Interrater reliability of students using hand and pinch dynamometers
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Published on: June 12, 2019
Debra Lindstrom-Hazel1, Andrew Kratt, Laura Bix
1Department of Occupational Therapy, Western Michigan University, 147 West Ridge Circle, Kalamazoo, MI 49009, USA. dhazel@wmich.edu
Objective:
We sought to analyze the interrater reliability of occupational therapy students using standard hand-strength instruments.
Method:
Seventy-three healthy students, faculty, and staff members from a midwestern university participated in this study. Each participant completed three trials for both grip and pinch strength bilaterally. Two student raters independently scored each trial.
Results:
The interrater reliability of the grip and pinch strength trials was determined using an intraclass correlation coefficient (ICC) one-way random effects model (1,1). The ICC for the Jamar dynamometer ranged from .996 to .998 (p < .05). The ICC of the pinch gauge ranged from .949 to .990 (p < .05).
Conclusion:
This study demonstrated that occupational therapy students can be reliable raters after being trained and tested for competency. To improve psychometric properties for instruments commonly used in the profession, students can participate in collecting normative data for hand-held dynamometry.
