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Reliability and validity of the School Health Policies and Programs Study 2000 questionnaires
Nancy D Brener1, Laura Kann, Timothy K Smith
1Division of Adolescent and School Health, Centers for Disease Control and Prevention, MS K-33, 4770 Buford Highway, NE, Atlanta, GA 30341, USA. nadl@cdc.gov
The Journal of School Health
|March 8, 2003
Summary
The Centers for Disease Control and Prevention (CDC) evaluated School Health Policies and Programs Study (SHPPS) 2000 questionnaires. Results show generally valid data for state/district levels and moderate to excellent reliability for school/classroom levels.
Area of Science:
- Public Health
- Health Services Research
- Survey Methodology
Background:
- The School Health Policies and Programs Study (SHPPS) is a key source of information on school health policies and programs in the United States.
- Assessing the quality of data collection instruments is crucial for the validity and reliability of study findings.
Purpose of the Study:
- To evaluate the data quality of the questionnaires used in the SHPPS 2000.
- To identify areas for improvement in questionnaire design and data collection methods for future SHPPS iterations.
Main Methods:
- Validity of state- and district-level questionnaires was assessed via telephone interviews with original respondents.
- Test-retest reliability of school- and classroom-level questionnaires was evaluated through computer-assisted repeat interviews.
Main Results:
- State- and district-level questionnaires generally yielded valid data, with minor identified threats to validity.
- School- and classroom-level questionnaires demonstrated varied reliability, ranging from poor to almost perfect, with most showing moderate or substantial reliability.
Conclusions:
- The SHPPS 2000 questionnaires are largely reliable and valid for data collection.
- Findings will inform revisions to SHPPS questionnaires and exploration of alternative data collection strategies for enhanced data quality in future studies.