Ma X - Search Results

1

Two assumptions of the prior event rate ratio approach for controlling confounding can be evaluated by self-controlled case series and dynamic random intercept modeling.

Cheung YB, Ma X, Mackenzie G. Cheung YB, et al. Among authors: ma x. J Clin Epidemiol. 2024 Nov;175:111511. doi: 10.1016/j.jclinepi.2024.111511. Epub 2024 Sep 2. J Clin Epidemiol. 2024. PMID: 39233134 Free PMC article.

2

Statistical inference in matched case-control studies of recurrent events.

Cheung YB, Ma X, Lam KF, Li J, Yung CF, Milligan P, Mackenzie G. Cheung YB, et al. Among authors: ma x. Int J Epidemiol. 2020 Jun 1;49(3):996-1006. doi: 10.1093/ije/dyaa012. Int J Epidemiol. 2020. PMID: 32125376 Free PMC article.

3

Bias control in the analysis of case-control studies with incidence density sampling.

Cheung YB, Ma X, Lam KF, Li J, Milligan P. Cheung YB, et al. Among authors: ma x. Int J Epidemiol. 2019 Dec 1;48(6):1981-1991. doi: 10.1093/ije/dyz116. Int J Epidemiol. 2019. PMID: 31209487

4

Estimation of the primary, secondary and composite effects of malaria vaccines using data on multiple clinical malaria episodes.

Cheung YB, Ma X, Lam KF, Milligan P. Cheung YB, et al. Among authors: ma x. Vaccine. 2020 Jul 6;38(32):4964-4969. doi: 10.1016/j.vaccine.2020.05.086. Epub 2020 Jun 12. Vaccine. 2020. PMID: 32536547 Free article.

5

Ratio estimators of intervention effects on event rates in cluster randomized trials.

Ma X, Milligan P, Lam KF, Cheung YB. Ma X, et al. Stat Med. 2022 Jan 15;41(1):128-145. doi: 10.1002/sim.9226. Epub 2021 Oct 15. Stat Med. 2022. PMID: 34655097 Free PMC article.

6

Inclusion of unexposed subjects improves the precision and power of self-controlled case series method.

Ma X, Lam KF, Cheung YB. Ma X, et al. J Biopharm Stat. 2022 Mar;32(2):277-286. doi: 10.1080/10543406.2021.1998099. Epub 2021 Nov 15. J Biopharm Stat. 2022. PMID: 34779700

7

Inclusion of unexposed clusters improves the precision of fixed effects analysis of stepped-wedge cluster randomized trials.

Lee KM, Ma X, Yang GM, Cheung YB. Lee KM, et al. Among authors: ma x. Stat Med. 2022 Jul 10;41(15):2923-2938. doi: 10.1002/sim.9394. Epub 2022 Mar 29. Stat Med. 2022. PMID: 35352382

8

Modelling non-linear patterns of time-varying intervention effects on recurrent events in infectious disease prevention studies.

Cheung YB, Ma X, Lam KF, Yung CF, Milligan P. Cheung YB, et al. Among authors: ma x. J Biopharm Stat. 2023 Mar;33(2):220-233. doi: 10.1080/10543406.2022.2108826. Epub 2022 Aug 10. J Biopharm Stat. 2023. PMID: 35946934

9

Novel 3-arm wait-list controlled trial designs together with mixed-effects analysis improve precision of treatment effect estimators.

Ma X, Cheung YB. Ma X, et al. J Biopharm Stat. 2025 Jan 2;35(1):70-84. doi: 10.1080/10543406.2023.2275755. Epub 2023 Nov 6. J Biopharm Stat. 2025. PMID: 37929703

10

Estimation of trajectory of protective efficacy in infectious disease prevention trials using recurrent event times.

Cheung YB, Ma X, Lam KF, Yung CF, Milligan P. Cheung YB, et al. Among authors: ma x. Stat Med. 2024 Apr 30;43(9):1759-1773. doi: 10.1002/sim.10049. Epub 2024 Feb 23. Stat Med. 2024. PMID: 38396234

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