Auto-advance or HSM improves	Auto-advance or HSM harms	Auto-advance or HSM makes no significant difference
Completion time	Rivers (2006)	Roberts et al. (2013)	Arn et al. (2015)
	Hays et al. (2010)		de Bruijne (2015)
	Klausch et al. (2012)		Selkälä & Couper (2017): for phones only
	Selkälä & Couper (2017): for PCs only
	Lugtig et al. 2018
Item nonresponse		de Bruijne (2015)	Hammen (2010)
Data quality	Roberts et al. (2013)	Hammen (2010)	Hays et al. (2010)
	Klausch et al. (2012)
Breakoff rate	Rivers (2006)		Selkälä & Couper (2017)
	Roberts et al. (2013)
	Klausch et al. (2012)
User satisfaction	Rivers (2006)		de Bruijne (2015)
	Roberts et al. (2013)
	Klausch (2012)