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BETS: The dangers of selection bias in early analyses ...
www.statslab.cam.ac.uk/~qz280/talk/ghent-2021/slides.pdf3 Jun 2024: Initial Date of first medical visit 23-Jan 6.5% NA. Confirmed Date confirmed 24-Jan. ... 2009)Statistics in Medicine, 28:2769–2784. Qingyuan Zhao (Stats Lab, Cambridge) BETS on COVID-19 June 15, 2021 24 / 41. -
Almost Exact Mendelian Randomization Qingyuan Zhao Statistical…
www.statslab.cam.ac.uk/~qz280/talk/eurocim-2023/slides.pdf3 Jun 2024: Fisher’s combination test 0.21. Two-stage least squares 0.02. Qingyuan Zhao (Cambridge) Almost Exact MR April 20, 2023 24 / 26. -
SISCER Module 12 Lecture 3: Sensitivity analysis
www.statslab.cam.ac.uk/~qz280/teaching/siscer-2023/L3.pdf3 Jun 2024: 0 g. 1-14 g. 15-24 g. >25 g. Ratio Difference. Lung cancer 0.07 0.47 0.86 1.66 23.71 1.59Other cancer 2.04 2.01 ... Then. M(. Γ) R(Γ) M(Γ). 24 / 26. Motivating example: Smoking and lung cancer Sensitivity analysis for matching Other methods under NUCA -
Simultaneous Hypothesis Testing using Internal Negative Controls…
www.statslab.cam.ac.uk/~qz280/publication/ranc/slides.pdf3 Jun 2024: The heuristic in Hung et al. (2014) corresponds to using λ = 1 or q = π, which is quitesensible!Qingyuan Zhao (Cambridge) Negative controls March 29 @ Penn 24 / 31. -
Multiple conditional randomization tests
www.statslab.cam.ac.uk/~qz280/talk/ims-2022/slides.pdf3 Jun 2024: Qingyuan Zhao (University of Cambridge) Multiple conditional randomization tests June 27, 2022 @ IMS Annual Meeting 24 / 26. -
Design: The Elusive Principle of Statistics
www.statslab.cam.ac.uk/~qz280/talk/oxford-2024/slides.pdf3 Jun 2024: Red (symptom onsets before January 24): 3.9 days (2.9–5.5). Original study: 6.4 days (5.8–7.1). ... Initial Date of first medical visit 23-Jan 6.5% NA. Confirmed Date confirmed 24-Jan. -
www.statslab.cam.ac.uk/~qz280/tag/infectious-diseases/index.xml
www.statslab.cam.ac.uk/~qz280/tag/infectious-diseases/index.xml3 Jun 2024: based on symptom onset data https://www.statslab.cam.ac.uk/qz280/publication/covid-19-generation-interval-comment/ Fri, 24 Jul 2020 16:08:19 0000 ... uk/qz280/publication/covid-19-generation-interval-comment/ COVID-19 (project page) -
Mendelian randomization
www.statslab.cam.ac.uk/~qz280/talk/mr-tutorial/slides.pdf3 Jun 2024: β̂IVW = Mean(β̂j,weights =1/σ2j ). 2. Weighted median:. β̂WMED = Median(β̂j,weights =1/σ2j ). 3. MR-Egger regression:. β̂Egger = lm(Γ̂j γ̂j,weights =1/σ2j ). 24/40. Weak instrument biasI -
SISCER Module 12 Lecture 2: Matching for Cohort Studies
www.statslab.cam.ac.uk/~qz280/teaching/siscer-2023/L2.pdf3 Jun 2024: multipleinference. 24 / 29. Observational studies and causal inference Basics of matching Various issues and techniques in matching References. -
Selecting and ranking individualized treatment rules with…
www.statslab.cam.ac.uk/~qz280/talk/selective-inference-webinar-2021/slides.pdf3 Jun 2024: Take-home message: Precision medicine or Jenga? Qingyuan Zhao (Stats Lab, Cambridge) ITRs with unmeasured confounders January 14, 2021 24 / 25.
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