| Total (N = 220) |
---|---|
Demographic, % (n) | |
 Age, mean ± SD | 47.2 ± 14.1 |
 Gender | |
  Female | 32.7% (72) |
  Male | 67.3% (148) |
 Smoking | |
  Non-smoker | 79.0% (173) |
  Smoker | 9.6% (21) |
  Ex-smoker | 11.4% (25) |
 Drinking | |
  Non-drinker | 31.5% (69) |
  Ex-drinker | 10.5% (23) |
  Social drinker | 53.0% (116) |
  Current drinker | 4.6% (10) |
 Education level | |
  Nil | 0.5% (1) |
  Primary | 10.5% (23) |
  Secondary | 47.5% (104) |
  Tertiary or above | 41.6% (91) |
 Family income level | |
  < US$1282 | 18.9% (41) |
  US$1282–3846 | 42.9% (93) |
  US$3846–7692 | 20.7% (45) |
  > US$7692 | 17.5% (38) |
 Occupation | |
  Student | 5.5% (12) |
  Housewife | 7.3% (16) |
  Work | 70.0% (154) |
  Unemployed | 4.1% (9) |
  Retired | 13.2% (29) |
Clinical, % (n) | |
 Peripheral arthritis | |
  No | 60.5% (133) |
  Yes | 39.5% (87) |
 Dactylitis | |
  No | 96.3% (211) |
  Yes | 3.7% (8) |
 Uveitis | |
  No | 63.9% (140) |
  Yes | 36.1% (79) |
 Psoriasis | |
  No | 85.0% (187) |
  Yes | 15.0% (33) |
 Backpain duration | 16.6 ± 12.1 |
 Psoriasis duration | 16.1 ± 11.9 |
 Any back pain | |
  No | 9.2% (20) |
  Yes | 90.8% (197) |
 Current back pain | |
  No | 23.5% (51) |
  Yes | 76.5% (166) |
 Spinal pain in the past week | 3.95 ± 2.69 |
  No | 10.5% (23) |
  Yes | 89.5% (197) |
 Tender joints | 0.32 ± 1.07 |
 Swollen joints | 0.16 ± 0.94 |
 Dactylitis score | 0.01 ± 0.10 |
 Enthesitis score | 0.20 ± 0.69 |
 CRP | 0.73 ± 1.45 |
 ESR | 24.2 ± 19.2 |