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cttc101.bsky.social
Tong Chen
@cttc101.bsky.social
55 followers 87 following 6 posts
Biostatistician @CEBU MCRI in Melbourne Australia
Causal inference #causalsky + Causal machine learning + Design and analysis of complex sampling + #rstats
tongchen.netlify.app
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Reposted by Tong Chen
myramcguinness.bsky.social
This week! Prof Ian Marschner from the NHMRC Clinical Trials Centre will be presenting the @vicbiostat.bsky.social seminar on Confidence distributions.

All welcome online or in person.

Friday 21 November 9:30am AEDT, Monash SPHPM.

www.vicbiostat.org.au/event/confid...
Confidence distributions: new tools to design, adapt and analyse clinical trials
Confidence distributions provide a holistic s
www.vicbiostat.org.au
November 16, 2025 at 9:54 PM
Reposted by Tong Chen
tslumley.bsky.social
Double machine learning fits an adjustment model from a confounder set using correlation and so breaks down when offered variables that have good correlation just *because* they aren't suitable adjustment variables
#IWouldSimplyNotIncludeEndogenousVariables
November 14, 2025 at 9:39 PM
Reposted by Tong Chen
jssam.bsky.social
@bsky.app ISSUE 4 IS OUT! with 3 survey methods and 2 statistics articles. We've got a backlog of 20 accepted articles -- some in preprint now -- but we're seeking more manuscripts for 2026, especially stat papers. So please consider submitting your next manuscript to JSSAM. #AAPOR
November 12, 2025 at 11:17 PM
Reposted by Tong Chen
myramcguinness.bsky.social
#ViCBiostat Summer School 13-20 Feb 2026

#Causal inference
#Estimands in trials
#Cluster randomised trials
Advanced #meta-analysis

In Melbs and online.
More details to come.
www.vicbiostat.org.au
Flyer saying Save the date for the 2025 ViCBiostat Summer School
November 12, 2025 at 4:12 AM
Reposted by Tong Chen
jesskasza.bsky.social
Another great ViCBiostat summer school to look forward to! I can promise a couple of excellent days on cluster randomised trials from the Cluster Cluster... with a couple of extra special guests soon to be announced!
vicbiostat.bsky.social ViCBiostat @vicbiostat.bsky.social · 6d
Mark your diaries! The ViCBiostat Summer School returns from 13-20 Feb 2026, in Melbourne and online.
Courses include causal inference, cluster randomised trials, meta-analysis and the estimand framework.
Further details TBA shortly - sign up to our mailing list at www.vicbiostat.org.au
#statistics
November 12, 2025 at 4:40 AM
Reposted by Tong Chen
melmiddleton.bsky.social
☕🥐 One week to go! Don’t miss the Australian Trials Methodology Conference on 20 Nov — your dose of fresh ideas in clinical trial design!

Come early for the Career Development Breakfast to start your day right with coffee, croissants & career chat!

👉 Full program: bit.ly/4qM3HKp
#atmc25
bit.ly
November 9, 2025 at 11:24 PM
Reposted by Tong Chen
cebu-melbourne.bsky.social
Strengthen your research skills in observational studies!

📅 27–31 Oct 2025 | 💻 Online via Zoom
Reduced rates available for selected participants- more details and registration👇
🔗 www.mcri.edu.au/research/res...
Observational Studies: Modern concepts & analytic methods - Murdoch Children's Research Institute
www.mcri.edu.au
August 28, 2025 at 3:32 AM
Reposted by Tong Chen
tslumley.bsky.social
Statisticians of Melbourne and environs!
I will be giving a talk (the Belz Lecture) next Monday, 2pm, Melbourne Uni.

The title is "Laws and Orders"

The lecture is free but they want you to sign up. There's also an early career stats showcase with lunch that costs
www.statsoc.org.au/event-6288035
October 21, 2025 at 7:09 AM
cttc101.bsky.social
This week! Don’t miss Prof Eric Tchetgen Tchetgen’s @vicbiostat.bsky.social seminar on proximal causal inference!
October 20, 2025 at 10:57 PM
Reposted by Tong Chen
myramcguinness.bsky.social
Join the October @vicbiostat.bsky.social seminar to hear Prof Eric Tchetgen Tchetgen speak on proximal causal inference.

