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Qingyuan Zhao
https://www.statslab.cam.ac.uk/~qz280/3 Jun 2024: 2024-02-08 2:00 PM — 3:00 PM London School of Economics and Political Science (LSE). -
CAUSAL INFERENCE Part III / Michaelmas 2023Example Sheet 3 ...
www.statslab.cam.ac.uk/~qz280/teaching/causal-2023/E3.pdf3 Jun 2024: 1. Γ πi/(1 πi)πn1i/(1 πn1i). Γ, i [n1]. For the sign test (see ES1 Q8b), derive a “upper bounding” asymptotic randomization p-value for thismodel. -
Testimonials from Our Clients | The Statistics Clinic
www.statslab.cam.ac.uk/clinic/testimonials.html15 Jul 2024: Heather, Department of Economics). Thank you, what a great free service for us "lost" biologists to be able to more accurately understand our data and hopefully avoid wrong interpretations. -
Dr Qingyuan Zhao | Statistical Laboratory
www.statslab.cam.ac.uk/person/qz28015 Jul 2024: FR Guo, Q Zhao. (2023). (link to publication). What is a Randomization Test? -
Publications | Statistical Laboratory
www.statslab.cam.ac.uk/publications?page=4815 Jul 2024: 21,. 240. (doi: 10.1214/10-AAP693). Etanercept, infliximab and adalimumab for the treatment of psoriatic arthritis: a systematic review and economic evaluation. ... Arxiv preprint arXiv:1104.0338. (2011). Etanercept, infliximab and adalimumab for the -
Practical: Matching/Weighting and Sensitivity Analysis
www.statslab.cam.ac.uk/~qz280/teaching/siscer-2023/P2.pdf3 Jun 2024: Remark: For example, we can apply the Wilcoxon signed rank test, as follows. -
STATISTICAL MODELLING Part IIC, Michaelmas 2021Practical 1:…
www.statslab.cam.ac.uk/~qz280/teaching/modelling-2022/P1.pdf3 Jun 2024: To make sure that neither of them is more lenient than the other,they want to test whether their average marks are equal. -
Mendelian Randomization: Old and New Insights Qingyuan Zhao…
www.statslab.cam.ac.uk/~qz280/talk/epfl-2021/slides.pdf3 Jun 2024: Randomization tests to find causal variants (Spielman, McGinnis, &Ewens, 1993; Bates et al., 2020). ... I Randomization test for the sharp null H0 : Y (1) Y (0) = β.I Key idea: Under H0, Y (0) = Y βX. -
MR Data Challenge 2019 — The role of lipoprotein subfractions in…
www.statslab.cam.ac.uk/~qz280/talk/mr-raps-markdown/report.pdf3 Jun 2024: The mr.raps package further implements diagnostics and falsification test of the MR analysis. ... Estimated overdispersion variance: 1.67e-08, standard error: 8.61e-09, p-value: 0.052. ## ANOVA test: are the weights and residuals independent? ## -
www.statslab.cam.ac.uk/~qz280/author/yao-zhang/index.xml
www.statslab.cam.ac.uk/~qz280/author/yao-zhang/index.xml3 Jun 2024: 00:00 0000 https://www.statslab.cam.ac.uk/qz280/publication/marginal-sensitivity-semiparametric/ What is a randomization test? ... tests https://www.statslab.cam.ac.uk/qz280/publication/multiple-crts/ Thu, 22 Apr 2021 09:27:32 0000 -
Multiple conditional randomization tests
www.statslab.cam.ac.uk/~qz280/talk/mcp-2022/slides.pdf3 Jun 2024: This is a permutation test, although resampling is not needed. Qingyuan Zhao (University of Cambridge) Multiple conditional randomization tests August 31, 2022 @ MCP Conference 14 / 26. ... Permutation tests for treatment effect in randomized experiments. -
Selective Randomization Inference for Adaptive Experiments | Qingyuan …
https://www.statslab.cam.ac.uk/~qz280/publication/selective-randomization/3 Jun 2024: In a nutshell, our approach applies conditional post-selection inference to randomization tests. ... Lastly, we demonstrate our method and compare it with other randomization tests using synthetic and real-world data. -
