Table 1.

Outcomes and outcome measures evaluated in studies of multispecialty working in spondyloarthritis.

Outcomes		Outcome measures
Diagnosis	Early diagnosis	Assessment of SpondyloArthritis Society criteria; New York criteria The Classification Criteria for Psoriatic Arthritis; Moll and Wright criteria Rheumatologist’s/dermatologist’s (clinical) judgement Not defined (‘standard diagnostic criteria for inflammatory bowel diseases and rheumatic diseases’)
	Diagnosis delay	The total lag time from joint symptom onset to the first rheumatological assessment Diagnostic delay: the time interval between the onset of symptoms and the correct diagnosis being made Physician-related diagnostic delay: the time interval between the initial visit to a physician and the time of diagnosis
	Reclassification of diagnosis	Number of patients, n (%)
Disease related	Disease activity	Musculoskeletal: • The Bath Ankylosing Spondylitis Disease Activity Index • The Ankylosing Spondylitis Disease Activity Score – C-reactive protein • Disease Activity in Psoriatic Arthritis Gastroenterology: • Crohn’s disease activity index • the partial Mayo Psoriasis: • Psoriasis Area Severity Index
	Physical function	Bath Ankylosing Spondylitis Metrology Index Bath Ankylosing Spondylitis Functional Index Bath Ankylosing Spondylitis Patient Global Score Health Assessment Questionnaire
	Comorbidities	Prevalence of diabetes, hypertension, hyperlipidaemia and current/past smoking status
	Complications during follow up/adverse events	Prevalence of infection and adverse medication effects (i.e. elevated liver function test, headache)
Treatment	Therapeutic adjustment	Number of patients, n (%) having had their treatment changed
Patient reported outcomes	Quality of life	Inflammatory Bowel Disease Questionnaire Short Form (SF36) Dermatology Life Quality Index Psoriatic Arthritis Impact of Disease
	Global wellness	• Health Assessment Questionnaire • Short Form (SF36) • Patient Global Assessment
	Patient global assessment	Patient Global Assessment
	Activity limitations and participation restrictions	The Canadian Occupational Performance Measure
	Patient satisfaction	Satisfaction questionnaire (developed by the multidisciplinary team)
Feasibility/costs	Health service utilisation	Questionnaire developed by the Stanford University School of Medicine with four indicators (i.e. outpatient visits, emergency visits, hospitalisations and hospitalisation days)