Mathias Weis Damkjær
tweis.bsky.social
Mathias Weis Damkjær
@tweis.bsky.social
MD, PhD Student at Centre of Evidence-Based Medicine, Cochrane/Denmark
Personal account. Does not reflect my employer
Reposted by Mathias Weis Damkjær
"we probably do not need to worry about the fact that the actual effect of one treatment rather than the other is not the same for all patients. Quite limited knowledge about an average improvement is the best that we can do" John Tukey, Controlled Clinical Trials, 1993 p282
November 24, 2025 at 12:01 PM
Reposted by Mathias Weis Damkjær
There has been a lot of debate recently about the promise of real world data - the routine (observational) data collected on patients eg  treatments received, clinical outcomes etc – for estimating treatment effects. But can they deliver? 1/9
#MethodologyMonday #123
August 18, 2025 at 6:35 AM
Reposted by Mathias Weis Damkjær
❓ In people with HIV, is using two different rapid tests together ('parallel testing') to diagnose TB more accurate than using only one?

An 'incremental' accuracy question: few Cochrane Reviews have yet addressed such questions.

Adult review: shorturl.at/r9CUG
Child review: shorturl.at/nSosK
June 13, 2025 at 9:27 AM
Reposted by Mathias Weis Damkjær
The Evidence Synthesis and Meta-Analysis in R Conference (ESMARConf) is back! It will be held June 11th to the 13th, 2025: esmarconf.org/2025/

Recordings of the talks and workshops from previous years can be found here: esmarconf.org/recordings/

#ESMARConf #MetaAnalysis #EvidenceSynthesis #RStats
2025 - ESMARConf
esmarconf.org
March 6, 2025 at 8:45 AM
Reposted by Mathias Weis Damkjær
After two years of trying to avoid this discussion, I just necroed *that thread* on datamethods (discourse.datamethods.org/t/should-one...) in order to share an excellent preprint by philosopher Veli-Pekka Parkkinen (philsci-archive.pitt.edu/24785/1/efme...)
Should one derive risk difference from the odds ratio?
I urge all readers of this thread to read the excellent new preprint from philosopher of science Veli-Pekka Parkkinen, “Choice of effect measure, extrapolation, and decision-making in patient care an...
discourse.datamethods.org
February 26, 2025 at 10:00 AM
Reposted by Mathias Weis Damkjær
Two angels discussing the basics of treatment effects.

(ICYMI)

statsepi.substack.com/p/a-conversa...
A conversation on treatment effects
The trial statistician and the clinical investigator took a step back to admire their creation.
statsepi.substack.com
January 9, 2025 at 8:15 AM
Reposted by Mathias Weis Damkjær
Nice write up of our study applying potential trustworthiness checks to RCTs in 50 Cochrane Reviews in Nature by @richvn.bsky.social : www.nature.com/articles/d41...
Giant study finds untrustworthy trials pollute gold-standard medical reviews
Two-year collaboration aims to create tools to help counter the tide of flawed research.
www.nature.com
December 19, 2024 at 9:34 AM