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Research Article  |   March 2009
Interrater Reliability of Students Using Hand and Pinch Dynamometers
Author Affiliations
  • Debra Lindstrom-Hazel, PhD, OTR, is Associate Professor, Department of Occupational Therapy, Western Michigan University, 147 West Ridge Circle, Kalamazoo, MI 49009; dhazel@wmich.edu
  • Andrew Kratt, MS, was Graduate Student at Western Michigan University, Kalamazoo, at the time of this study and is now Occupational Therapist, Medical Facilities of America, Chesapeake, VA
  • Laura Bix, PhD, is Assistant Professor, School of Package Engineering, Michigan State University, East Lansing
Article Information
Assessment Development and Testing / Education of OTs and OTAs / Rehabilitation, Disability, and Participation
Research Article   |   March 2009
Interrater Reliability of Students Using Hand and Pinch Dynamometers
American Journal of Occupational Therapy, March/April 2009, Vol. 63, 193-197. doi:10.5014/ajot.63.2.193
American Journal of Occupational Therapy, March/April 2009, Vol. 63, 193-197. doi:10.5014/ajot.63.2.193
Abstract

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.