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Table 1 Baseline characteristics of all psoriasis arthritis patients and for men and women separately. The number of patients in the analyses is 137 if not otherwise indicated

From: Psoriatic arthritis: exploring the occurrence of sleep disturbances, fatigue, and depression and their correlates

  Total (n = 137) Men (n = 68) 49.6% Women (n = 69) 50.4% p value
Demographics
 Age, years, mean (SD) 52.3 (10.3) 51.8 (10.4) 52.8 (10.4) 0.56
 BMI, kg/m2 (n = 135), mean (SD) 28.4 (4.3) 28.5 (3.9) 28.2 (4.8) 0.67
 Currently smoking, number (%) 24 (17.5%) 9 (13.2%) 15 (21.7%) 0.19
 Living together (n = 134), number (%) 105 (76.6%) 55 (82.1%) 50 (74.6%) 0.29
 Currently employed/working* (n = 135), number (%) 74 (54.8%) 43 (64.2%) 31 (45.6%) 0.030
Musculoskeletal disease measures
 PsA disease duration, years, mean (SD) 8.8 (6.8) 8.6 (7.3) 9.0 (6.3) 0.70
 CRP, mg/L, mean (SD) 5.0 (8.3) 6.6 (10.7) 3.4 (4.4) 0.024
 TJC68, mean (SD) 10.1 (11.1) 7.8 (10.1) 12.3 (11.6) 0.023
 SJC66, mean (SD) 0.6 (1.0) 0.6 (1.2) 0.6 (0.9) 0.91
 MASES, range 0–13, mean (SD) 3.0 (3.2) 1.9 (2.5) 4.0 (3.4) < 0.001
PROs
 Pain, VAS 0–100 mm, mean (SD) 34.8 (23.3) 30.2 (21.9) 39.4 (24.0) 0.021
 Fatigue, NRS 0–10, mean (SD) 4.2 (2.6) 3.6 (2.5) 4.8 (2.6) 0.009
 Sleep disturbance, NRS 0–10, mean (SD) 3.5 (2.9) 2.8 (2.7) 4.1 (3.0) 0.010
 Depression, range 1–3, mean (SD) 1.4 (0.4) 1.3 (0.5) 1.5 (0.6) 0.069
 MHAQ, range 0–3, mean (SD) 0.44 (0.40) 0.36 (0.33) 0.51 (0.44) 0.025
 Exercise ≥ 1 time per week, number (%) 62 (45.3%) 30 (44.1%) 32 (46.4%) 0.79
Comorbidity
 Comorbidities (n = 136) (range 0–8) mean (SD) 0.72 (0.93) 0.51 (0.76) 0.91 (1.04) 0.012
Skin
 PASI, range 0–72 (n = 136), mean (SD) 2.6 (3.7) 3.3 (4.2) 1.9 (3.0) 0.030
 Skin itching, number (%) (n = 121)†† 28 (23.1%) 16 (26.2%) 12 (20.0%) 0.417
Treatment
 Current bDMARD, number (%) (n = 136) 44 (32.4%) 27 (39.7%) 17 (25.0%) 0.067
 Current csDMARD, number (%) 80 (58.4%) 43 (63.2%) 37 (53.6%) 0.25
  1. Continuous variables are expressed as mean (standard variation); categorical variables are expressed as numbers (proportions). In the group comparisons, the independent sample t test was used for continuous variables and the chi-square test for categorical variables
  2. BMI body mass index, PsA psoriatic arthritis, ESR erythrocyte sedimentation rate, CRP C-reactive protein, TJC tender joint count, SJC swollen joint count, DAPSA Disease Activity index for Psoriatic Arthritis, PASDAS Psoriatic Arthritis Disease Activity Score, MASES Maastricht Ankylosing Spondylitis Enthesitis Score, IGA Investigator Global Assessment, VAS visual analogue scale, PROs patient-reported outcome measures, PGA patient global assessment, NRS numeric rating scale, MHAQ Modified Health Assessment Questionnaire, PASI Psoriasis Area Severity Index, DLQI Dermatology Life Quality Index, bDMARDs biologic disease-modifying anti-rheumatic drugs, csDMARDs conventional synthetic DMARDs
  3. *Not employed/working: part time/full time sick leave, disabled pensioner or pensioner
  4. The sleep question is phrased as follows: “Select the number that best describes the sleep difficulties (i.e. resting at night) you felt due to your arthritis during the last week (from 0 (no difficulty) to 10 (extreme difficulty))”
  5. ††Skin itching: no itching (25 patients) and little itching (68 patients) were grouped as no itching and a lot itching (22 patients) and very much itching (6 patients) as itching