) | 53 (3.8) |
Former smoker | 797 (46.2) | 524 (43.7) | 259 (47.0) | 310 (39.4) | 263 (46.3) | 479 (48.8) | 1221 (46.9) | 638 (45.2) |
Never smoker | 512 (29.7) | 350 (29.2) | 79 (14.3) | 82 (13.1) | 152 (26.8) | 225 (22.9) | 679 (26.1) | 433 (30.7) |
Unknown | 4 (0.2) | 1 (0.1) | 2 (0.4) | 3 (0.5) | 3 (0.5) | 3 (0.3) | 7 (0.3) | 13 (0.9) |
Units of alcohol per week, median (IQR) | 2 (0–7) | 2 (0–7) | 2 (0–7) | 2 (0–7) | 2 (0–7) | 2 (0–7) | 2 (0–7) | 3 (1–8) |
Body mass index, n | ||||||||
Underweight (BMI < 18.5) | 26 (1.5) | 18 (1.5) | 13 (2.4) | 12 (1.9) | 8 (1.4) | 14 (1.4) | 47 (1.8) | 30 (2.1) |
Normal weight (BMI 18.5–25) | 579 (33.6) | 397 (33.1) | 171 (31.0) | 202 (32.2) | 178 (31.3) | 282 (28.7) | 860 (33.1) | 543 (38.4) |
Overweight (BMI 25–30) | 609 (35.3) | 394 (32.8) | 190 (34.5) | 203 (32.3) | 192 (33.8) | 347 (35.3) | 911 (35.0) | 506 (35.8) |
Moderately obese (BMI 30–35) | 316 (18.3) | 226 (18.8) | 112 (20.3) | 133 (21.2) | 109 (19.2) | 213 (21.7) | 486 (18.7) | 203 (14.4) |
Severely obese (BMI 35–40) | 110 (6.4) | 93 (7.8) | 44 (8.0) | 50 (8.0) | 45 (7.9) | 78 (7.9) | 178 (6.8) | 69 (4.9) |
Very severely/morbidly obese (BMI > 40) | 7 (4.2) | 60 (5.0) | 18 (3.1) | 21 (3.3) | 30 (5.3) | 41 (4.2) | 99 (3.8) | 30 (2.1) |
Unknown | 14 (0.8) | 12 (1.0) | 4 (0.7) | 7 (1.1) | 6 (1.1) | 7 (0.7) | 21 (0.8) | 33 (2.3) |
Age at psoriasis onset, mean (SD) | 25.4 (16.9) | 23.9 (16.0) | 32.6 (17.8) | 33.2 (17.7) | 24.8 (15.9) | 26.4 (16.4) | 28.6 (17.7) | 32.6 (18.9) |
Current BSA, median (IQR) | 5 (2–12) | 5 (2–20) | 5 (2–10) | 4 (2–10) | 5 (2–20) | 5 (2–15) | 4 (1–10) | 1 (0–3) |
Flares in last 12 months, n (%) | ||||||||
None | 379 (22.0) | 196 (16.3) | 87 (15.8) | 116 (18.5) | 79 (13.9) | 171 (17.4) | 584 (22.4) | 434 (30.7) |
1 flare | 207 (12.0) | 145 (12.1) | 68 (12.3) | 82 (13.1) | 65 (11.4) | 126 (12.8) | 337 (13.0) | 86 (6.1) |
2–5 flares | 584 (33.8) | 445 (37.1) | 166 (30.1) | 194 (30.9) | 204 (35.9) | 343 (34.9) | 862 (33.1) | 158 (11.2) |
6–10 flares | 198 (11.5) | 147 (12.3) | 72 (13.1) | 79 (12.6) | 79 (13.9) | 119 (12.1) | 287 (11.0) | 35 (2.5) |
> 10 flares | 278 (16.1) | 213 (17.8) | 135 (24.5) | 131 (20.9) | 111 (19.5) | 181 (18.4) | 419 (15.8) | 46 (3.3) |
Unknown | 80 (4.6) | 54 (4.5) | 23 (4.2) | 26 (4.1) | 30 (5.3) | 42 (4.3) | 122 (4.7) | 655 (46.3) |