Methodologic Considerations in Calculating and Analyzing Proportion of Time Covered as a Measure of Longitudinal Cancer Screening Adherence.

ABSTRACT:

Background

Proportion of time covered (PTC, or "covered time") is a longitudinal measure of adherence to preventive health services, the use of which has increased in recent years. This measure is helpful for evaluating the success of delivering screening interventions over time. However, there are challenges and nuances in computing and interpreting PTC.

Methods

In this manuscript, we describe some desired properties of PTC measures, challenges in achieving those, and potential solutions using hypothetical examples.

Results

We propose a modified PTC measure (mPTC) to complement the standard, existing PTC measure. The mPTC measure focuses on screening completion rather than initiation when a screening modality requires more than one step; is affected less by loss to f

SUBMITTER: Chubak J 

PROVIDER: S-EPMC7415680 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature