Baker, A. J. L., Piotrkowski, C. S., Brooks-Gunn, J. (2003). Program effectiveness and parent involvement in HIPPY (Study 2, AR sample, cohort 2). In M. Westheimer (Ed.), Parents making a difference: International research on the Home Instruction for Parents of Preschool Youngsters (HIPPY) program (Chapter 8).The Hebrew University Magnes Press.
| Screening decision | Screening conclusion | HomVEE procedures and standards version |
|---|---|---|
| Passes screens | Eligible for review | Version 1 |
| Rating | Design | Attrition | Baseline equivalence | Compromised randomization | Confounding factors | Valid, reliable measure(s) |
|---|---|---|---|---|---|---|
| Moderate | Non-experimental comparison group design | Not applicable | Established on race/ethnicity and SES; outcomes not feasible to assess at baseline | None | None | Not assessed in manuscripts reviewed before 2021 |
This book chapter examines four distinct samples, each of which HomVEE reviewed and reported separately as follows: Study 1: New York sample, Cohort 1; Study 1: New York sample, Cohort 2; Study 2: Arkansas sample, Cohort 1; and Study 2: Arkansas sample, Cohort 2. The sample reported here (Arkansas sample, Cohort 2) is also reported in Baker & Piotrkowski (1996).
| Study participants | In the analytic sample, 96 percent of children were African American and 4 percent were White. About half the parents or caregivers had a high school diploma (49 percent in the intervention group and 50 percent in the comparison group) but no higher education, and just over one-third did not have a high school diploma (37 percent in the intervention group and 38 percent in the comparison group). Fewer than half of the families used public assistance as income (46 percent in the intervention group and 38 percent in the comparison group). At baseline, the children's average age was 55 months. |
|---|---|
| Setting | Arkansas |
| Intervention services | During the first year of HIPPY enrollment, children were not participating in any other preschool programs. During the second year, 92 percent of the children in the study sample (intervention and comparison) were enrolled in kindergarten. |
| Comparison conditions | During the first year of the study, comparison group children did not participate in any preschool programs. During the second year, 92 percent of the children in the study sample (intervention and comparison) were enrolled in kindergarten. |
| Subgroups examined |
This field lists subgroups examined in the manuscript (even if they were not replicated in other samples and not reported on the summary page for this model’s report). Subgroups are not listed for manuscripts reviewed before 2021. |
| Funding sources | Not specified. |
| Author affiliation | Not specified. |
| Peer reviewed | Peer reviewed status is not listed for manuscripts reviewed before 2021. |
Clinicaltrials.gov Identifier: None found. Study registration was assessed by HomVEE beginning with the 2014 review.
Findings that rate moderate or high
| Rating | Outcome measure | Effect | Sample | Timing of follow-up | Sample size | Intervention group | Comparison group | Group difference | Effect size | Statistical significance | Notes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Moderate | Classroom adaptation measured using the Child Classroom Adaptation Index (CCAI) |
FavorableUnfavorable or ambiguousNo Effect |
Arkansas sample, Cohort II |
Program completion |
113 children | Adjusted mean = 3.04 | Adjusted mean = 3.29 | Mean difference = -0.25 | Study reported = 0.22 | Not statistically significant, p= 0.39 |
Model controls for children's ages, parent's education and ethnicity, family structure, source of family income, and children's baseline scores on the Cooperative Preschool Inventory (CPI) |
| Moderate | Classroom adaptation measured using the Child Classroom Adaptation Index (CCAI) |
FavorableUnfavorable or ambiguousNo Effect |
Arkansas sample, Cohort II |
1 year after program completion |
113 children | Adjusted mean = 3.38 | Adjusted mean = 3.50 | Mean difference = -0.12 | Study reported = 0.13 | Not statistically significant, p= 0.61 |
Model controls for children's ages, parent's education and ethnicity, family structure, source of family income, and children's baseline scores on the Cooperative Preschool Inventory (CPI) |
| Moderate | Standardized Achievement measured using the Standford Early School Achievement Test (second edition) |
FavorableUnfavorable or ambiguousNo Effect |
Arkansas sample, Cohort II |
Program completion |
113 children | Adjusted mean = 41.54 | Adjusted mean = 51.55 | Mean difference = -10.01 | Study reported = 0.63 | Statistically significant, p= 0.01 |
Model controls for children's ages, parent's education and ethnicity, family structure, source of family income, and children's baseline scores on the Cooperative Preschool Inventory (CPI) |
| Moderate | Standardized Achievement measured using the Standford Early School Achievement Test (second edition) |
FavorableUnfavorable or ambiguousNo Effect |
Arkansas sample, Cohort II |
1 year after program completion |
113 children | Adjusted mean = 37.36 | Adjusted mean = 38.86 | Mean difference = -1.50 | Study reported = 0.07 | Not statistically significant, p= 0.78 |
Model controls for children's ages, parent's education and ethnicity, family structure, source of family income, and children's baseline scores on the Cooperative Preschool Inventory (CPI) |