Table 3.

Metric properties of instruments measuring pain, physical function, or patient’s global assessment — reliability^*.

Variables	Studies	Relevant Results
Questionnaires
AUSCAN	Bellamy, et al²⁵	ICC (Likert/VAS): Pain: 0.70/0.84 Function: 0.86/0.90
	Dziedzic, et al²⁷	ICC: Pain: 0.88 Function: 0.87
	Haugen, et al³⁰	ICC: Pain: 0.93 Function: 0.94 Total: 0.96
	Moe, et al³⁴	ICC, SDD: Pain: 0.80, 1.06 Function: 0.92, 0.80 Total: 0.87, 0.76
Cochin scale	Poiraudeau, et al³⁶	Interrater ICC: 0.96
Cochin scale	Poole, et al³⁷	ICC: 0.94
FIHOA	Dreiser, et al¹³	ICC: 0.95, mean difference 0.17 ± 1.64
	Haugen, et al³⁰	ICC: 0.88
	Moe, et al³⁴	ICC: 0.94, SDD 5.55
	Poole, et al³⁷	ICC: 0.74
	Wittoek, et al⁴³	ICC: 0.96
Performance- or assessor-based instruments
Grip strength	Myers, et al³⁵	Inter-/intraobserver ICC: range per hand 0.91–0.94/0.90–0.92
Grip strength	Ziv, et al⁴⁴	SDD (right, left): 2.48, 1.94
Pinch strength	Myers, et al³⁵	Inter-/intraobserver ICC: range per test/hand 0.87–0.94/0.89–0.96
Pinch strength	Ziv, et al⁴⁴	SDD (right, left): range per test 0.40–0.54, 0.42–0.63
Tenderness/pain on palpation	Bijsterbosch, et al¹⁹	Inter-/intrarater ICC of Doyle index: 0.88/range per rater 0.94–0.97
Tenderness/pain on palpation	Myers, et al³⁵	Inter-/intraobserver ϰ (% agreement): 0.64/0.69 (95/96)

↵* Only instruments assessed in ≥ 2 studies were included in this table. OA: osteoarthritis; AUSCAN: Australian/Canadian Hand OA Index; FIHOA: Functional Index for Hand OA; ICC: intraclass correlation coefficient; VAS: visual analog scale; SDD: smallest detectable difference.