Associate Professor of Epidemiology | UPenn. DU, UPenn, and Yale alum. Opinions own. RT ≠ endorsement.
Joined August 2009
- Tweets 112
- Following 413
- Followers 362
- Likes 681
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May 14
Cooling isn’t a luxury. It’s preventive care for millions living with diabetes and chronic conditions. Fed policy needs to catch up. Proud to share our @statnews op-ed. #extremeheat #healthequity #LIHEAP
Access to air conditioning is critical preventive care. But federal policy treats it as optional, write Charles E. Leonard and Anthony Nicome. trib.al/Q31azt6
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Charles E Leonard retweeted
10 Mar 2025
Great new paper in Clinical Pharmacology & Therapeutics led by doctoral student Haedi Thelen:
Characterizing Treatment Effect Heterogeneity
Using Real-World Data
ascpt.onlinelibrary.wiley.co…
@HaediThelen @HennessySean
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12 Nov 2024
Exited to share my work at the intersection of real-world evidence, clinical pharmacology, and environmental epidemiology!
12 Nov 2024
Ambient temperature & serious adverse health outcomes among users of different antidiabetes drugs ft. @CE_Leonard, Kacie Bogar, Colleen Brensinger, Warren Bilker, @Alicechencheng & @HennessySean @Penn_CREST @UPenn_CCEB @UPennDBEI @PennSysPharmATT
bmjopen.bmj.com/content/14/1…
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12 Nov 2024
Come join our team!
11 Nov 2024
We are looking for a research project manager! wd1.myworkdaysite.com/recrui…
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Charles E Leonard retweeted
22 Oct 2024
Spotlighting an excellent paper by one of our first-year PhD students, Lin-Chieh Meng!
Paternal metformin use and risk of congenital malformations in offspring in Norway and Taiwan: population based, cross national cohort study
@LinChiehMeng
bmj.com/content/387/bmj-2024…
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Charles E Leonard retweeted
15 Mar 2024
New in Clinical Pharmacology & Therapeutics and led by
@Alicechencheng :
Comparative Risk of Injury with Concurrent Use of Opioids and Skeletal Muscle Relaxants
@HennessySean @CE_Leonard @Miano81 @UPennDBEI
ascpt.onlinelibrary.wiley.co…
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Charles E Leonard retweeted
19 Dec 2023
Out now open access: Psychotropic Medication Use in Children and Youth with Autism Enrolled in Medicaid.
link.springer.com/article/10… Thanks to our mostly twitterless team led by Jess Rast! With @CE_Leonard @TedBrodkin (1/3).
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17 Jul 2023
Come join us! Message me if you’d like further detail!
17 Jul 2023
Our group at UPenn is looking for 1-2 postdocs in Real-World Evidence. Please share with those looking for positions. med.upenn.edu/apps/my/bpp_po…
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23 May 2023
Pleased to share our @ASCPT_ClinPharm #CTSjournal blog post motivating our #RWE work on antidepressant drug interactions! #TranslationalBytes @Alicechencheng ascpt.org/Journals/CTS/Trans…
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5 Jan 2023
Excited to share coverage of our work at the intersection of chronic dz epi, environmental epi, and pharmacoepi! @Penn_CREST @HennessySean ldi.upenn.edu/our-work/resea…
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Charles E Leonard retweeted
4 Jan 2023
Thanks to @PennLDI for featuring work by @CE_Leonard on the joint effects of medications and extreme heat and cold, which are becoming more common with climate change. ldi.upenn.edu/our-work/resea… @UPennDBEI @Penn_CREST
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Charles E Leonard retweeted
21 Dec 2022
Meet Cheng Chen, our #CTSjournal trainee spotlight. Check her paper: "Antidepressant drug–drug–drug interactions associated with unintentional traumatic injury: Screening for signals in real-world data"
#CTSjournal
#ASCPTjournalfamily
@alicechencheng
@UPennDBEI
@CE_Leonard
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Charles E Leonard retweeted
16 Dec 2022
interested in epidemiology #pedagogy? 🎓check out this new @AmJEpi article from @shaharshmuelphd, @CE_Leonard, @KB_Filion, @MarissaSeamans, et al. on the importance of training across subdisciplines to promote better exchanges of ideas @societyforepi doi.org/10.1093/aje/kwac192
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Charles E Leonard retweeted
21 Nov 2022
On Friday several of our investigators attended the @UPennCEET_CEC Symposium on Climate Change and Human Health.
CREST's Kacie Bogar showcased her poster based on our recent Diabetes Care publication (pictured with collaborator @MichelleScience of Yale and @HennessySean)
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Charles E Leonard retweeted
@PennPARC Quartet pilot recipient @CE_Leonard published in @DiabetesCareADA "Climate Change and Ambient Temperature Extremes..." funded by @NIA_BSR & was highlighted in the @PennMedBench Oct Newsletter @nia_demography #AmericanDiabetesMonth @AmDiabetesAssn doi.org/10.2337/dc22-1161
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Charles E Leonard retweeted
7 Nov 2022
Excited to share a new commentary on “innovation at the edges” in epidemiology in @AmJEpi written with an amazing team @CE_Leonard Katsiaryna Bykov @KB_Filion @MarissaSeamans @LundJenny
academic.oup.com/aje/advance…
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Charles E Leonard retweeted
31 Oct 2022
Our new paper (w/ 4 commentaries!) introduces Instrumented Difference-in-Differences, permitting valid inference with milder assumptions than calendar time IV or DiD. Consider if studying an exposure with differential exposure trends by group.
onlinelibrary.wiley.com/doi/… @PennCausal
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Charles E Leonard retweeted
12 Oct 2022
📝Newly published in American Journal of Epidemiology and lead by @HennessySean and Jesse Berlin:
Real-World Trends in the Evaluation of Medical Products
academic.oup.com/aje/advance…
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10 Oct 2022
Excited to share my work on outdoor temp and rates of bad outcomes in T2DM — a wonderfully collaborative effort at the intersection of chronic dz epi and environmental health. diabetesjournals.org/care/ar…
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Charles E Leonard retweeted
21 Sep 2022
✨NEW✨ from the CREST team:
Population-based screening to detect benzodiazepine drug-drug-drug interaction signals associated with unintentional traumatic injury
@Alicechencheng @HennessySean @DawwasGhadeer @Miano81 @phuongpng @CE_Leonard
nature.com/articles/s41598-0…
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