Lightnews — Scholar-powered news

Ghazaleh Dashti @ghazalehd.bsky.social · 7d

Such a well-deserved recognition of your brilliant work!✨

Reposted by Ghazaleh Dashti

Margarita Moreno-Betancur @margaritamb.bsky.social · 13d

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

5 15

Reposted by Ghazaleh Dashti

Margarita Moreno-Betancur @margaritamb.bsky.social · 28d

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

2 7 20

Reposted by Ghazaleh Dashti

Margarita Moreno-Betancur @margaritamb.bsky.social · Apr 23

Recording of my talk @causalab.bsky.social on using m-DAGs to guide the treatment of missing data now available 👇 #EpiSky #CausalSky

CAUSALab @causalab.bsky.social · Apr 22

Check out the last Methods Series talk now on YouTube:
youtu.be/QuQnZ4don54?...

CAUSALab @causalab.bsky.social · Apr 8

2 weeks away!

@margaritamb.bsky.social (Murdoch Children's Research Institute, University of Melbourne) continues the 2025 Methods Series @ki.se.

📆 April 22, 2025
⏰ 13.00 CEST/7.00 ET
📍 All Methods Series talks virtual

Register now 👇
stats.sender.net/forms/e7JD1d...
#publichealth #causalinference

10 22

Reposted by Ghazaleh Dashti

Margarita Moreno-Betancur @margaritamb.bsky.social · Jul 10

2/ The methodology uses interventional effects mapped to a “target trial” assessing the treatment strategies of interest, as proposed here tinyurl.com/yztb2hxs

Mediation effects that emulate a target randomised trial: Simulation-based evaluation of ill-defined interventions on multiple mediators - Margarita Moreno-Betancur, Paul Moran, Denise Becker, George ...

Many epidemiological questions concern potential interventions to alter the pathways presumed to mediate an association. For example, we consider a study that i...

tinyurl.com

1 3 3

Reposted by Ghazaleh Dashti

Clinical Epi & Biostatistics Unit (CEBU) @cebu-melbourne.bsky.social · Jul 10

🚨New method! So proud to see work led by @cttc101.bsky.social w/ @margaritamb.bsky.social @ghazalehd.bsky.social now available as an R package 📦
A powerful tool for estimating intervention effects via multiple mediators w/real examples to guide you!
Check it out ⬇️
#epitwitter #causaltwitter #rstats

Margarita Moreno-Betancur @margaritamb.bsky.social · Jul 10

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

4 8

Reposted by Ghazaleh Dashti

Margarita Moreno-Betancur @margaritamb.bsky.social · Jul 10

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

1 12 30

Ghazaleh Dashti @ghazalehd.bsky.social · May 1

@margaritamb.bsky.social @cebu-melbourne.bsky.social

Ghazaleh Dashti @ghazalehd.bsky.social · May 1

📢 New Commentary: We discuss how analytic choices impact interpretation of studies on socioeconomic health inequities. We review 1) descriptive analogues of causal estimands (à la Young et al) with competing events; 2) timescale choice; and 3) covariate adjustment.
👉 academic.oup.com/aje/advance-...

Invited commentary: Descriptive social epidemiology: putting the question before the methods

Abstract. In studies describing socioeconomic inequities in health outcomes, the choice of estimand and the planned analytic approach are central to the in

academic.oup.com

1 7 13

Reposted by Ghazaleh Dashti

Margarita Moreno-Betancur @margaritamb.bsky.social · Apr 15

Looking forward to speaking at the CAUSALab methods seminar series next week! 👇

CAUSALab @causalab.bsky.social · Apr 8

2 weeks away!

@margaritamb.bsky.social (Murdoch Children's Research Institute, University of Melbourne) continues the 2025 Methods Series @ki.se.

