Ratitch B - Search Results

1

Missing data in clinical trials: from clinical assumptions to statistical analysis using pattern mixture models.

Ratitch B, O'Kelly M, Tosiello R. Ratitch B, et al. Pharm Stat. 2013 Nov-Dec;12(6):337-47. doi: 10.1002/pst.1549. Epub 2013 Jan 4. Pharm Stat. 2013. PMID: 23292975

2

Sensitivity to censored-at-random assumption in the analysis of time-to-event endpoints.

Lipkovich I, Ratitch B, O'Kelly M. Lipkovich I, et al. Among authors: ratitch b. Pharm Stat. 2016 May;15(3):216-29. doi: 10.1002/pst.1738. Epub 2016 Mar 21. Pharm Stat. 2016. PMID: 26997353

3

Multiplicity issues in exploratory subgroup analysis.

Lipkovich I, Dmitrienko A, Muysers C, Ratitch B. Lipkovich I, et al. Among authors: ratitch b. J Biopharm Stat. 2018;28(1):63-81. doi: 10.1080/10543406.2017.1397009. Epub 2017 Nov 27. J Biopharm Stat. 2018. PMID: 29173045 Review.

4

Points to consider for analyzing efficacy outcomes in long-term extension clinical trials.

Ratitch B, Lipkovich I, Erickson JS, Zhang L, Mallinckrodt CH. Ratitch B, et al. Pharm Stat. 2018 Nov;17(6):685-700. doi: 10.1002/pst.1888. Epub 2018 Jul 26. Pharm Stat. 2018. PMID: 30051580

5

Recent Developments in the Prevention and Treatment of Missing Data.

Mallinckrodt C, Roger J, Chuang-Stein C, Molenberghs G, O'Kelly M, Ratitch B, Janssens M, Bunouf P. Mallinckrodt C, et al. Among authors: ratitch b. Ther Innov Regul Sci. 2014 Jan;48(1):68-80. doi: 10.1177/2168479013501310. Ther Innov Regul Sci. 2014. PMID: 30231419

6

Choosing Estimands in Clinical Trials: Putting the ICH E9(R1) Into Practice.

Ratitch B, Bell J, Mallinckrodt C, Bartlett JW, Goel N, Molenberghs G, O'Kelly M, Singh P, Lipkovich I. Ratitch B, et al. Ther Innov Regul Sci. 2020 Mar;54(2):324-341. doi: 10.1007/s43441-019-00061-x. Epub 2020 Jan 4. Ther Innov Regul Sci. 2020. PMID: 32072573

7

Defining Efficacy Estimands in Clinical Trials: Examples Illustrating ICH E9(R1) Guidelines.

Ratitch B, Goel N, Mallinckrodt C, Bell J, Bartlett JW, Molenberghs G, Singh P, Lipkovich I, O'Kelly M. Ratitch B, et al. Ther Innov Regul Sci. 2020 Mar;54(2):370-384. doi: 10.1007/s43441-019-00065-7. Epub 2020 Jan 6. Ther Innov Regul Sci. 2020. PMID: 32072586

8

Aligning Estimators With Estimands in Clinical Trials: Putting the ICH E9(R1) Guidelines Into Practice.

Mallinckrodt CH, Bell J, Liu G, Ratitch B, O'Kelly M, Lipkovich I, Singh P, Xu L, Molenberghs G. Mallinckrodt CH, et al. Among authors: ratitch b. Ther Innov Regul Sci. 2020 Mar;54(2):353-364. doi: 10.1007/s43441-019-00063-9. Epub 2020 Jan 6. Ther Innov Regul Sci. 2020. PMID: 32072593

9

Using principal stratification in analysis of clinical trials.

Lipkovich I, Ratitch B, Qu Y, Zhang X, Shan M, Mallinckrodt C. Lipkovich I, et al. Among authors: ratitch b. Stat Med. 2022 Aug 30;41(19):3837-3877. doi: 10.1002/sim.9439. Epub 2022 Jun 13. Stat Med. 2022. PMID: 35851717

10

Statistical Issues and Recommendations for Clinical Trials Conducted During the COVID-19 Pandemic.

Meyer RD, Ratitch B, Wolbers M, Marchenko O, Quan H, Li D, Fletcher C, Li X, Wright D, Shentu Y, Englert S, Shen W, Dey J, Liu T, Zhou M, Bohidar N, Zhao PL, Hale M. Meyer RD, et al. Among authors: ratitch b. Stat Biopharm Res. 2020 Jul 6;12(4):399-411. doi: 10.1080/19466315.2020.1779122. Stat Biopharm Res. 2020. PMID: 34191971 Free PMC article.

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