7 citations
3 papers
stat.ME2018
A monotone data augmentation algorithm for multivariate nonnormal data: with applications to controlled imputations for longitudinal trials
Yongqiang Tang
An efficient monotone data augmentation (MDA) algorithm is proposed for missing data imputation for incomplete multivariate nonnormal data that may contain variables of different t…
stat.ME2018★ 7 cited
A noniterative sample size procedure for tests based on t distributions
Yongqiang Tang
A noniterative sample size procedure is proposed for a general hypothesis test based on the t distribution by modifying and extending Guenther's (1981) approach for the one sample…
stat.ME2016★ 5 cited
Closed-form REML estimators and sample size determination for mixed effects models for repeated measures under monotone missingness
Yongqiang Tang
We derive the closed-form restricted maximum likelihood (REML) estimator and Kenward-Roger's variance estimator for fixed effects in the mixed effects model for repeated measures (…