
Oncology RWE in pharma, PhD from @SBSatEd || ex @EdinUniUsher/@cardiffuni/@ugaecology || Health, statistics, epi, wood mice 🐭, #rstats
Barcelona, Cataluña
Joined July 2012
- Tweets1.5K
- Following880
- Followers492
- Likes6.6K
Pinned Tweet
Really excited to finally share that I'll be starting my @e3dtp PhD in September with @amybpedersen up in Edinburgh, where I'll be working on the ecology of infection and immunity in wild mice and get more opportunities to work on all things parasite-y!
Sam Hillman retweeted
⚡️NO TENIM LÍMIT⚡️
Diumenge, a la FM de Sarrià, vam fer història!
🔸️4pd4, 5d7, 2d7, id4d8, 4d8, 2pd5 i pd4bal
Som la primera colla del món casteller que descarrega 2d7 i 4d8 per primer cop a una diada💪
Celebrem-nos, colla, això només acaba de començar!
#enVolemMés #castells
La meva colla ❤️
Replying to @CdSarria
ARA SI! UN ANY DESPRÉS ACONSEGUIM DESCARREGAR EL 2D7!!!!!! 🥵🎖
Primer de la nostra història! Felicitats collaaaaaaaaa! 🥁💥🧨
#enVolemMés #castells #castellers
Boooofff
De moment 8 novetats @EstrellaDammCat
Brindem 🍻 per les estrenes ⭐
#castells i felicitem als @CdSarria com a nova colla de 8
BarometreEstrella.blogspot.c…
Sam Hillman retweeted
A QUARTA RONDA DESPRÉS D'UN id:
PRIMER 4D8 DESCARREGAT DE LA NOSTRA HISTÒRIA 🫠🫠🫠🫠🥰🫠🥰🫠🥰🙃😅🥲😍
#enVolemMés #castells #castellers
Sam Hillman retweeted
Ja no cal dir res més, després de l'assaig d'ahir el sostre ens el posem nosaltres 🤯
Feinada espectacular, ens veiem diumenge a plaça per petar-ho 💥
#enVolemMés
How I spent my first La Mercè
Bon dia!
Avui ens hem llevat aviat per participar a les matinades de la Diada de la Mercè.
Comença un dia emocionant! Som-hiiiii!!!
#enVolemMés #castells
Sam Hillman retweeted
A model trained with a frequentist objective using i.i.d. observational train and validation data is almost surely converging to the non-causal model of the underlying data generating process.
That is because using short cuts/spurious correlations leads to a lower loss than not, i.e. you are actually specifically incentivizing your model not to be causal.
"Emergence" believers' core fallacy is the assumption the causal model would have the lowest error, and therefore better optimization would eventually converge to the causal model.
The opposite is true - the best scoring model (per frequentist objective) is actually the one that is best at exploiting spurious correlations.
Replying to @anshulkundaje @adamlewisgreen
Models trained on observational RNA data with no notion of time have no chance of learning models that have strong guarantees of biological causality. They are learning correlations.
Latest paper from my previous role. Great team to work with.
Despite clear guidelines, germline genetic testing remains underutilized in patients with metastatic breast cancer.
In our new study published in JCO Precision Oncology, we evaluated >15,000 patients with metastatic breast cancer and found that fewer than half received germline BRCA1/2 testing.
This represents a missed opportunity—not just for personalized treatment, but also for cancer prevention in families.
How can we close this gap?
🔗 ascopubs.org/doi/10.1200/PO-…
Sam Hillman retweeted
I am excited to share our new article published in BJS. In this study, we proposed a modified IPCW estimator for Kendall's rank correlation coefficient for survival and ordinal outcomes. doi.org/10.1093/bjs/znaf131
Sam Hillman retweeted
#Statistics thought of the day: challenges and resources for analysis of high-dimensional data: hbiostat.org/hdata
Sam Hillman retweeted
Avui hem descarregat el nostre 30è 4d7 i el nostre 25è pd5!!! 🥇
Moltes gràcies a les colles per l'ajuda i als nostres incansables músics! 🥁
La setmana que ve més i millor 😊✨
#laCollaEtsTu #castells
Sam Hillman retweeted
For the new kids in back: If you hate statistics, you'll love my free lectures. Putting science before statistics, from basics of inference & causal modeling to multilevel models & dynamic state space models. It's all free, made with love and sympathy. youtube.com/playlist?list=PL…
Sam Hillman retweeted
In my three years of being on Twitter, this is the tweet that I come back to the most often.
In the age of AI, this also has aged extremely well. Associations and correlations turned out to mean so much less in biology than we had hoped.
Determining causality is everything.
Sam Hillman retweeted
We compared gut microbiota across >800 lab and wild house mice–and (perhaps unsurprisingly) the differences are striking. Wild mice have more diverse, aerotolerant, and dynamic microbiotas than their lab counterparts. See our latest paper here:
bmcmicrobiol.biomedcentral.c…
Everyone should go to this. Hard but very useful
Dive into stat modeling&applications, relaxing assumptions, predictive accuracy, preserving information, imputation, model validation, Bayesian models, causal specification+many controversial topics: Regression Modeling Strategies course May 15-16, 19-20 hbiostat.org/doc/rms/4day.ht…
Sam Hillman retweeted
New open-access paper: Inverse Probability of Treatment Weighting Using the Propensity Score With Competing Risks in Survival Analysis. #stats #statstwitter onlinelibrary.wiley.com/doi/…
Sam Hillman retweeted
Our work on immortal time bias "Illustrating the structures of bias from immortal time using directed acyclic graphs" led by Emma Guoyi Yang @yanggy_hku is out at International Journal of Epidemiology: doi.org/10.1093/ije/dyae176. Brief thread:
Sam Hillman retweeted
1/
That "immortal time" is so frequent in survival analyses for #causalinference is fascinating.
Because "immortal time" doesn't exist in the data, *we* create it when misanalyzing data.
Our paper pubmed.ncbi.nlm.nih.gov/3949… summarizes why immortal time arises & how to prevent it.
