Selecting and ranking individualized treatment rules with…
www.statslab.cam.ac.uk/~qz280/talk/selective-inference-webinar-2021/slides.pdf3 Jun 2024: Better alternative: reduce the number of tests using a planning sample (Heller et al. ... Objective 3: Selecting the positive ITRs. Simply needs to test the hypotheses H0i : r0 6Γ ri, i = 1,. -
A constructive approach to selective risk control | Qingyuan Zhao
https://www.statslab.cam.ac.uk/~qz280/publication/selective-risk/3 Jun 2024: the null but also at other locations for free; (2) in the context of permutation tests, the BH procedure with exact permutation p-values can be well approximated by a procedure -
Comment on “Causal inference using invariant prediction” Qingyuan…
www.statslab.cam.ac.uk/~qz280/publication/invariant-prediction-comment/comment.pdf3 Jun 2024: We would welcomethe authors’ comments on this summary. To test the empirical performance of ICP, we use the authors’ software ona protein signaling network dataset. ... c) without enough interventions, the set of causal parentsis unidentifiable, and -
How infectious was COVID-19 when it first circulated in Wuhan?
www.statslab.cam.ac.uk/~qz280/talk/corpus-masterclass-2022/slides.pdf3 Jun 2024: What happened? PCR tests were being developed and distributed. Evidence elsewhere1 COVID-19’s pathogen—SARS-CoV-2—is far from the first human coronavirus. -
Statistical modellingLecturer: Alberto J. Coca…
www.statslab.cam.ac.uk/~qz280/teaching/modelling-2022/notes_3Dec19.pdf3 Jun 2024: Often we want to test whether a given group of variables is significant. ... One sensible way of proceeding is to construct a generalised likelihood ratio test. -
Mendelian Randomization: Old and New Insights Qingyuan Zhao…
www.statslab.cam.ac.uk/~qz280/talk/penn-biostat-2021/slides.pdf3 Jun 2024: Randomization tests to find causal variants (Spielman, McGinnis, &Ewens, 1993; Bates et al., 2020). ... I Randomization test for the sharp null H0 : Y (1) Y (0) = β.I Key idea: Under H0, Y (0) = Y βX. -
SISCER Module 12 Lecture 3: Sensitivity analysis
www.statslab.cam.ac.uk/~qz280/teaching/siscer-2023/L3.pdf3 Jun 2024: I By further assuming no unmeasured confounders Ai Yi (a) | Xi for all a,randomization tests can be constructed as in randomized experiments. -
Probability J.R. Norris January 22, 2024 1 Contents 1 ...
www.statslab.cam.ac.uk/~james/Lectures/p.pdf22 Jan 2024: A test is performed on arandomly chosen person, which is known empirically to give a positive result for 98% ofpeople affected by the condition and 1% of those unaffected. ... Suppose the test is positive.What is the probability that the chosen person -
PathGPS 1 PathGPS: Discover shared genetic architecture using GWAS ...
www.statslab.cam.ac.uk/~qz280/publication/pathgps/paper.pdf3 Jun 2024: regard the SNPs with at least one significant marginal association test as signal SNPs (1200. ... in total). We regard the SNPs with no significant marginal association tests as noise SNPs. -
Lecture Notes on Statistical Modelling Qingyuan Zhao December 2, ...
www.statslab.cam.ac.uk/~qz280/teaching/modelling-2022/notes.pdf3 Jun 2024: 112.3.3 Confidence sets. 112.3.4 Hypothesis tests and analysis of variance. 12. ... The level-α likelihood ratio test rejects H0 : β1 = 0 when F > Fpp0,np(α). -
CAUSAL INFERENCE - Example Sheet 2 Solutions J. Hera ...
