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  2. On Sensitivity Value of Pair-Matched Observational Studies

    https://www.statslab.cam.ac.uk/~qz280/publication/sensitivity-value/slides.pdf
    3 Jun 2024: Can test the sharpnull hypothesis by e.g. Wilcoxon’s signed rank test. ... I When Γ > 1: Rosenbaum obtained lower and upper bounds ofthe p-value of any signed score test.
  3. Machine Learning meets Biostatistics IIA crash course on Causal ...

    https://www.statslab.cam.ac.uk/~qz280/talk/ccaim-summer-school-2022/slides.pdf
    3 Jun 2024: How do we test XJ XK | XL in DAG models?
  4. Small Data, Big Time—A retrospect of the first weeks of COVID-19

    https://www.statslab.cam.ac.uk/~qz280/publication/covid-19-retrospect/paper.pdf
    3 Jun 2024: This means that evidence from theprevious commercial tests, which had already identified a SARS-like coronavirus a week earlier, could notbe relied on in the official investigations. ... No new cases were announced before January 17, because the local
  5. Practical: Randomization inference

    https://www.statslab.cam.ac.uk/~qz280/teaching/siscer-2023/S1.pdf
    3 Jun 2024: Why?• How can you "invert" the randomization tests to obtain an interval estimator of the treatment. ... On the other hand, the randomization test is based on the randomization introduced by theexperimenter.
  6. SISCER Module 12 Lecture 1: Randomization inference

    https://www.statslab.cam.ac.uk/~qz280/teaching/siscer-2023/L1.pdf
    3 Jun 2024: It turns out that Fisher’s exact test is also valid for this problem. ... Example: Fisher's exact test. Example: Stepped-wedge design. Example: Matched observational studies.
  7. https://www.statslab.cam.ac.uk/~qz280/tag/fisher/index.xml

    https://www.statslab.cam.ac.uk/~qz280/tag/fisher/index.xml
    3 Jun 2024: or I would call them “tests of unusualness” or “tests of aberrance” or “test of fishiness”) as tests where the treatment (or any variable, for ... randomization tests creates a “control group of numbers” to
  8. BETS: The dangers of selection bias in early analyses ...

    https://www.statslab.cam.ac.uk/~qz280/talk/ghent-2021/slides.pdf
    3 Jun 2024: False negative test: Her first test was negative. A few days later she wastested again and the result came back positive. ... The principle is to only include cases as Wuhan-exported that pass a “beyond areasonable doubt” test.
  9. SISCER Module 12 Lecture 6: Negative Controls and…

    https://www.statslab.cam.ac.uk/~qz280/teaching/siscer-2023/L6.pdf
    3 Jun 2024: 2020). Can labor market policies reduce deaths ofdespair? Journal of health economics, 74:102372.
  10. CAUSAL INFERENCE Part III / Michaelmas 2023Example Sheet 2 ...

    https://www.statslab.cam.ac.uk/~qz280/teaching/causal-2023/E2.pdf
    3 Jun 2024: Read the abstract andthe section “Tests of Initial a Priori Model” (page 649–651) in the paper titled “Causal Ordering ofAcademic Self-Concept and Academic Achievement: A Multiwave, Longitudinal Panel Analysis”
  11. Using sparsity to overcome unmeasured confounding:Two examples…

    https://www.statslab.cam.ac.uk/~qz280/talk/mrc-bsu-2019/slides.pdf
    3 Jun 2024: Related problem: Gene colocalization test. Stylized statistical problem(γ̂. Γ̂. ) N. (( ... A standard test uses (Plagnol et al, 2009, Biostatistics). 2l(β̂) d χ2p1 under the above model.

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