Table 3.

Quality appraisal of included articles using Hawker et al. (2002).

Author/year	Abstract/title	Introduction/aims	Methods/data	Sampling	Data analysis	Ethics/bias	Findings	Transferability/generalisability	Implications/usefulness
Eliasson et al. (2011)	Good	Good	Fair	Fair	Fair	Fair	Good	Fair	Fair
Guilhot et al. (2013)	Good	Fair	Good	Fair	Fair	Fair	Good	Fair	Fair
Chen et al. (2014)	Good	Fair	Fair	Fair	Poor	Fair	Fair	Fair	Fair
Wu et al. (2015)	Fair	Good	Fair	Fair	Fair	Fair	Fair	Fair	Good
Bolarinwa et al. (2018)	Fair	Fair	Fair	Fair	Poor	Fair	Good	Fair	Fair
Graffigna et al. (2017)	Fair	Fair	Fair	Poor	Fair	Poor	Fair	Poor	Fair
Lim et al. (2017)	Good	Good	Good	Fair	Poor	Fair	Fair	Good	Good
Tan et al. (2017)	Good	Good	Good	Fair	Fair	Fair	Good	Fair	Good
Boons et al. (2018)	Fair	Fair	Fair	Fair	Poor	Fair	Good	Fair	Good