Discover and read the best of Twitter Threads about #epitwitter

Most recents (24)

Hi #pediatricians, our work on #disparities in #disability id. was just cited by the @AmerAcadPeds in their #policy statement on the impact of #racism on children's health. Our most recent study was cited. If helpful, here is a thread of our work to date. #RacismAndHealth (1)
@AmerAcadPeds Here is the abstract and link the the study cited in the @AmerAcadPeds policy statement.…. We find that children of color are less likely to be identified as having disabilities than similarly situated students who are White in U.S. schools (2)
@AmerAcadPeds Here is an example finding. Of U.S. 4th grade students displaying clinically significant reading difficulties, 74% of White students are receiving special education. The contrasting percentages for Black, Hispanic, and American Indian students? 44%, 43%, and 48%, respectively (3)
Read 15 tweets
Hey, #epitwitter allow me to introduce the #epigif! A whole new level of #epicartoon to inform and delight 😆
If you’d prefer a non-gif version, the inaugural #epigif is based on this Medium post of mine👇🏼
So, what do you think? More #epigifs? Just stick with #epicartoons? Other ideas?
Read 3 tweets
1. PhD thesis 'Modelling BCG vaccination in the UK: What is the impact of changing policy?' submitted and everything is totally normal....

Written with #rstats, #bookdown, and #thesisdown.

Read here:

#phdchat #epitwitter #openscience #tuberculosis
2. Thanks to my supervisors @n3113n and @Christensen_H + my funders @HPRU_EI + @PHE_uk for the data.
3. Some results: 'getTBinR: an R package for accessing and summarising the World Health Organisation Tuberculosis data'



Read 13 tweets
"Between 2006 and 2015, ... colorectal cancer rates increased by 3.47 percent among Canadian men under age 50. And from 2010 to 2015, rates increased by 4.45 percent among women under age 50."

Let's check the data ...
Who teaches that fitting a regression line is drawing a straight line and drawing as many other straight lines as needed and wherever needed?

@f2harrell @statsepi @MaartenvSmeden #epitwitter #statstwitter #peerreviewed @JAMANetworkOpen…
I am adding a reference to the method here, which I didn't know about (and which I still don't understand why that can be applied to 45 datapoints without over fitting--maybe someone can explain).
Read 3 tweets
I have a matching question, #epitwitter:

In cohort studies, matching is supposed to control for confounding so you don’t need to adjust for the matching factors, but in case-control studies, matching just improves efficiency & you still need to adjust for matching factors... 1/3
In a DAG, the case-control situation seems clear to me👇🏼... selection is a consequence of the outcome and the match factor and is therefore a collider.

So, makes sense that we need to adjust for the match factor in a case-control study to block that path & the confounding. 2/3
But, when I draw a similar DAG for a cohort study, isn’t selection a consequence of *exposure* & the match factor & therefore *still* a collider?

Why don’t we need to adjust for the match factor as a confounder / open collider path in a cohort study? What am I missing? 3/3.
Read 3 tweets
THREAD: I’m a scientist and I gained 1K TWITTER FOLLOWERS in FIVE WEEKS. Here’s how I did it. #medtwitter #epitwitter #AcademicTwitter #AcademicChatter #phdchat
1. I changed my mindset about Twitter. When I first started my account, I thought of it as a personal platform where people yell at each other (true). But it’s more than that. It’s a PROFESSIONAL NETWORKING tool. Use it to find your tribe. I’m looking at you #epitwitter.
2. I made my profile searchable and memorable. Does your bio describe you or does it sound like a canned bio on your employer’s website (or worse: a dating site)? Describe your profession. Add some dimension like #vegetarian #endocrinologist. Give people a reason to follow you.
Read 16 tweets
1. First release of {#idmodelr} is now on CRAN. {idmodelr} is a library of #infectiousdisease models and utilities for using them. Use case is exploration/education/research + signposting.

