Primary outcomes from included studies	Measure named in included studies	Studies
1. Number of reported cases of child abuse and neglect
1a. measured subjectively by participant self‐reports of actual cases reported	Reported Involvement in Child Abuse ‐ single item 'reporting a case of suspected abuse' from a multi‐item measure	Hazzard 1984
	Teacher Prevention Behavior Measure ‐ a single item 'reporting a case of suspected abuse' from a multi‐item measure	Kleemeier 1988 Randolph 1994*
1b. measured subjectively by participant responses to vignettes	Recognition and Intention to Report Suspected Child Maltreatment	Alvarez 2010
	Teacher Vignettes Measure	Jacobsen 1993 Kleemeier 1988* Randolph 1994*
	Survey (Part Three)	Palusci 1995
1c. measured objectively in official records of reports made to child protection authorities	Nil	Nil
2. Changes in the quality of reported cases of child abuse and neglect, measured via coding of the actual contents of reports made to child protection authorities (i.e. in government records or archives)	Nil	Nil
3. Adverse events
3a. increase in failure to report cases of child abuse and neglect that warrant a report, measured subjectively by participant self‐reports (i.e. in questionnaires)	Nil	Nil
3b. increase in reporting of cases that do not warrant a report, measured subjectively by participant self‐reports (i.e. in questionnaires)	Nil	Nil