. 2020 Feb 10;21:40–48. doi: 10.1016/j.jor.2020.01.047

Table 4.

Summary of reliability properties of GRoC scales.

Study	Type of Reliability	Reliability Estimates	COSMIN	Quality of Studies
Costa et al. (2008)	Test-retest (LBP)	Intra-class coefficients (ICC)	Adequate	Excellent
Costa et al. (2008)	Test-retest (LBP)	0.90 (0.84–0.93)	Adequate	Excellent
Freitas et al. (2019)	Test-retest (LBP)	Intra-class coefficients (ICC)	Very good	Excellent
Freitas et al. (2019)	Test-retest (LBP)	0.76 (0.69–0.85)	Very good	Excellent
Moore-Reed et al. (2017)	Inter-rater/Agreement (SP)	Intra-class coefficients (ICC)	Adequate	Excellent
		0.62
		Weighted Kappa
		0.62
		Pearson's r
		0.63
Wang et al. (2018)	Test –retest (LSD)	Intra-class coefficients (ICC)	Adequate	Excellent
Wang et al. (2018)	Test –retest (LSD)	0.61	Adequate	Excellent

LBP = Low Back Pain, SP = Shoulder Pain, LSD = Lumbar Spine Disorders.