www.statslab.cam.ac.uk/~qz280/teaching/causal-2023/S2.pdf3 Jun 2024: The author agrees and sets this coecientto 0.9. This issue is discussed in the last paragraph of the section “Tests of initial a priorimodels” and in section “Sensitivity analysis”. -
On Sensitivity Value of Pair-Matched Observational Studies
www.statslab.cam.ac.uk/~qz280/publication/sensitivity-value/slides.pdf3 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. -
Machine Learning meets Biostatistics IIA crash course on Causal ...
www.statslab.cam.ac.uk/~qz280/talk/ccaim-summer-school-2022/slides.pdf3 Jun 2024: How do we test XJ XK | XL in DAG models? -
Publications | Statistical Laboratory
www.statslab.cam.ac.uk/publications?page=4415 Jul 2024: PharmacoEconomics. (2012). 23,. 853. (doi: 10.2165/00019053-200523080-00010). Incorporation of uncertainty in health economic modelling studies. ... M Nuijten. – PharmacoEconomics. (2012). 23,. 851. (doi: 10.2165/00019053-200523080-00009). -
How the Clinic Works | The Statistics Clinic
www.statslab.cam.ac.uk/clinic/service.html15 Jul 2024: Research. Show our clients novel, cutting edge methods that may be used to understand data better, make more precise predictions and test hypotheses more reliably. -
Small Data, Big Time—A retrospect of the first weeks of COVID-19
www.statslab.cam.ac.uk/~qz280/publication/covid-19-retrospect/paper.pdf3 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 -
Practical: Randomization inference
www.statslab.cam.ac.uk/~qz280/teaching/siscer-2023/S1.pdf3 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. -
SISCER Module 12 Lecture 1: Randomization inference
www.statslab.cam.ac.uk/~qz280/teaching/siscer-2023/L1.pdf3 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. -
www.statslab.cam.ac.uk/~qz280/publication/index.xml
www.statslab.cam.ac.uk/~qz280/publication/index.xml3 Jun 2024: qz280/publication/pathgps/ Wed, 04 May 2022 00:00:00 0000 https://www.statslab.cam.ac.uk/qz280/publication/pathgps/ What is a randomization test? ... 21 Jul 2021 00:00:00 0000 https://www.statslab.cam.ac.uk/qz280/publication/fda-comment-2021/ Multiple -
Bayesian Non-linear Statistical Inverse Problems
www.statslab.cam.ac.uk/~nickl/Site/__files/FINALBOOKPDF.pdf16 Jan 2024: The statistical intuition behind this algorithm is simple: We compute the new(conditionally Gaussian) proposal sm and perform a likelihood ratio test against theprevious position #m of the Markov chain. ... D m0ıN and log N."/ D cNı2N , c > 0; constant -
BETS: The dangers of selection bias in early analyses ...
www.statslab.cam.ac.uk/~qz280/talk/ghent-2021/slides.pdf3 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. -
1-dgk.dvi
www.statslab.cam.ac.uk/~grg/books/hammfest/1-dgk.pdf22 Mar 2024: Thiswas his skill in concocting the all but insoluble scholarship questions thatwere then in vogue (and which passed the test of acceptance only if theybaffled one’s fellow examiners). -
CAUSAL INFERENCE Part III / Michaelmas 2023Example Sheet 2 ...
