Barnett, T., Roost, F. D., & McEachran, J. (2012). Evaluating the effectiveness of the Home Interaction Program for Parents and Youngsters (HIPPY). Family Matters, 91, 27–37.
Study design characteristics contributing to rating
| Design | Attrition | Baseline equivalence | Confounding factors? | Valid, reliable measures? |
|---|---|---|---|---|
| Non-experimental comparison group design | Not applicable |
Not assessed |
Yes |
Notes from the review of this manuscript
Data collection was carried out between 2004 and 2006 for the comparison group and between 2009 and 2010 for the intervention group. Because these are non-overlapping periods, the effect of the intervention cannot be distinguished from contextual factors that may have changed between the two periods, such as economic condition.