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Table 1 Characteristics of 97 patients participated in both surveys

From: Predictors of functional deterioration in Chinese patients with Psoriatic arthritis: a longitudinal study

  No. (%) of patients Mean ± SD
  Baseline Follow up
Follow up time, years - 6.2 ± 0.7
Male (%) 53 (54.6) -
Age, years 48.2 ± 11.0 -
Ethnicity, Chinese 97 (100)  
Duration of PsA years 8.1 ± 6.9 -
Education, years 8.7 ± 3.6 -
BMI, kg/m2 25.6 ± 4.4 -
ESR, mm/hour 33.0 ± 28.6 -
Tender joint count, 0-68 4.16 ± 5.10 -
Swollen joint count, 0-66 1.91 ± 2.69 -
Damage joint count, 0-68 2.97 ± 4.40 -
Dactylitis count, 0-20 0.58 ± 4.96 -
PASI, 0-72 5.62 ± 7.57 -
Pain, 0-10 4.96 ± 2.52 -
PGA, 0-10 4.52 ± 2.46 4.11 ± 2.64
PhGA, 0-10 2.12 ± 1.92 -
XR Sacroiliitis (%) 34 (35.1) -
XR hand erosion (%) 58 (59.8) -
HAQ 0.64 ± 0.59 0.43 ± 0.57
SF36   
PCS (SD) 39.19 ± 8.65 36.05 ± 12.23
MCS (SD) 43.50 ± 11.47 45.42 ± 12.52
Ever use DMARD (%) 47 (48.5) 78 (80.4)
Ever use biologics (%) 0 22 (22.7)
  1. BMI = body mass index. ESR = erythrocytes sedimentation rate. MASES = Mastraight ankylosing spondylitis Enthese Score. PASI = Psoriasis area-and-severity index. PGA = patients’ global perception of joint and skin disease activity. PhGA = physician’s global assessments of disease activity. XR = plain radiography. HAQ = Health Assessment Questionnaire. SF36 = Medical Outcome Short Form 36. PCS = Hong Kong norm based Physical component Summary of SF36. MCS = Hong Kong norm based Mental component Summary of SF36. DMARDs = Disease modifying anti-rheumatic drugs.