Winokur 2008.

Methods	Matched comparison on gender, ethnicity, county of placement, programme area, allegation severity, removal reason
Participants	Kinship n = 318 Foster n = 318 Local sample drawn from children placed in out‐of‐home care in 12 Colorado counties
Interventions	See Table 2
Outcomes	Placement Stability ‐ Number of Placements; Length of Stay; Re‐entry Permanancy ‐ Reunification; Adoption; Guardianship; Still in Placement Re‐abuse ‐ Institutional Abuse
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment (selection bias)	Low risk	Attempt was made to equate the kinship care and foster care groups through matching; Evidence on setting, placement characteristics, and child demographics was reported on the comparability of the groups
Blinding of participants and personnel (performance bias) All outcomes	Unclear risk	Uncertain if kinship care and foster care groups experienced different exposure to the intervention; Uncertain if groups received different services during placement
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	Uncertain if kinship care and foster care groups were defined in same way; There was no evidence of biased assessment resulting from the type of placement
Incomplete outcome data (attrition bias) All outcomes	Low risk	All participants were accounted for in the reporting of results; Attrition could not have influenced the results
Selective reporting (reporting bias)	Low risk	Instrumentation used to measure the outcomes was specified completely; Reliability and/or validity information was reported for instrumentation