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Reliability Study of the Leg-O-Meter, an Improved Tape Measure Device, in Patients with Chronic Venous Insufficiency of the Leg

Xavier Kurz, MD, MSc

Francois Zuccarelli, MD

Jean-Jacques Ducros, MD

Lucien Abenhaim, MD, ScD

Centre for Clinical Epidemiology and Community Studies SMBD-Jewish General Hospital 3755 Côte-Ste-Catherine Montreal (Quebec) Canada H3T 1E2

The objective of this study was to evaluate the inter-rater reliability of the Leg-O-Meter, an instrument designed to measure the ankle or calf circumference. The Leg-O-Meter consists of a tape measure fixed to a stand attached to a small board on which the patient is in standing position. For this study the tape measure of the Leg-O-Meter was fixed at 10 cm from the board in order to standardize all measurements. Informed consent to participate in the study was obtained from 39 patients consulting the phlebology clinic of Hôpital St-Michel, Paris, France. Participants were asked to enter a closed room where four independent and blinded observers consecutively took measurements of both legs with the Leg-O-Meter. The order of the observers was randomized between patients. Under the assumption of a two-way random effects model an intraclass correlation coef ficient (ICC) was used to determine the reliability or reproducibility of a measure with the Leg-O-Meter. The overall reliability coefficient calculated by the ICC for the right and left leg were estimated at 97.09% [95.52%;100%] 950,o and 97.08% [95.86%;100%]_95%, respectively. The authors conclude that the Leg-O-Meter gives a standardized and reliable measure of the circumference of the ankle. Furthermore, it is not invasive or costly.

Angiology, Vol. 49, No. 3, 169-173 (1998)
DOI: 10.1177/000331979804900301


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