Elias Eythorsson
eliaseythorsson.bsky.social
Elias Eythorsson
@eliaseythorsson.bsky.social
Hospitalist. PhD in Epidemiology. Amateur statistician & prognostic modeler. Hope to grow up to be a trialist.
Reposted by Elias Eythorsson
If you have a manuscript ready to submit in mid-December do you:

a) Submit in December (when editors are bombarded with manuscripts)
b) Hold off until mid-January to let the editors have a damn holiday already
November 28, 2025 at 11:30 AM
Reposted by Elias Eythorsson
{DAGassist} let's you process a DAG and estimate models giving {dagitty} input and baseline model #CausalSky #rstats
cran.r-project.org/web/packages... I think {ggdag} has more to offer for analysis of a DAG, while {DAGassist} is a one-stop package for classifying variables and getting estimates
October 30, 2025 at 7:16 PM
Reposted by Elias Eythorsson
every single tech idea is like “soon our robots will be capable of playing catch with your kid, freeing you up to spend more time working on your employers’ spreadsheets”
October 11, 2025 at 2:07 PM
Reposted by Elias Eythorsson
you know what fair
October 10, 2025 at 9:35 AM
Reposted by Elias Eythorsson
CHATGPT: I understand where you're coming from. You worked really hard to get here, and now it's time to enjoy the fruit of your labors.

ISILDUR: So I should keep it? Elrond says I shouldn't

CHATGPT: The ring is precious. Sometimes friends don't have your best interests at heart.

ISILDUR: true
October 6, 2025 at 1:58 PM
Reposted by Elias Eythorsson
We didn't randomize, and there was no allocation concealment or blinding, and we can't really be sure what intervention they got or how the outcomes were measured, but we emulated a trial by drawing a DAG.
August 31, 2025 at 3:21 PM
Reposted by Elias Eythorsson
Perfectly stated Darren. Don’t anyone think this is an exaggeration. I’ve seen this in supposedly reputable cardiology journals, sometimes even with omission of “by drawing a DAG”.
We didn't randomize, and there was no allocation concealment or blinding, and we can't really be sure what intervention they got or how the outcomes were measured, but we emulated a trial by drawing a DAG.
September 1, 2025 at 12:57 PM
Reposted by Elias Eythorsson
So, the Cuban studies reporting near complete block of #SARSCOV2 / #COVID19 infection after high-risk exposures with 1M units may have been valid after all.
40k units were used once a day and cut infections by 40% 👇
academic.oup.com/cid/advance-...

The Nazoferon studies are also nice
August 30, 2025 at 3:42 PM
Reposted by Elias Eythorsson
Decongestion Secrets ("ammo" for rounds):

In a multi-center study of 283 acute heart failure patients, changes in renal filtration markers (cystatin C or creatinine) with aggressive diuresis were not associated with changes in markers of renal tubular injury (NAG, NGAL, or KIM-1)
August 27, 2025 at 12:53 PM
Reposted by Elias Eythorsson
Reposted by Elias Eythorsson
ICU #POCUS "Secrets":

This is why some times we achieve perfect alignment of the cardiac probe with the interventricular septum (IVS) & record great 4-chamber clips and other times* we cannot even find the IVS (when there is AIR interposed between the heart apex and the probe):
August 21, 2025 at 5:30 PM
Reposted by Elias Eythorsson
Now on CRAN, ggdiagram is a #ggplot2 extension that draws diagrams programmatically in #Rstats. Allows for precise control in how objects, labels, and equations are placed in relation to each other.
wjschne.github.io/ggdiagram/ar...
August 20, 2025 at 10:43 AM
Reposted by Elias Eythorsson
New paper in @annalsofim.bsky.social

"50 ways to misinterpret clinical prediction models for treatment decisions”

--> Published version: www.acpjournals.org/doi/10.7326/...

--> Open access version: arxiv.org/pdf/2402.17366
The Risks of Risk Assessment: Causal Blind Spots When Using Prediction Models for Treatment Decisions | Annals of Internal Medicine
Clinicians increasingly rely on prediction models to guide treatment choices. Most prediction models, however, are developed using observational data that include some patients who have already receiv...
www.acpjournals.org
August 11, 2025 at 2:32 PM
Reposted by Elias Eythorsson
CVICU attending surveying the undifferentiated chaos of the MICU
August 4, 2025 at 1:37 PM
Reposted by Elias Eythorsson
Exciting news, my first publication is out in #JIM !

#Amiodarone induced thyroid dysfunction: A high cumulative incidence in a nationwide cohort study in Iceland

We found a very high incidence of both #thyrotoxicosis and #hypothyroidism among amiodarone users

doi.org/10.1111/joim...
July 17, 2025 at 10:29 PM
Reposted by Elias Eythorsson
Intro: I'm an applied statistician & cognitive psychologist in methods reform. I am generally critical of popular reform thinking. Here are some of my blog posts. First, why replacing "power" with "precision" misses the point of power (it is precision!): richarddmorey.medium.com/power-and-pr...
Power and precision
Why the push for replacing “power” with “precision” is misguided
richarddmorey.medium.com
November 10, 2024 at 10:56 AM
Reposted by Elias Eythorsson
This is how you can reorder axis levels in #tidyplots 0.3.1 🚀

#rstats #dataviz #phd
July 11, 2025 at 4:18 PM
Reposted by Elias Eythorsson
“Historically, no one lived past age 35”

"I’ve heard *so* many versions of this claim, including recently from a menopause doctor (implying menopause is not “natural” because noone lived long enough to go through it). Every time someone states this “fact,” a demographer loses a piece of their soul"
There Were Still Old People When Life Expectancy Was 35.
A demography myth that won't die
jenndowd.substack.com
June 16, 2025 at 10:16 AM
Reposted by Elias Eythorsson
very fun to read frederick douglass accurately describe the problem with the pardon power in 1867
June 5, 2025 at 11:56 AM
Reposted by Elias Eythorsson
I finally understood B-splines by working through the Cox-deBoor algorithm step-by-step, discovering they’re just weighted combo of basis functions that make non-linear regression linear. What surprised me is going through Bayesian statistics helped me understand the engine behind the model! #rstats
Understanding Basis Spline (B-spline) By Working Through Cox-deBoor Algorithm | Everyday Is A School Day
I finally understood B-splines by working through the Cox-deBoor algorithm step-by-step, discovering they're just weighted combinations of basis functions that make non-linear regression linear. What ...
www.kenkoonwong.com
June 4, 2025 at 12:44 AM
Reposted by Elias Eythorsson
A long long time ago, in a far away galaxy... the US used to tax the rich
May 23, 2025 at 8:19 PM
Reposted by Elias Eythorsson
wife: how was guarding the two paths today, honey?

guard: [looking away] fine

wife: did something happen?

guard: [tearing up] no

wife: would the other guard tell me something happened?
May 18, 2025 at 9:13 PM
Reposted by Elias Eythorsson
At some point there’s going to be a Star Wars film that tells the story of the person telling a story of events that happened “a long time ago in a galaxy far far away”
May 15, 2025 at 6:32 PM
Reposted by Elias Eythorsson
Me revising my manuscript for submission:
May 15, 2025 at 2:05 PM