Use of nailfold capillaroscopy for evaluation of disease activity in juvenile dermatomyositis: Results of a two-center retrospective study

Table 1 Modified disease activity score index

Parameters	Scored item	Options	Score
Muscle DAS (0-7)	Muscle strength	No muscle weakness (gMMT 68-70, MMT8 78-80)	0
		Minimal muscle weakness (gMMT 63-67, MMT8 72-77)	1
		Moderate muscle weakness (gMMT 56-62, MMT8 64-71)	2
		Severe muscle weakness (gMMT 0-55, MMT8 0-63)	3
	Functional status	No limitation on activity	0
		Activities limited at the extracurricular level	1
		Activities limited at the school/work level	2
		Activities limited at the self-care level	3
	Arthritis	Absent	0
		Present	1
Skin DAS (0-5)	Erythema	No erythema	0
		Local erythema (joints and face)	1
		Widespread erythema	2
	Heliotropic rash	Absent	0
		Present	1
	Gottron papules	Absent	0
		Present	1
	Vasculitis	Absent	0
		Present (nailfold abnormality)	1
Total score (0-12)

DAS: Disease activity score; gMMT: Global manual muscle test; MMT8: Manual muscle test 8.