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