## About Proportion of Days Covered Calculator (Formula)

The proportion of days covered calculator is a tool used to calculate the percentage of time that a certain condition or event occurs within a specified timeframe. It is commonly used in healthcare research and medication adherence studies to determine the extent to which patients comply with prescribed treatment regimens.

The formula for calculating the proportion of days covered (PDC) is as follows:

**PDC = (Number of days covered / Total number of days in the timeframe) * 100**

Where: PDC is the proportion of days covered, expressed as a percentage Number of days covered is the count of days during which the condition or event of interest occurred (e.g., medication taken) Total number of days in the timeframe represents the entire duration or observation period under consideration

By dividing the number of days covered by the total number of days and multiplying the result by 100, the proportion of days covered is obtained as a percentage. This measure provides insights into the level of adherence or compliance with a treatment or intervention.

The proportion of days covered calculator is useful in evaluating patient adherence to medications, therapies, or interventions over a specified time period. It helps researchers and healthcare professionals assess treatment effectiveness and patient compliance, enabling interventions or adjustments to improve patient outcomes.