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Psychometric testing of SPIDER: data capture tool for systematic literature reviews
Sherrilene Classen1, Sandra Winter, Kezia D Awadzi
1Department of Occupational Therapy and Rehabilitation Science Doctoral Program College of Public Health and Health Professions, University of Florida, Gainesville, FL 32611-0164, USA. sclassen@phhp.ufl.edu
Objective:
Systematic literature reviews contribute to evidence-based occupational therapy, yet no data capture tool currently exists to validly and reliably appraise the characteristics and quality of primary studies.
Method:
We determined the psychometrics of Systematic Process for Investigating and Describing Evidence-Based Research (SPIDER) and piloted it with 201 studies included in a systematic literature review.
Results:
Content validity showed item relevance with 73% agreement between two experts. For the quality construct, seven of nine quality indicators were positively (p < .05) correlated with the overall quality score. The quality scores were positively correlated (p < .05) with two objective measures, inferring criterion validity. Intrarater reliability was moderate to perfect (kappa = 0.4-1.0). Cross-tab analyses showed less variation in experienced reviewers' interrater reliability.
Conclusion:
SPIDER provides plausible opportunities for occupational therapy researchers and graduate students to appraise the characteristics and quality of primary studies but requires testing across other settings.
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