Table 1

Domains, instruments and range of values

Disease featureInstrumentRange
Peripheral arthritis66 SJC; 68 TJC66/68
HAQ0–3
Skin diseasePASI0–72
DLQI0–30
EnthesitisLeeds enthesitis score*0–6
HAQ0–3
DactylitisDigit score0–20
HAQ0–3
BASDAI0–10
Spinal diseaseASQoL0–18

  • ↵* Bilateral achilles insertion, lateral humeral epicondyles, bilateral medial femoral condyles.

  • ASQoL, ankylosing spondylitis quality of life; BASDAI, Bath ankylosing spondylitis disease activity index; DLQI, dermatology life quality index; HAQ, health assessment questionnaire; PASI, psoriasis area severity index; SJC, swollen joint count; TJC, tender joint count.