📆 April 22, 2025
⏰ 13.00 CEST/7.00 ET
📍 All Methods Series talks virtual

Register now 👇
stats.sender.net/forms/e7JD1d...
#publichealth #causalinference

Margarita Moreno-Betancur April 22 Methods Series talk, "Using missingness directed acyclic graphs (m-DAGs) to depict assumptions and guide the choice of method for handling missing data."

1 6 15

Ghazaleh Dashti @ghazalehd.bsky.social · Apr 2

@margaritamb.bsky.social @julieasimpson50.bsky.social

@cebu-melbourne.bsky.social

2

Ghazaleh Dashti @ghazalehd.bsky.social · Apr 2

📣 📣NEW PAPER providing guidance on best practice for using multiple imputation when estimating interventional mediation effects, considering missingness mechanism, multiple imputation model specification, & variance estimation
#CausalSky #EpiSky

Read more 👇🏽
journals.lww.com/epidem/abstr...

Handling multivariable missing data in causal mediation... : Epidemiology

miologic studies. However, guidance is lacking on best practice for using multiple imputation when estimating interventional mediation effects, specifically regarding the role of missingness mechanism...

journals.lww.com

1 9 15

Reposted by Ghazaleh Dashti

Peter Tennant @pwgtennant.bsky.social · Mar 26

"Using missingness directed acyclic graphs (m-DAGs) to guide the treatment of multivariable missing data in epidemiological studies"

Don't miss the next #CIIG seminar with @margaritamb.bsky.social on 7th April 2025 at *9am* BST!

Register at: turing-uk.zoom.us/meeting/regi...

#EpiSky #CausalSky

Advert for next Causal Inference Interest Group seminar. "Using missingness directed acyclic graphs (m-DAGs) to guide the treatment of multivariable missing data in epidemiological studies" with Margarita Moreno Betancur on 7th April 2025 at 9am BST.

19 43

Reposted by Ghazaleh Dashti

Clinical Epi & Biostatistics Unit (CEBU) @cebu-melbourne.bsky.social · Mar 12

Our next Introduction to Biostatistics course will take place over 5 half days 9am -12.30pm on 24-28 March 2025 at @MCRI_for_kids. Read more and register here: www.mcri.edu.au/research/res... Reduced rates available for internal and LMIC participants, reach out: [email protected]

Introduction to Biostatistics - Murdoch Children's Research Institute

www.mcri.edu.au

1 1

Reposted by Ghazaleh Dashti

ViCBiostat @vicbiostat.bsky.social · Feb 27

Seminar announcement🗣️

Prof Kelley Kidwell (Uni of Michigan): SMARTer Trials: Integrating Patient Treatment Preferences for Pragmatic Multi-Stage Trial Design & Analyses

27 Mar, 9:30am AEDT
Online + in person @ Monash SPHPM, Melbourne

Details - www.vicbiostat.org.au/seminars

1 1

Reposted by Ghazaleh Dashti

Clinical Epi & Biostatistics Unit (CEBU) @cebu-melbourne.bsky.social · Feb 25

Huge congratulations to our co-director @margaritamb.bsky.social for receiving an #NHMRC investigator grant to further her research work in #causalinference research !! 🥂🎉

Margarita Moreno-Betancur @margaritamb.bsky.social · Feb 24

Thrilled to have received this funding for my causal inference research program - with my amazing team we shall continue to advance methods and provide expertise in this key area for another 5 years!!! 🥳☺️ #CausalSky #EpiSky

ViCBiostat @vicbiostat.bsky.social · Feb 24

Exciting Monday news with two of our brilliant researchers awarded NHMRC Investigator Grants 🎊

Congratulations Margarita Moreno-Betancur @margaritamb.bsky.social and Julie Simpson @julieasimpson50.bsky.social

More:
www.vicbiostat.org.au/news

@mischhub.bsky.social @cebu-melbourne.bsky.social

1 4

Reposted by Ghazaleh Dashti

ViCBiostat @vicbiostat.bsky.social · Feb 24

Exciting Monday news with two of our brilliant researchers awarded NHMRC Investigator Grants 🎊

