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Frank Harrell
@f2harrell
Biostatistician/Professor/Founding Chair of Biostatistics, Vanderbilt U. Blog: Statistical Thinking:fharrell.com @f2harrell on bsky.social
Nashville, TN
hbiostat.org
Joined January 2017
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  • user avatar
    Frank Harrell
    @f2harrell
    Jan 21, 2022
    We lost one of the greatest statisticians of all time: Sir David Cox, developer of both the binary logistic regression model (1958) and the Cox proportional hazards model (1972), but so much more. rss.org.uk/news-publicati… @vandy_biostat #Statistics #biostat
    rss.org.uk
    Sir David Cox, 1924-2022
  • user avatar
    Frank Harrell
    @f2harrell
    Jan 4, 2019
    My close colleague Sam Nwosu @vandy_biostat flabbergasted me today with the gift of a batch of biostatistics cookies made by his wife Brionni, including a cookie version of my book! Much easier to digest than the paper version ...
  • user avatar
    Frank Harrell
    @f2harrell
    Jun 27, 2022
    Announcing that my free text Biostatistics for Biomedical Research has been significantly updated and turned into a 22 chapter reproducible e-book thanks to @rstudio 's Quarto : hbiostat.org/bbr #bbrcourse #Statistics #clinicaltrials #RStats @vandy_biostat @EdgeforScholars
    Biostatistics for Biomedical Research
    From hbiostat.org
  • user avatar
    Frank Harrell
    @f2harrell
    Nov 29, 2019
    100 pages of online course notes added for Regression Modeling Strategies: intro to survival analysis and parametric survival models: hbiostat.org/doc/rms.pdf now 504 pages #bbrcoourse #Statistics @vandy_biostat
  • user avatar
    Frank Harrell
    @f2harrell
    Jul 25, 2022
    What an 11 days. Positive stress echo test on July 15, cardiac cath on 19th, coronary bypass surgery on 20th, home 24th. Incredible medical care from cardiologist Dr See, surgeon Dr Shah, teams @VUMChealth, support and care from my md wife Liana & family/friends/colleagues.
  • user avatar
    Frank Harrell
    @f2harrell
    Aug 24, 2019
    Toying with the idea of hosting an almost-weekly one-hour live webinar (with student participation) on applied statistics/biostatistics. Some topic choices would come from twitter polls. Please respond to the poll in the next tweet if you are definitely interested.
  • user avatar
    Frank Harrell
    @f2harrell
    Oct 14, 2018
    Statistical thought of the day: bad statistical practice is so pervasive in so much of observational research that correlation is not correlation.
  • user avatar
    Frank Harrell
    @f2harrell
    Oct 29, 2021
    This t-shirt says it all
  • user avatar
    Frank Harrell
    @f2harrell
    Nov 15, 2021
    Charlotte Briggs Harrell 1926-2021 Today I lost my dear mom, two weeks after her 95th birthday. I feel a great emptiness but I also feel wonder at how could I have been this lucky to have had her as a mom.
    Charlotte Harrell
  • user avatar
    Frank Harrell
    @f2harrell
    Nov 30, 2019
    #rstats discovery of the day: patchwork: elegant grammar for combining plots: github.com/thomasp85/patc… by @thomasp85
  • user avatar
    Frank Harrell
    @f2harrell
    Jun 14, 2022
    R Workflow is now an e-book at hbiostat.org/rflow - it's a result of 31 years of using R & its precursor S in reproducible biomedical research, and capitalizes on Quarto, data.table, ggplot2, Hmisc,... #Rstats @vandy_biostat @VUDataScience #DataScience #Statistics @rstudio
    hbiostat.org
    R Workflow
    R Workflow for Reproducible Data Analysis and Reporting
  • user avatar
    Frank Harrell
    @f2harrell
    Aug 31, 2022
    Regression Modeling Strategies course notes have been significantly expanded, updated, and converted into a free #quarto e-book at hbiostat.org/rmsc #rmscourse @vandy_biostat @VUDataScience #RStats @quarto_pub @EdgeforScholars #Statistics
  • user avatar
    Frank Harrell
    @f2harrell
    May 31, 2019
    Galben Harrell - one of the saddest days of my life to lose him to Cushing's disease today. He was about 12 years old. A finer friend and companion I could not imagine.
  • user avatar
    Frank Harrell
    @f2harrell
    Oct 12, 2020
    Outstanding new tutorial on survival analysis: onlinelibrary.wiley.com/doi/abs/10.100… (just wish it weren't paywalled) #rmscourse
    onlinelibrary.wiley.com
    Analysis of time‐to‐event for observational studies: Guidance to the use of intensity models
    This paper provides guidance for researchers with some mathematical background on the conduct of time-to-event analysis in observational studies based on intensity (hazard) models. Discussions of...