Table 1

Scores for PsA (disease manifestations depicted in green colour are included, those depicted in red colour are not included in the respective score)

		Biomarker of inflammation	Articular inflammation			Global and pain assessments			Non-articular inflammatory musculoskeletal manifestions			Mixture of inflammatory activity and outcome		Non-musculoskeletal manifestations of PsA
		Laboratory (C-reactive protein/erythrocyte sedimentation rate)	Swollen joints	Tender joints	Joints VAS	Patient global VAS	Patient pain VAS	Physician global VAS	Enthesitis	Dactylitis	Axial	Function	Health-related quality of life	Skin
Multidimen-sional	CPDAI
	GRACE
	PASDAS
	MDA
Unidimen-sional	DAPSA

Calculations
Composite Psoriatic Disease Activity Index (CPDAI): Peripheral arthritis (TJC of 68 joints+SJC of 66 joints+HAQ), skin disease (PASI+DLQI), enthesitis (Leeds Enthesitis Index), dactylitis count, axial disease (BASDAI+ASQoL); each domain is scored 0–3 (for ‘no’, ‘mild’, ‘moderate’ and ‘severe’ involvement based on disease activity and impact measures) giving a total of 0–15, in which 0 represents no disease activity.
GRAppa Composite Exercise (GRACE) index: (1–arithmetic mean of eight variables)x10, the arithmetic mean is based on eight equally weighted variables TJC and SJC, HAQ, PtGA by VAS (1–10 cm), patient skin VAS (1–10 cm), patient joint VAS (1–10 cm), PASI (0–72), PsAQoL (0–20); the index provides a score of 0–10, where 0 is best and 10 is worst.
Psoriatic Arthritis Disease Activity Score (PASDAS): (((0.18√ PGA) + (0.159√ PtGA) – (0.253 x √ SF-36) + (0.101 x LN (SJC + 1)) + (0.048 x LN (TJC + 1)) + (0.23 x LN (LEI +1)) + (0.37 LN (tender dactylitis count + 1)) + (0.102 x LN (CRP + 1)) +2) x 1.5
Minimal Disease Activity (MDA): Fulfillment of five of seven criteria: TJC ≤1/68, SJC ≤1/66, PASI≤1 or BSA ≤3, enthesitis ≤1, PtGA (by VAS, 1–10 cm) ≤2 cm, pain VAS (1–10 cm) ≤1.5 cm, HAQ ≤0.5.
Disease Activity index for PSoriatic Arthritis (DAPSA): Sum of SJ66+TJ68+PtGA (in cm)+pain VAS (in cm)+CRP (mg/dL).