All welcome online 23 October.

More info:
www.vicbiostat.org.au/event/fortif...

#casualinference #biostatistics @upenncgh.bsky.social
Fortified Proximal Causal Inference with many imperfect negative controls
Abstract: Causal inference from observational
www.vicbiostat.org.au
October 7, 2025 at 11:38 PM
Reposted by Tong Chen
margaritamb.bsky.social
NEW PAPER!!! "Causal Machine Learning Methods and Use of Cross‐Fitting in Settings With High‐Dimensional Confounding"

led by Susie Ellul, with Stijn Vansteelandt & John Carlin
Published in Stats in Med

Check it out 👇
onlinelibrary.wiley.com/doi/10.1002/...

#EpiSky #CausalSky
Causal Machine Learning Methods and Use of Cross‐Fitting in Settings With High‐Dimensional Confounding
Observational epidemiological studies commonly seek to estimate the causal effect of an exposure on an outcome. Adjustment for potential confounding bias in modern studies is challenging due to the p...
onlinelibrary.wiley.com
September 25, 2025 at 2:35 AM
Reposted by Tong Chen
austrim-cre.bsky.social
Join us at the 3rd biennial Australian Trials Methodology Conference as we explore "Better trials through better methods"

Crown Promenade, Melbourne (+ online access options)
20/11/25

Early-bird registration ends 26/9

www.atmc25.com
#ClinicalTrials #Biostatistics
AusTriM Conference flyer
September 15, 2025 at 3:59 AM
Reposted by Tong Chen
margaritamb.bsky.social
NEW PAPER! (in press in EPIDEMIOLOGY)

Have you wondered:
- How to specify a target trial: as an ideal trial or something else?
- What biases do target trial emulations and actual RCTs share?
- How does it all relate to potential outcomes?

Read here! 👉 arxiv.org/abs/2405.10026
#EpiSky #CausalSky
The ideal trial: defining causal estimands that balance relevance and feasibility in target trial emulations and actual randomized trials
Causal inference is the goal of randomized trials and many observational studies. The first step in a formal causal inference framework is to define the causal estimand, and in both types of study thi...
arxiv.org
September 9, 2025 at 11:23 PM
Reposted by Tong Chen
myramcguinness.bsky.social
We are looking forward to hearing @jonathan-bartlett.bsky.social speak on the G-formula for causal inference using synthetic multiple imputation at the July @vicbiostat.bsky.social seminar!

All welcome online Thursday 24th, 4:00pm Aus EST (7:00am UK time).

www.vicbiostat.org.au/event/g-form...
G-formula for causal inference using synthetic multiple imputation
G-formula is a popular approach for estimatin
www.vicbiostat.org.au
July 23, 2025 at 2:04 AM
Reposted by Tong Chen
profjamescurran.bsky.social
For those of you who don't know what Ross and Robert look like..a couple of photos from my collection. I'm sure I have better ones somewhere. The BW is from 1994 when our department formally became separate from Mathematics.
Ross Ihaka - Coinventor of R Ross Ihaka and Robert Gentleman circa 1994
July 19, 2025 at 10:01 PM
Reposted by Tong Chen
mehr.nz
it's wild that R, the ubiquitous statistical computing language, was co-created by a Māori prof (Ross Ihaka) — and yet the vast majority of scientists who use R don't know

this is like inventing the toaster. possibly the largest impact of a single member of an indigenous community on modern science
December 14, 2023 at 10:35 AM
Reposted by Tong Chen
margaritamb.bsky.social
1/ NEW R PACKAGE! For estimating the impact of potential interventions on multiple mediators in countering exposure effects (led by @cttc101.bsky.social)

