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This paper highlights the importance of estimands in understanding treatment effects from internet-based interventions, suggesting better implementation strategies.
The ICH E9(R1) Addendum on Estimands and Sensitivity Analysis provides a framework for defining the treatment effect a trial intends to estimate—the estimand. The addendum is widely adopted in pharmaceutical research. However, it remains underutilized in trials investigating internet-based interventions (IBIs). This manuscript introduces the addendum to IBI researchers. It concludes that estimands are essential to improve the interpretability, relevance, and validity of effect estimates derived in IBI trials.
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Heinrich et al. (2025) studied this question.
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