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TEN-SPIDERS TOOL for Reporting Medication Adherence Methods Using the Proportion of Days Covered (PDC)

A website dedicated to sharing resources to support the adoption and translation of the TEN-SPIDERS tool to standardise reporting of proportion of days covered (PDC) methods

EQUATOR

The TEN-SPIDERS tool is now recommended by the EQUATOR Network for studies involving the measurement of adherence to cardiovascular medicines, using the Proportion of Days Covered (PDC) approach.

Measure Smarter. Report Better. Implement TEN-SPIDERS Today.

Welcome to the home of the TEN-SPIDERS Tool— a new, practical approach to medication adherence reporting. Designed to simplify and standardise how we measure Proportion of Days Covered (PDC), TEN-SPIDERS brings clarity, transparency, and consistency to the way adherence data is reported and interpreted.

Whether you're a clinician, researcher, pharmacist, or policymaker, this site is your go-to hub for learning about the tool, exploring real-world use cases, and accessing implementation resources. Join us in advancing open science and the field of pharmacoepidemiology.