www.statslab.cam.ac.uk/~qz280/teaching/causal-2023/E2.pdf3 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” -
SISCER Module 12 Lecture 6: Negative Controls and…
www.statslab.cam.ac.uk/~qz280/teaching/siscer-2023/L6.pdf3 Jun 2024: 2020). Can labor market policies reduce deaths ofdespair? Journal of health economics, 74:102372. -
Using sparsity to overcome unmeasured confounding:Two examples…
www.statslab.cam.ac.uk/~qz280/talk/mrc-bsu-2019/slides.pdf3 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. -
Dr Qingyuan Zhao | The Statistics Clinic
www.statslab.cam.ac.uk/clinic/person/qz28015 Jul 2024: 2023). (link to publication). What is a Randomization Test? Y Zhang, Q Zhao. – -
Publications | Statistical Laboratory
www.statslab.cam.ac.uk/publications?page=4615 Jul 2024: The Annals of Statistics. (2011). 39,. 2383. (doi: 10.1214/11-aos903). Probabilistic sensitivity analysis in health economics. ... 914. (doi: 10.1198/jasa.2011.tm11321). Economic Issues in Shared Infrastructures. C Courcoubetis, R Weber. – -
www.statslab.cam.ac.uk/~qz280/index.xml
www.statslab.cam.ac.uk/~qz280/index.xml3 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 -
Publications | Statistical Laboratory
www.statslab.cam.ac.uk/publications?page=4115 Jul 2024: 2013). 29,. 336. (doi: 10.1017/s0266462313000354). Modelling trigonometric seasonal components for monthly economic time series. ... I Hindrayanto, JAD Aston, SJ Koopman, M Ooms. – Applied Economics. -
www.statslab.cam.ac.uk/~qz280/author/qingyuan-zhao/index.xml
www.statslab.cam.ac.uk/~qz280/author/qingyuan-zhao/index.xml3 Jun 2024: tests https://www.statslab.cam.ac.uk/qz280/talk/mcp-2022/ Wed, 31 Aug 2022 13:45:00 0000 https://www.statslab.cam.ac.uk/qz280/talk/mcp-2022/ Confounder selection: ... 09:00:00 0000 https://www.statslab.cam.ac.uk/qz280/talk/fisher-2022/ What is a -
Publications | Statistical Laboratory
www.statslab.cam.ac.uk/publications?page=4915 Jul 2024: 2011). 191. (link to publication). Etanercept, infliximab and adalimumab for the treatment of psoriatic arthritis: A systematic review and economic evaluation. ... RH Wang, JAD Aston, CD Fuh. – Computational Economics. (2010). 36,. -
www.statslab.cam.ac.uk/~qz280/tag/freedman/index.xml
www.statslab.cam.ac.uk/~qz280/tag/freedman/index.xml3 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 -
BETS: The dangers of selection bias in early analyses ...
www.statslab.cam.ac.uk/~qz280/talk/yale-biostats-2020/slides.pdf3 Jun 2024: The principle is to only include cases as Wuhan-exported that pass a “beyond areasonable doubt” test. ... Variations of Assumption 3 (exponential growth) and Assumption 5 (stabletravel) are implemented to test sensitivity. -
MR Data Challenge 2019 — The role of lipoprotein subfractions in…
www.statslab.cam.ac.uk/~qz280/publication/mr-lipids/report.pdf3 Jun 2024: The mr.raps package further implements diagnostics and falsification test of the MR analysis. ... Estimated overdispersion variance: 1.67e-08, standard error: 8.61e-09, p-value: 0.052. ## ANOVA test: are the weights and residuals independent? ## -
MATHEMATICS OF MACHINE LEARNING Part IIExample Sheet 2 (of ...
www.statslab.cam.ac.uk/~rds37/teaching/machine_learning/Qu2.pdf20 Feb 2024: To decide the winner, the classifiers are applied to n new i.i.d.datapoints (the so-called test data). -
www.statslab.cam.ac.uk/~qz280/tag/philosophy/index.xml
www.statslab.cam.ac.uk/~qz280/tag/philosophy/index.xml3 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 -
Publications | Statistical Laboratory
www.statslab.cam.ac.uk/publications?page=6915 Jul 2024: 13,. 304. (doi: 10.1214/aoap/1042765670). Risk-adjusted sequential probability ratio tests: applications to Bristol, Shipman and adult cardiac surgery. ... 2003). Mutations and the probabilistic approach to incompatible paternity tests. AP Dawid, J -
www.statslab.cam.ac.uk/~qz280/tag/randomization-inference/index.xml
www.statslab.cam.ac.uk/~qz280/tag/randomization-inference/index.xml3 Jun 2024: 00 0000 https://www.statslab.cam.ac.uk/qz280/talk/imperial-2022/ Multiple conditional randomization tests https://www.statslab.cam.ac.uk/qz280/talk/mcp-2022/ Wed, 31 Aug 2022 ... 27 Jun 2022 17:10:00 0000 https://www.statslab.cam.ac.uk/qz280/talk/ims-2022
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