Reliability and Validity of The Injury Prevention Project Home Safety Survey | Cardiology | JAMA Pediatrics | JAMA Network
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Article
August 2007

Reliability and Validity of The Injury Prevention Project Home Safety Survey

Author Affiliations

Author Affiliations: Child Health Data Lab, Mary Ann & J. Milburn Smith Child Health Research Program, Children's Memorial Hospital, and Feinberg School of Medicine, Northwestern University (Dr Mason), Center on Obesity Management and Prevention, Children's Memorial Research Center, and Departments of Pediatrics and Preventive Medicine, Feinberg School of Medicine, Northwestern University (Dr Christoffel), and Department of Preventive Medicine and Epidemiology, Loyola University Stritch School of Medicine (Dr Sinacore), Chicago, Illinois.

Arch Pediatr Adolesc Med. 2007;161(8):759-765. doi:10.1001/archpedi.161.8.759
Abstract

Objective  To evaluate reliability and validity of The Injury Prevention Project Safety Survey (TIPP-SS) of the American Academy of Pediatrics in measuring injury prevention practices.

Design  Reliability was measured using the test-retest method. Validity is measured comparing results of parent-completed TIPP-SSs and a home safety audit conducted in the participants' homes at the time of survey.

Setting  Two Chicago Public School Early Childhood Education program sites.

Participants  Eighty-eight families (44 English speaking and 44 Spanish speaking) with a child aged 3 to 5 years attending a site A or B Chicago Public School Early Childhood Education program. Participants were split evenly between sites.

Intervention  For the reliability study, primary caregivers completed TIPP-SS twice, 14 to 24 days apart. For the validity study, primary caregivers completed TIPP-SS during a home visit in which a research assistant completed a home safety audit. A total of 44 home visits were completed, 22 in Spanish and 22 in English.

Outcome Measures  Test-retest reliability and validity of TIPP-SS. Results are compared for agreement of individual items and the whole survey.

Results  The Injury Prevention Project Safety Survey is reliable but not valid. The Injury Prevention Project Safety Survey is a good measure of the concept of injury prevention knowledge and practice (Cronbach α = 0.869). External reliability was statistically supported as well (P = .40). The Injury Prevention Project Safety Survey is not a valid measure of injury prevention behaviors. Validity was poor for items based on observed data (Pearson r = 0.287, in English; Pearson r = − 0.449, in Spanish). Validity was much stronger for parent report data (Pearson r = 0.689, in English; Pearson r = 1.00, in Spanish).

Conclusions  Results suggest that TIPP-SS measures knowledge and attitudes rather than behavior. Parents are often aware of the desired behavior or condition and report those instead of actual conditions or behaviors. This suggests that the quest to develop a valid home-based, injury prevention, behavior assessment tool should continue and be done in a way that carefully addresses potential instruments' validity and reliability.

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