A review of the use of controlled multiple imputation in randomised controlled trials with missing outcome data

PT Tan, S Cro, E Van Vogt, M Szigeti… - BMC Medical Research …, 2021 - Springer
Background Missing data are common in randomised controlled trials (RCTs) and can bias
results if not handled appropriately. A statistically valid analysis under the primary missing …

Sensitivity analysis for clinical trials with missing continuous outcome data using controlled multiple imputation: a practical guide

S Cro, TP Morris, MG Kenward… - Statistics in …, 2020 - Wiley Online Library
Missing data due to loss to follow‐up or intercurrent events are unintended, but unfortunately
inevitable in clinical trials. Since the true values of missing data are never known, it is …

Bootstrap inference for multiple imputation under uncongeniality and misspecification

JW Bartlett, RA Hughes - Statistical methods in medical …, 2020 - journals.sagepub.com
Multiple imputation has become one of the most popular approaches for handling missing
data in statistical analyses. Part of this success is due to Rubin's simple combination rules …

Missing data in bioarchaeology II: A test of ordinal and continuous data imputation

A Wissler, KE Blevins… - American Journal of …, 2022 - Wiley Online Library
Objectives Previous research has shown that while missing data are common in
bioarchaeological studies, they are seldom handled using statistically rigorous methods …

Estimands and missing data in clinical trials of chronic pain treatments: advances in design and analysis

X Cai, JS Gewandter, H He, DC Turk, RH Dworkin… - Pain, 2020 - journals.lww.com
In clinical trials of treatments for chronic pain, the percentage of participants who withdraw
early can be as high as 50%. Major reasons for early withdrawal in these studies include …

Standard and reference‐based conditional mean imputation

M Wolbers, A Noci, P Delmar… - Pharmaceutical …, 2022 - Wiley Online Library
Clinical trials with longitudinal outcomes typically include missing data due to missed
assessments or structural missingness of outcomes after intercurrent events handled with a …

Reference‐based sensitivity analysis for time‐to‐event data

A Atkinson, MG Kenward, T Clayton… - Pharmaceutical …, 2019 - Wiley Online Library
The analysis of time‐to‐event data typically makes the censoring at random assumption, ie,
that—conditional on covariates in the model—the distribution of event times is the same …

On the multiple imputation variance estimator for control‐based and delta‐adjusted pattern mixture models

Y Tang - Biometrics, 2017 - Wiley Online Library
Control‐based pattern mixture models (PMM) and delta‐adjusted PMMs are commonly used
as sensitivity analyses in clinical trials with non‐ignorable dropout. These PMMs assume …

Reference-based multiple imputation—what is the right variance and how to estimate it

JW Bartlett - Statistics in Biopharmaceutical Research, 2023 - Taylor & Francis
Reference-based multiple imputation methods have become popular for handling missing
data in randomized clinical trials. Rubin's variance estimator is well known to be biased …

Reference‐based multiple imputation for missing data sensitivity analyses in trial‐based cost‐effectiveness analysis

B Leurent, M Gomes, S Cro, N Wiles… - Health …, 2020 - Wiley Online Library
Missing data are a common issue in cost‐effectiveness analysis (CEA) alongside
randomised trials and are often addressed assuming the data are 'missing at random' …