Table 1.

Illustrating the breakdown of quality appraisal scores and inter-rater reliability values for quantitative method studies

Author	Checklist item														Inter-rater reliability
	1) Question or objective sufficiently described?	2) Evident and appropriate design	3) Subject selection	4) Subject characteristics	5) Random allocation	6) Blinding of investigators	7) Blinding of subjects	8) Defined androbust outcome measures	9) Sample size	10) Analysis described and appropriate	11) Estimate of variance	12) Controlled for confounding	13) Sufficient Results	14) Results match Conclusions?
Huang et al., (2019) [36]	2	2	2	2	2	N/A	N/A	2	2	2	2	0	2	2	1 (100%)
Park et al., (2019) [34]	2	2	2	2	2	N/A	N/A	2	2	2	2	N/A	2	2	1 (100%)
Ji et al., (2019) [33]	2	2	2	2	1	N/A	N/A	2	2	1	2	2	2	2	1 (100%)
Lafaro et al., (2019) [37]	2	1	2	2	N/A	N/A	N/A	1	1	2	1	N/A	2	2	1 (100%)
Timmerman et al., (2017) [13]	2	2	2	1	N/A	N/A	N/A	2	1	2	2	N/A	2	2	1 (100%)
Coats et al., (2019) [35]	2	2	1	2	N/A	N/A	N/A	2	1	2	2	1	2	2	1 (100%)
Maguire et al., (2015) [15]	2	2	2	2	N/A	N/A	N/A	2	2	2	2	N/A	2	2	1 (100%)
Denis et al., (2014) [32]	1	1	2	2	N/A	N/A	N/A	2	1	2	N/A	N/A	2	2	1 (100%)