Study type

Study topic

Other

Study topic, other

Causal inference methods in randomized controlled trials

Study type

Not applicable
Study design details

Study design

Review of published literature and regulatory documents, simulation study

Main study objective

(1) To screen the scientific literature and regulatory documents to identify
(a) randomized clinical trials in which causal inference methods have been used to test and estimate treatment effects, and
(b) methodological approaches based on causal inference for testing and estimating treatment effects in randomized clinical trials.
(2) (a) To identify relevant clinical trial scenarios in which the causal pathway from randomized treatment to outcome may be affected by intercurrent events;
(b) To identify causal inference methods suitable for testing and estimating treatment effects within the estimand framework that appropriately account for these intercurrent events.
(3) To assess the statistical properties (including bias, coverage probabilities, type 1 error rate, and power) of the selected methods in a comprehensive simulation study based on clinical trial data generated under varying scenarios.