Yajuan Si
@yajuansi.bsky.social
We aim to find our way out of the mix of probability, probability-based, and nonprobability sample survey data collection.
🧪With global mental health challenges rising, rigorous data tools matter more than ever. @yajuansi.bsky.social, James Wagner & Ronald Kessler urge combining online panel surveys with high-quality probability samples for valid, practical studies. Details: myumi.ch/dgDP1
Surveys in Psychiatric Epidemiological Research
This Special Communication examines the biases and operational problems of surveys used in psychiatric epidemiological research to develop a standard for using nonprobability and probability-based onl...
myumi.ch
December 15, 2025 at 9:53 PM
We aim to find our way out of the mix of probability, probability-based, and nonprobability sample survey data collection.
Reposted by Yajuan Si
Shiyu Zhang, @yajuansi.bsky.social & John Dziak clarify the assumptions and mechanisms by which different missing data strategies accommodate missingness in covariates and reconcile recommendations that sometimes appear contradictory in the literature myumi.ch/5kGMD
How to manage missing covariates in randomized controlled trials: a comparison of strategies - BMC Medical Research Methodology
Background When analyzing randomized controlled trials (RCTs) data, covariate adjustment is often employed to increase the precision of estimated treatment effects. Missing data in covariates, if not ...
myumi.ch
December 1, 2025 at 4:43 PM
Shiyu Zhang, @yajuansi.bsky.social & John Dziak clarify the assumptions and mechanisms by which different missing data strategies accommodate missingness in covariates and reconcile recommendations that sometimes appear contradictory in the literature myumi.ch/5kGMD
Reposted by Yajuan Si
Meet Zachary Winograd, student at the Michigan Program for Survey and Data Science and research assistant at @d3center.bsky.social at the Survey Research Center (SRC)!
Learn more about the MPSDS and students here: surveydatascience.isr.umich.edu
#masters #research #datascience
Learn more about the MPSDS and students here: surveydatascience.isr.umich.edu
#masters #research #datascience
November 17, 2025 at 3:43 PM
Meet Zachary Winograd, student at the Michigan Program for Survey and Data Science and research assistant at @d3center.bsky.social at the Survey Research Center (SRC)!
Learn more about the MPSDS and students here: surveydatascience.isr.umich.edu
#masters #research #datascience
Learn more about the MPSDS and students here: surveydatascience.isr.umich.edu
#masters #research #datascience
A great opportunity to dive into an interesting field with interesting data
The HBCD-START (Scientific Training in Addiction Research Techniques) program is now recruiting its 1st cohort of scholars!
This 1-year course is open to 4 graduate students, 4 postdoctoral fellows, & 4 junior faculty.
For more information: uclahs.az1.qualtrics.com/jfe/form/SV_...
This 1-year course is open to 4 graduate students, 4 postdoctoral fellows, & 4 junior faculty.
For more information: uclahs.az1.qualtrics.com/jfe/form/SV_...
October 7, 2025 at 10:03 PM
A great opportunity to dive into an interesting field with interesting data
This open source software can handle various MRP applications. Try it out!
🧪Yajuan Si & Toan Tran developed a new computational interface that could allow for more people to apply multilevel regression and poststratification to their data, even if they don’t have a statistics background or experience with R programming language myumi.ch/E8Eqp
August 18, 2025 at 8:11 PM
This open source software can handle various MRP applications. Try it out!