Diabetes Care, Vol 21, Issue 1 23-25, Copyright © 1998 by American Diabetes Association

ARTICLES

Evaluation of a self-administered sensory testing tool to identify patients at risk of diabetes-related foot problems

JA Birke and RJ Rolfsen
Foot and Physical Therapy Department, Gillis W. Long Hansen's Disease Center, Carville, LA 70721, USA. jbirke@concentric.net

OBJECTIVE: To study the use of a self-administered sensory testing tool designed to identify individuals at risk for diabetes-related foot problems and determine the inter-rater reliability between patient and provider sensory evaluations. RESEARCH DESIGN AND METHODS: Nine centers in eight states with established foot prevention centers mailed 196 self-screening testing materials to randomly selected patients with diabetes scheduled for follow-up appointments. Patients were instructed to perform a sensory test using a 10-g nylon filament at specified sites on the foot and to complete a brief survey form before their appointment. During the follow-up appointment, providers retested patients using an identical sensory filament at the same sites and completed a provider survey. RESULTS: Of the patients, 145 kept their appointments and completed the self-screening materials. There were 141 patient and 137 provider surveys that indicated the instructions were clear and easy to use. Sixty-eight percent of the patients reported self-testing without the assistance of another person. Patient and provider sensory test findings disagreed (P = 0.0014) in 18 of 145 cases and fair inter-rater reliability was found (kappa = 0.73). Disagreement in sensory tests was related to patient age (P = 0.012). Sensory loss, previously undetected by providers, was found in 23 case subjects. CONCLUSIONS: Self-administered sensory tests provide patients an opportunity to share in the responsibility for preventing diabetes-related foot problems but should not replace routine foot evaluation by a provider.
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