Using a prediction approach to assess agreement between two continuous measurements
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Updated: Jun 14, 2026

Using Continuous Data Tracking Technology to Study Exercise Adherence in Pulmonary Rehabilitation
Published on: November 9, 2013
Cody Hamilton1, James D Stamey
1Department of Clinical Operations, Edwards Lifesciences, Irvine, CA 92614, USA. Cody_Hamilton@edwards.com
Abstract:
The problem of assessing agreement between two devices occurs with great frequency in the medical literature. If it can be demonstrated that a new device agrees sufficiently with a device currently in use, then the new device can be approved for general use. This work discusses how a prediction interval can be used to estimate the whether a future difference between two devices will be within acceptable limits with reasonable confidence. The method is illustrated with an example involving measurements of peak expiratory flow.
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