#rstats #epitwitter #dynamics #opensource #openscience
2. Current status is WIP with more features - and additional models - planned. Contributions much appreciated!

Planned features:…
3. {#idmodelr} has an accompanying #shiny app that demos some of the functionality and can be used as a standalone tool for exploring infectious disease models.

See here:…
Read 9 tweets
Yesterday, @BUSPHEpi #epibookclub was joined by Dr Nancy Krieger

It was so great to be able to discuss with her in person! I definitely understand so much more now!

So, here’s a thread of our convo👇🏼
The 1st question was posed by @ProfMattFox: what was Dr Krieger’s goal in writing this book?

Long story short: “this book is what I wish I had been taught as a student”

She encouraged students to explore their interests even if they don’t fit traditional boundaries of the field
Dr Krieger said something which really resonated with me & is a big part of why I #epitwitter

“The role of educators is to transmit the lessons you’ve learned to others”

If we dont share what we’ve learned, be it theory or methods or experiences, we’re not fulfilling our roles.
Read 29 tweets
Is social epi stuck in a loop?

Each new wave of researchers seems to rediscover the same concepts & mechanisms & study them with newer fancier methods. But are we getting anywhere?
Maybe one for #epibookclub #epitwitter
I'm amazed by the number of papers I read announcing that, lo & behold, health inequalities are not simply about people's choices. Yes, health inequalities are largely caused by social structures, and socio-political values.
Because populations are organised by social structures, people embody the world differently. This means that health mirrors our social structures.
Read 8 tweets
Happy Tuesday, #epitwitter! There’s been a lot of discussion #onhere about #causalinference lately, but that’s not all that epi is about.

For this week’s #epichat with @epiellie, let’s talk about descriptive epi!

To kick things off, an #epiquiz:

How often do you do descriptive epidemiology in your work or research?

(click to see poll options)
Next question — this one’s for discussion so share your thoughts!

What differentiates descriptive epi from causal inference epi?

My take: descriptive epi is about who, what, where, & when; causal inference epi is about why, how, and what would happen if we changed something.
Read 11 tweets
If you saw this and you’re not an avid follower of #epitwitter, you may have followed the link to the paper and thought, “Wow! Why is she so devoted to something so boring?” Well I'm here to tell you why *SELECTION BIAS* could keep me awake though the mid-chemo Benadryl haze. 1/
First, what do I mean by selection bias? The term is used differently between and even within disciplines, so let me clarify. 2/
Often "selection bias" is used to describe the fact that studies aren’t representative of a population — they select on factors like age or income, whether accidentally or on purpose. A trial may have inclusion/exclusion criteria (e.g, < 50 years) that limits generalizability. 3/
Read 21 tweets
I’m literally melting, #epitwitter! So, let’s have some #epifoodwar fun!

What’s your favorite cool-down treat?
If you had to pick only one of these 4 ice cream flavors to eat for the rest of forever, which would it be?

This is a #epifoodwar, so you gotta pick one! No 5th options allowed! 😆
At #ser2018, I saw an iced custard stand which sounded weird but now I regret not trying. Where can I get some near Boston?

What other variants on ice-based dessert treats have I never heard of? Share your local fav!!
Read 4 tweets
If the amazing, cutting edge, in-depth discussions on #EpiTwitter make you feel both *inspired and incompetent*

(out-of-your-depth, totally lost, etc)

Here is your reminder that this is TOTALLY OK!

👇🏻 #SendingToMyself 🧵
Not all methods/issues are relevant to everyone’s work so there’s no reason you should be fluent in all of Epi.

In fact, you can’t be.

What you can be is the expert that I know I can go to when I come across something new that overlaps with your area!
#EpiTwitter is not here to make you an expert on everything.

