Evidence analysis on the utilization of platelet-rich plasma as an adjuvant in the repair of rotator cuff tears

Table 2 Search methodology used by each study

Sl. No	Search parameters	Chahal (2012)	Moraes (2013)	Zhang (2013)	Li (2014)	Zhao (2015)	Warth (2015)	Vavken (2015)	Cai (2015)	Xiao (2016)	Hurley (2018)	Han (2019)	Wang (2019)	Chen (2019)	Cavendish (2020)	Hurley (2020)	Yang (2020)	Zhao (2021)	Ryan (2021)	Xu (2021)	Li (2021)
1	Publication language restriction	X	X	NA	X	X	X	X	NA	X	NA	X	NA	√	√	NA	NA	√	√	X	NA
2	Publication status restriction	X	NA	NA	NA	X	NA	NA	NA	X	X	NA	NA	X	NA	X	NA	NA	NA	X	NA
3	PubMed	√	X	√	√	√	√	√	√	√	X	√	√	√	√	X	√	√	√	X	√
4	Medline	√	√	X	X	X	X	X	X	X	√	X	X	√	X	√	X	X	√	√	X
5	Embase	X	X	X	√	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
6	Cochrane library	X	X	X	√	X	X	X	X	X	X	X	X	X	X	X	X	X	X	√	X
7	Web of Science	X	√	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
8	Scopus	√	√	√	√	√	√	√	√	√	√	√	√	X	√	√	√	√	X	√	√
9	Google Scholar	√	√	√	X	√	X	√	X	√	√	√	√	√	X	√	√	√	√	√	√
10	CINAHL	X	X	X	X	X	X	X	√	√	X	X	X	X	X	X	X	X	X	X	√
11	AMED	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
12	CNKI	X	X	X	X	X	X	X	X	√	X	X	X	X	X	X	√	X	X	X	X
13	Wan Fang	X	X	X	X	X	X	√	X	X	X	X	X	X	X	X	X	X	X	X	X
14	CBM literature	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
15	VIP	X	X	X	X	X	X	X	X	X	√	X	X	X	X	√	X	X	X	X	X

AMED: Allied and Complementary Medicine; CBM: Chinese BioMedical database; CINAHL: Cumulative Index to Nursing and Allied Health Literature; CNKI: Chinese National Knowledge Infrastructure; NA: Not available; VIP: Chinese Scientific Journals Database.