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David Ridley Profile
David Ridley

@dave_ridley

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Health economist, priority review voucher co-author, and basketball fan working at @DukeU.

North Carolina
Joined December 2011
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@dave_ridley
David Ridley
2 years
Two of our articles have become law. Yesterday, President Biden signed a bill creating EPA vector expedited review vouchers which we proposed in a 2015 article. In 2007, President Bush signed a bill creating FDA priority review vouchers which we proposed in a 2006 article.
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@dave_ridley
David Ridley
16 days
Great insights on DeepSeek from @StuWoo of @WSJ: 1. ChatGPT is an expert who read all the books; DeepSeek is a detective who finds info on demand. 2. DeepSeek has decent chips because Nvidia adapted to Biden admin restrictions by boosting other capabilities—until those were restricted too.
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@dave_ridley
David Ridley
23 days
RT @fermatslibrary: In the fall of 1972, President Nixon announced that "the rate of increase of inflation was decreasing". Probably the fi…
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@dave_ridley
David Ridley
25 days
If you led a healthcare company, would you: 1️⃣ As a PBM CEO, pass all rebates to employers, 2️⃣ As a drug maker CEO, reward reps for knowledge & service, not sales, or 3️⃣ Invest in a malaria drug to help millions, despite no profit? Andrew Witty did all three at UnitedHealth & GSK. Not directly profitable, but 1 & 2 might ease regulatory pressure. 3 can attract & inspire talent.
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@dave_ridley
David Ridley
1 month
Less is often more, according to Shelley Hwang, MD, MBA, of @DukeU. In her latest study in @JAMA_current, she and her coauthors demonstrated that active monitoring may offer a safe, less invasive approach for managing low-risk ductal carcinoma in situ (DCIS). Watch the video: Read the article:
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@dave_ridley
David Ridley
1 month
The @US_FDA published a great summary of novel drug approvals in 2024:
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@dave_ridley
David Ridley
2 months
MosquitoMate’s male mosquitoes use Wolbachia bacteria to reduce Aedes aegypti populations by >95%, offering a species-specific solution against dengue, Zika, and yellow fever—without chemicals or genetic modification. 🦟
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@dave_ridley
David Ridley
3 months
The GLP-1 miracle drugs provide large cost offsets for Body Mass Index (BMI) > 40 (for example, 5'6" and 250 lbs). For BMI = 30, average cost offsets are negligible. Cost-effectiveness depends on the psychic value of being slim & health benefits beyond weight loss. My take on @cawley_john’s great talk @DukeU!
@dave_ridley
David Ridley
3 months
Prof. @cawley_john will give 2 talks at @DukeU on Friday: • 12:45 PM in Fuqua's Leaman classroom: “The New Obesity Drugs: Impacts on Health and Implications for Health Insurance” • 3:00 PM in Social Sciences 111: “The Effects of Taxes on Sugar-Sweetened Beverages”
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@dave_ridley
David Ridley
3 months
A study on digital expert advice by @KateBundorf, @MariaAPolyakova, and @mtaiseale revealed surprising insights relevant to AI: 1. The tool increased, rather than saved, time. 2. High-skill users benefited more because low-skill users didn't use it. This highlights how AI's impact depends on selection. It could help low-skill users more, but only if they engage with it. #MatthewEffect
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@dave_ridley
David Ridley
3 months
A more nuanced public health message could help rebuild trust, writes @ProfEmilyOster in the @nytimes.
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@dave_ridley
David Ridley
3 months
Prof. @cawley_john will give 2 talks at @DukeU on Friday: • 12:45 PM in Fuqua's Leaman classroom: “The New Obesity Drugs: Impacts on Health and Implications for Health Insurance” • 3:00 PM in Social Sciences 111: “The Effects of Taxes on Sugar-Sweetened Beverages”
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@dave_ridley
David Ridley
3 months
I'm struggling to reconcile these: • @TheLancet reports a 167% rise in heat-related deaths among 65+ since the 1990s. • @IHME_UW reports that heat and cold exposure are responsible for .1% of deaths and this has *fallen* since the 1990s. Why do they differ? • Is the rise in @TheLancet due to an increase in seniors? • Are deaths from heat offset by lives saved from avoiding cold? • Are other problems in the world growing faster? • Other? Lancet: IHME:
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David Ridley
4 months
RT @Farzad_MD: 2/ As the press release says 480 ACOs providing care to nearly 11 million people with Medicare saved the gov't $5B dollars…
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@dave_ridley
David Ridley
4 months
RT @parker_rog: 🚨 What happens when the gov't cuts prices on medical technologies? New research (w/ @YunanJi) finds a 61% price cut led to…
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@dave_ridley
David Ridley
4 months
Pharmacy benefit managers are partnering with drug makers to co-market biosimilars. A previous PBM-pharma tie-up failed. In 1993, Merck acquired Medco, but it didn't last. People didn’t trust a PBM owned by a drug maker.
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@dave_ridley
David Ridley
4 months
If your organization is conducting healthcare research with transformative potential, and you're seeking product development funding from the U.S. government, check out the 'Doing Business with ARPA-H Industry Day' on November 13. Learn more here:
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@dave_ridley
David Ridley
4 months
Pfizer withdrew its sickle cell drug after deaths from malaria and other diseases. The sickle cell trait protects against malaria. Could the drug be harmful in malaria-endemic areas but beneficial in places like the US? Or does it also significantly reduce protection against other infections?
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@dave_ridley
David Ridley
5 months
Welcome to the ACC, Berkeley! At the coin flip when Berkeley plays UNC (in football in 2025?), I hope the loudspeaker blasts the Jo Dee Messina song “Heads Carolina, Tails California”
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