- Paper👉 tinyurl.com/ye26jsps
- Package👉 tinyurl.com/yuh4kens

Thread shows published examples of how the method can be used! #EpiSky #CausalSky
tinyurl.com
July 10, 2025 at 1:30 AM
Reposted by Tong Chen
arxiv-stat-me.bsky.social
Zhehao Zhang, Thomas S. Richardson
Individual Treatment Effect: Prediction Intervals and Sharp Bounds
https://arxiv.org/abs/2506.07469
June 10, 2025 at 6:33 AM
Reposted by Tong Chen
margaritamb.bsky.social
NOW PUBLISHED! Featured article + 6 Commentaries + Rejoinder: “On the Uses and Abuses of Regression Models: A Call for Reform of Statistical Practice and Teaching” with my colleague John Carlin
tinyurl.com/2z2tmkhh
@cebu-melbourne.bsky.social @vicbiostat.bsky.social #EpiSky #CausalSky #StatsSky
Rejoinder to Commentaries on: On the Uses and Abuses of Regression Models: A Call for Reform of Statistical Practice and Teaching
Click on the article title to read more.
onlinelibrary.wiley.com
July 2, 2025 at 1:56 AM
Reposted by Tong Chen
triadsou.bsky.social
How hazard ratios can mislead and why it matters in practice. Elise Dumas, Mats J. Stensrud. European Journal of Epidemiology. link.springer.com/article/10.1...
How hazard ratios can mislead and why it matters in practice - European Journal of Epidemiology
Hazard ratios are routinely reported as effect measures in clinical trials and observational studies. However, many methodological works have raised concerns about the interpretation of hazard ratios ...
link.springer.com
June 29, 2025 at 12:29 PM
Reposted by Tong Chen
usatoday.com
Yang Hansen may not have been on the radar for some, but his tall frame quickly caught the eye of many as he made his way toward the NBA draft stage.
Who is Yang Hansen? Meet 2025 NBA Draft pick heading to Portland Trail Blazers
Yang Hansen may not have been on the radar for some, but his tall frame quickly caught the eye of many as he made his way toward the NBA draft stage.
bit.ly
June 26, 2025 at 5:00 AM
Reposted by Tong Chen
masalmon.eu
Quack quack! "duckplyr fully joins the tidyverse!"

Like a duck to water 😉

www.tidyverse.org/blog/2025/06...

#RStats
duckplyr fully joins the tidyverse!
duckplyr 1.1.0 is on CRAN! A drop-in replacement for dplyr, powered by DuckDB for speed. It is the most dplyr-like of dplyr backends.
www.tidyverse.org
June 19, 2025 at 3:22 PM
Reposted by Tong Chen
tslumley.bsky.social
I'm giving a midnight seminar for IASS next Wednesday night
isi-iass.org/home/events/...
From their point of view it's just nicely after lunch: 2pm in CEST
IASS Webinar 53: Multiphase sampling: design, analysis, computation | International Association of Survey Statisticians (IASS)
isi-iass.org
June 19, 2025 at 12:52 AM
Reposted by Tong Chen
tslumley.bsky.social
I'm giving two short courses at the (online) Summer Institute run by the Biostat dept in Seattle

As usual, on complex surveys and R: si.biostat.washington.edu/institutes/s...

New! with Pam Shaw, on two-phase designs in health research
si.biostat.washington.edu/institutes/s...
Analyzing Data from Complex Surveys | Summer Institutes
si.biostat.washington.edu
June 12, 2025 at 8:43 PM
Reposted by Tong Chen
mickael.canouil.fr
Streamline your workshops with GitHub Codespaces & Quarto (@posit.co) !

Skip setup headaches and dive into live, interactive sessions that make teaching a breeze.
Discover how in our latest guide.

quarto.org/docs/blog/po...

#GitHubCodespaces #Quarto #Python #JuliaLang #RStats #Workshop
How to use GitHub Codespaces to simplify your Quarto workshops – Quarto
In this post, I’ll teach you the basics of GitHub Codespaces and how to use them to make it easier to teach using Quarto.
quarto.org
May 19, 2025 at 6:47 PM