Table 6.

Available information of metric properties from at least 3 studies for the most frequently applied instruments (in at least 15 clinical studies) for evaluation of pain, physical function, or patient’s global assessment.

Variable	Reliability	Sensitivity to Change	Feasibility	Validity
Questionnaires
AUSCAN	+	+	−^#	+
FIHOA	+	+	+^**	+
VAS pain		+		+
Performance- or assessor-based instruments
Grip strength	+^*	+		+
Pinch strength	+^*	+		+
Tenderness/pain on palpation	+^*	+		+^*

↵* Supporting evidence in only 2 studies.
↵** Supporting evidence in only 1 study.
↵# Not available in public domain. OA: osteoarthritis; AUSCAN: Australian/Canadian Hand OA Index; FIHOA: Functional Index for Hand OA; VAS: visual analog scale; +: established evidence.