Table 2

Study appraisals

Article/rating	Screening questions	Quantitative (randomised)				Quantitative (non-randomised)				Quantitative (descriptive)				Mixed methods			Quality score (%)
Article/rating	Screening questions	1	2	3	4	1	2	3	4	1	2	3	4	1	2	3
Davis36**	✓✓									x	x	x	x				0
Kerr and Goss41***	✓✓	✓	x	✓	x												50
Perna et al 40**	✓✓	✓	✓	✓	✓												100
Kolt et al 42***	✓✓	x	x	✓	x												25
Arnason et al 46***	✓✓	x	x	✓	✓												50
Johnson et al 37***	✓✓	✓	x	✓	✓												75
Maddison and Prapavessis18***	✓✓	x	x	✓	x												25
Noh et al 38***	✓✓	x	x	✓	x												25
Edvardsson et al 43***	✓✓	x	x	✓	✓												50
Ivarsson et al 39***	✓✓	✓	x	✓	✓												75
Tranaeus et al***45	✓✓					x	✓	✓	✓								75
Tranaeus et al***47	✓✓					x	✓	✓	✓								75
Olmedilla-Zafra et al 44***	✓✓					x	x	✓	✓								50

✓=denotes criteria met, x=denotes criteria not met or cannot tell, shaded=not applicable criteria. *** denotes full agreement for the inclusion of the study, ** denotes majority agreement for the inclusion of the study.