Stefan Schandelmaier
@sschandelmaier.bsky.social
210 followers 300 following 12 posts

Health research methodologist, methods guidance & implementation, meta-science. www.LIGHTS.science @lightsdatabase.bsky.social www.ICEMAN.help @clinepi-basel.bsky.social

Mathematics 33%
Economics 25%
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sschandelmaier.bsky.social
I’m thrilled that leading research groups now recommend our #ICEMANtool to evaluate possible subgroup effects:
#Cochrane in their handbook Chapter 10.6
#GRADE in their guidance No. 36
Germany's #IQWIG in their general methods
www.iceman.help
www.cmaj.ca/content/192/...
ICEMAN
Welcome to the web pages for ICEMAN! ICEMAN is an instrument to help researchers identify credible effect modification (also called subgroup effect, statistical interaction, moderation, or heterogenei...
www.iceman.help

chriso-wiki.bsky.social
Ian Fleming's original James Bond novels haven't aged well. For example, Moonraker - published almost exactly 70 years ago in April 1955 - features a villain who's a super-rich industrialist and rocket-maker seeking to cause chaos because he's a secret Nazi. Such a silly idea!
a man with a beard is sitting in a room with a harp in the background
ALT: a man with a beard is sitting in a room with a harp in the background
media.tenor.com
nisreenalwan.bsky.social
Hi @bmj.com
Can you add a Bluesky share button instead of the X button you have please?
thomasagoritsas.bsky.social
Have you checked our risk-stratified #RapidRecs on #PCSK9 inhibitors and #ezetimibe for the reduction of cardiovascular events ?
@magicevidence.bsky.social @bmj.com
-->https://www.bmj.com/content/377/bmj-2021-069066
adamjkucharski.bsky.social
The risks of backing scattered islands of sensible points in a sea of nonsense: kucharski.substack.com/p/islands-of...

sschandelmaier.bsky.social
So true!
gvleioras.bsky.social
I just saw this elsewhere and it made me think of our discussion here:
gvleioras.bsky.social
I just saw this elsewhere and it made me think of our discussion here:

sschandelmaier.bsky.social
A better statistic might be the prediction interval but in my view the community needs to develop more experience with it before we can use it to confidentially judge relevance of heterogeneity (if ever). And unfortunately it does not work very well in a meta-analysis with only a few studies

sschandelmaier.bsky.social
True. But what else can we do? A paper in the new Core GRADE series (currently under revision in the BMJ) offers a practical solution based on visual inspection of both overlap of confidence intervals (similar to I2) but also where point estimates lie in relation to a relevance threshold.

hildabast.bsky.social
Ever wonder about the basis for fear-mongering & conspiracy theories about mRNA vax? Wish you had a place to go when someone cites "proof"?

I've got you covered! In my latest @plos.org I buckle up for the waves of anti-vax muck likely to come in 2025. 1/2

absolutelymaybe.plos.org/2024/12/28/g...
Getting Ready for More mRNA Vaccine Fear-Mongering: A Compendium - Absolutely Maybe
Recently, I wrote about a depressingly successful campaign against the introduction of a next generation Covid vaccine in Japan. It is a…
absolutelymaybe.plos.org
schwenkej.bsky.social
1/ Excited to share thoughts on two excellent blog posts about clinical trials! First up: "The Case for Clinical Trial Abundance" by @ruxandrabio.bsky.social and Willy Chertman . They argue we need more clinical trials & that bureaucracy hampers faster progress. A sentiment I fully share!
The case for clinical trial abundance
A supply-side reform agenda for one of our most urgent problems
www.slowboring.com

sschandelmaier.bsky.social
Methods guidance is evolving. Here the authors chose to provide explicit recommendations both in favor but also agains certain methods. I think that that’s the way forward!
vickersbiostats.bsky.social
Very nice summary recommendations on how to evaluate a prediction model from a group of top researchers in the field.

vickersbiostats.bsky.social
Very nice summary recommendations on how to evaluate a prediction model from a group of top researchers in the field.
miguelhernan.org
Does #randomization ensures balance of risk factors between groups? Consider this:

In Denmark 860 individuals were randomly allocated to either intervention or control. Individuals were unaware of their allocation. No intervention took place. Mortality was higher in the intervention group (p=0.003)
rorinstitute.bsky.social
Launching this week, MetaROR will be a free, open platform where anyone working with metaresearch can share their work and receive transparent, open peer reviews.

Join us at one of our launch events to find out more: researchonresearch.org/metaror-laun...

sschandelmaier.bsky.social
Hi qualitative researchers!

For my teaching, I was searching for something like PICO for qualitative. I found SPIDER and like it! pubmed.ncbi.nlm.nih.gov/22829486/

Is anybody aware of any other scheme for systematic question / problem / objective formulation in a qualitative study?
statsepi.bsky.social
For patient-focused research, there are very few useful research aims, and none of them are "identifying risk factors.”

Seriously! 😜

(ICYMI)

statsepi.substack.com/p/sorry-what...
Sorry, what was the question again?
And again. And again. And again...
statsepi.substack.com

sschandelmaier.bsky.social
Did you just present new #TrialsMethodology guidance at #ICTMC2024? Have a look at our new database and check whether it is already in it. If not, send it along!
lights.science
Homepage - LIGHTS
The Library of Guidance for Health Scientists. A living database for methods guidance.
lights.science