Use of future events in cohort inclusion criteria

[Gowtham_Rao]

Also this discussion @Adam_Black

@jswerdel

In this definition, subjects would be included in the cohort if they had any of the signs, symptoms, or treatments as long as it was followed by a diagnosis code for SLE within 0-90 days after the sign, symptom, or treatment.

This morning there was a discussion about immortal time bias - started by @Adam_Black here Use of future events in cohort inclusion criteria - #6 by Gowtham_Rao and @Kevin_Haynes pointed to time-related biases discussed here Time-related biases in pharmacoepidemiology - PubMed

@Patrick_Ryan

And here, you’ve demonstrated both how we can DETECT index date misclassification using CohortDiagnostics (by looking at prior conditions or treatments that are likely indicators of condition start preceding diagnosis) and how to CORRECT for index date misclassification using ATLAS (by creating an entry event for any of the potential disease markers, and then imposing an inclusion criteria requiring the diagnosis code on or in some time after the entry event).