Congratulations Margarita Moreno-Betancur @margaritamb.bsky.social and Julie Simpson @julieasimpson50.bsky.social

More:
www.vicbiostat.org.au/news

@mischhub.bsky.social @cebu-melbourne.bsky.social

News

www.vicbiostat.org.au

1 3 13

Ghazaleh Dashti @ghazalehd.bsky.social · Feb 24

Massive congratulations! Incredibly well-deserved!!! 🤸🏽‍♂️🎉🥳

1

Reposted by Ghazaleh Dashti

Margarita Moreno-Betancur @margaritamb.bsky.social · Feb 24

Thrilled to have received this funding for my causal inference research program - with my amazing team we shall continue to advance methods and provide expertise in this key area for another 5 years!!! 🥳☺️ #CausalSky #EpiSky

ViCBiostat @vicbiostat.bsky.social · Feb 24

Exciting Monday news with two of our brilliant researchers awarded NHMRC Investigator Grants 🎊

Congratulations Margarita Moreno-Betancur @margaritamb.bsky.social and Julie Simpson @julieasimpson50.bsky.social

More:
www.vicbiostat.org.au/news

@mischhub.bsky.social @cebu-melbourne.bsky.social

News

www.vicbiostat.org.au

8 3 19

Reposted by Ghazaleh Dashti

ViCBiostat @vicbiostat.bsky.social · Feb 12

Another successful workshop from our missing data methods research group ✔️Led by Margarita Moreno-Betancur @margaritamb.bsky.social, with presenters Kate Lee, Ghazaleh Dashti @ghazalehd.bsky.social, Jiaxin Zhang, Cattram Nguyen, Melissa Middleton and Jessica Xu.

Thank you to all who came along!

2 4

Reposted by Ghazaleh Dashti

Clinical Epi & Biostatistics Unit (CEBU) @cebu-melbourne.bsky.social · Feb 11

Our research methods and software training course timetable for 2025 is out! check it out here 👇 www.mcri.edu.au/research/res...

CEBU course timetable - Murdoch Children's Research Institute

2025 CEBU course timetable at MCRI. Enhance your research skills with our short courses in clinical research methods, data management, and statistical analysis.

www.mcri.edu.au

3 2

Reposted by Ghazaleh Dashti

ViCBiostat @vicbiostat.bsky.social · Feb 10

We're off and away with Summer School 2025!

Jonathan Sterne @jonathanasterne.bsky.social is leading our Advanced causal inference course, ably assisted by tutors Ghazaleh Dashti @ghazalehd.bsky.social, Marnie Downes, Daisy Shepherd and Jiaxin Zhang from CEBU.

3 6

Ghazaleh Dashti @ghazalehd.bsky.social · Jan 30

@margaritamb.bsky.social

Ghazaleh Dashti @ghazalehd.bsky.social · Jan 30

NEW COMMENTARY in Epidemiology on causal estimands in studies of pre-diagnostic exposures and cancer survival

#EpiSkye #CausalSky

journals.lww.com/epidem/citat...

Pre-diagnostic exposures and cancer survival: Can a... : Epidemiology

An abstract is unavailable. This article is available as a PDF only.

journals.lww.com

1 5 10

Reposted by Ghazaleh Dashti

Rushani Wijesuriya @rush-099.bsky.social · Jan 27

Hot off the press! 📣📣In this tutorial we illustrate available multiple imputation approaches for handling longitudinal data including when they are clustered within higher level clusters. A reproducible example with R and Stata code provided! #OpenAccess

onlinelibrary.wiley.com/doi/10.1002/...

Multiple Imputation for Longitudinal Data: A Tutorial

Longitudinal studies are frequently used in medical research and involve collecting repeated measures on individuals over time. Observations from the same individual are invariably correlated and thu....

onlinelibrary.wiley.com

5 64 150