Table 2.

Study quality ratings for quasi-experimental study.

Items	Studies reviewed
	de Jong, 2016 [14]	Delbanco et al, 2012 [34]	Greenwood et al, 2014 [16]	Lee et al, 2017 [18]	Milani et al, 2017 [19]	Toscos et al, 2016 [21]	Weisner et al, 2016 [22]
Is it clear in the study what is the cause, and what is the effect?	1	1	1	1	1	1	1
Were the participants included in any comparisons similar?	0	0	1	0	1	1	1
Were the participants included in any comparisons receiving similar treatment/care, other than the exposure or intervention of interest?	0	0	1	0	1	1	1
Was there a control group?	1	0	1	1	1	0	1
Were there multiple measurements of the outcome both pre- and postintervention/exposure?	1	0	1	1	1	1	1
Was follow-up complete and, if not, were differences between groups in terms of their follow-up adequately described and analyzed?	1	0	0	1	0	0	1
Were the outcomes of participants included in any comparisons measured in the same way?	1	0	1	0	1	1	1
Were outcomes measured in a reliable way?	1	0	1	1	1	1	1
Was appropriate statistical analysis used?	1	1	1	1	1	1	1