Frank Harrell

@f2harrell

Prof, Founding Chair of Biostatistics, Vanderbilt U. Expert Statistical Advisor, Office of Biostatistics, FDA CDER. Blog: Statistical Thinking -fharrell.com

Nashville, TN
biostat.mc.vanderbilt.edu/FrankHarrell
Registrerte seg januar 2017
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  1. Retweetet
    for 19 timer siden

    1. Shut down 2. Jail key decision makers and possibly some of the engineers involved 3. Give the money back to the people it abused (its users) 4. Build ethical replacements for its useful bits

    1 svar 3 retweets 17 liker
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    Angre
  2. for 16 timer siden

    Glad that has restarted this hot discussion on datamethods. I just posted a response that tries to generalize the question.

    Svar til @RogueRad @f2harrell og 6 andre
    Topic created here:
    3 retweets 9 liker
    Angre
  3. Retweetet
    19. des.

    Statistically, machine learning has poor modeling practices which should limit generalizability. It doesn't. Why? For tasks like image recognition, all humans on the ML team understand ground truth; in healthcare/science tasks, it won't be the same. We can expect lots of failure.

    9 svar 28 retweets 135 liker
    Angre
  4. Retweetet
    for 23 timer siden

    My Christmas present for the community: 2.7 is now on CRAN extending support for Gaussian processes and fixing a substantial performance bug in some post-processing methods among other new features and improvements.

    4 svar 71 retweets 233 liker
    Angre
  5. Retweetet
    17. des.

    Please read—well worth your time. Challenges of Non–Intention-to-Treat Analyses | Research, Methods, Statistics | JAMA | JAMA Network

    4 retweets 17 liker
    Angre
  6. Retweetet
    17. des.

    It's a big stretch to put such a positive spin on the wastage of resources that occurs when the scientific pathway is led astray building upon results that can't be replicated.

    “It’s not a replication crisis. It’s an innovation opportunity” Australian cancer researcher Glenn Begley about reproducibility and the meaning of failure in science
    2 retweets 3 liker
    Angre
  7. 17. des.

    Glad to see questionable research practices elevated with respect to severity of harm to science

    Is it time for a new classification system for scientific misconduct?
    3 retweets 10 liker
    Angre
  8. Retweetet
    17. des.

    A+ beautiful, a grand achievement by it is wonderful to see Byrne on clean background, all the original copies I saw over the years all had extensive foxing. In my Envisioning Information, we fully rebuilt 2 Byrne pages, hand-separated colors for printing.

    I recreated Byrne's 1847 edition of Euclid's Elements including interactive diagrams, cross references, and a new poster of all the original illustrations: Plus an in-depth blog post on how it was made:
    1 svar 17 retweets 78 liker
    Angre
  9. Retweetet
    16. des.

    Let me get this straight: Sears has $25 million laying around to pay out executives who ran the company into the ground, but doesn't have any money to give the thousands of workers they laid off severance pay?

    Sears bankruptcy court OKs $25 million in bonuses for top execs
    3 712 svar 32 251 retweets 76 942 liker
    Angre
  10. Retweetet
    15. des.

    Tonight’s ruling creates confusion, puts affordable health insurance at risk, and targets Americans with pre-existing conditions. The Supreme Court already upheld the law’s constitutionality — twice. Sign up tonight for 2019 coverage at .

    5 svar 53 retweets 105 liker
    Angre
  11. Retweetet
    14. des.

    "It took more than a half century to reach the point where faced with a choice between democracy and power, the party chose the latter," argues George Packer.

    325 svar 5 246 retweets 8 712 liker
    Angre
  12. Retweetet
    14. des.

    Didn’t he impeach Bill Clinton over the same thing?

    Lindsey Graham: I’m fine with Trump "lying about sex"
    7 712 svar 34 259 retweets 179 391 liker
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    Angre
  13. Retweetet
    14. des.

    A couple days ago another team asked me to speak about Bayesian data analysis. I decided that instead of doing a nuts/bolts of how to fit/use Bayesian models, I would describe "Bayesian analysis: The Good Parts". <potentially controversial thread>

    17 svar 231 retweets 814 liker
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    Angre
  14. Retweetet
    13. des.

    Not that this is terribly surprising, but still an important message for all to hear.

    0:38
    In the U.S., law enforcement officers kill more than 1,000 civilians each year. New research shows that people who live in states with high gun ownership are much more likely to be shot and killed by police than those in low-gun states
    1 svar 5 retweets 2 liker
    Angre
  15. Retweetet
    12. des.

    Invite others to submit their lists of prevalent faux-pas' compromising reliable evidence generation.

    Value-based Healthcare: analytics may be leaving value on the table
    2 retweets 1 liker
    Angre
  16. Retweetet
    12. des.

    Hi everyone. It’s been awhile since I’ve had a good old-fashioned methods critique, but I'm feeling it today:

    4 svar 28 retweets 98 liker
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    Angre
  17. 12. des.

    Many Analysts, One Data Set – many conclusions - good discussion continues. Hope that joins in -

    2 svar 17 retweets 53 liker
    Angre
  18. 11. des.

    Favorite way to picture probabilities: not with stick figures or frequencies but with a thermometer plot (example below is taken from )

    1 svar 9 retweets 29 liker
    Angre
  19. 11. des.

    Statistician take of the day: A $100 data analysis can make a $1,000,000 study worth $1,000.

    4 svar 20 retweets 127 liker
    Angre
  20. 11. des.

    What the GOP stands for ...

    1 svar 6 liker
    Angre

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