These discussions & #Tweetorials are here to give you an idea of when things you work on might go wrong and to let you know who can be your phone-a-friend when it does.
Read 6 tweets
@statsepi @ashtroid22 @Epi_D_Nique @healthstatsdude @stephensenn (1/n) The problem Senn is referring to here, was solved by Mindel C. Sheps in NEJM in 1958. I proposed a counterfactual causal model that formalizes the intuition behind her argument in this paper:…
@statsepi @ashtroid22 @Epi_D_Nique @healthstatsdude @stephensenn (2/n) Consider this example: If people both Russia and Norway are randomized to play Russian Roulette at the end of every year, and the baseline risk of death in a year i 0.5% in Norway and 1.0% in Russia: Calculate how many people will die in the active arm in each country.
@statsepi @ashtroid22 @Epi_D_Nique @healthstatsdude @stephensenn (3/n) If you do the maths, you will find that 17.5% die in the active arm in Russia, and 17.1% die in the active arm in Norway. This means risk ratio is 17.5 in Russia and 35 in Norway. Odds ratio is 21 in Russia and 41 in Norawy, and survival ratio is 5/6 in both countries
Read 10 tweets
I’ve been getting a lot of new followers lately, so how about an #epitwitter #ScholarSunday so newcomers can get connected to our lovely community!

Here’s a thread of some of my suggestions for who to follow & why! Add your own in the comments👇🏼
Looking for some academic career advice? Have questions about writing grants? Want tips on making delicious pizza or pie? Head on over to @BillMiller_Epi!
Want support for how to #liveyourbestlife, learn to say ‘no’, or throw an amazing party? You’ll be wanting to follow @lisabodnar!
Read 6 tweets
Related to the discussion in this thread👇🏼, here’s a short thread on something I else I’ve been mulling over lately re: Hill’s criteria

#epibookclub #EpiPeoplesHealth #epitwitter

Is there any way in which they be considered a theory of epidemiologic causation?
If not, & they’re instead just tool for thoughtful evaluation of evidence, can they be applied to non-quantitative evidence or non-causal questions?
Read 4 tweets
And if you’re wondering what you can do, #epitwitter, an email is a good start


And then maybe head over to @LittleMissFlint’s page & help her with her latest fundraising goal
Read 3 tweets
Should @PWGTennant put his #epitwitter tattoo on his neck, yes or no? Poll in next tweet👇🏼
Neck tattoo poll!
The people demanded, and @PWGTennant provided!!

#epinecktattoo #ser2019
Read 3 tweets
Excited to hear @lisabodnar & @ProfMattFox’s #SPER2019 keynote!! Just as soon as the technical issues get fixed 😬😬
Is twitter a dumpster fire?
Read 33 tweets
@KemiDoll @AdanZBecerra1 @WhitneyEpi That is not just a critque of racial disparity analysis, that is a significant vote of non-confidence in the current regression industry in contemporary epidemiology and public health in general. #Epitwitter #statstwitter #scitwitter
@KemiDoll @AdanZBecerra1 @WhitneyEpi "In this article, we highlight empirical examples from the literature demonstrating limitations of overreliance on interaction terms in health disparities research; we further suggest approaches for moving beyond interaction terms when assessing these disparities" #Epitwitter.
@KemiDoll @AdanZBecerra1 @WhitneyEpi This quote from the abstract applies in general, as regression against interactions is provably mathematically incapable of resolving the strongly geometric feed-backs that dominate population health. #epitwitter
Read 4 tweets
Something I’ve thought of posting for awhile:

My personal manifesto on vaccines in the context of measles outbreaks and as an Epi PhD student with a small child under the age of 1.

A thread.

Grab some popcorn and settle in.

#Parenthood #StudentParent #EpiTwitter
A bit of background: We have family and many friends who live on #VashonIsland (known for having low rates of immunization).

My undergraduate thesis looked at school rates of vaccines on Vashon and found no #herdimmunity for ANY vaccine preventable disease in 2012.
Vashon is an evil genius’ dream for an outbreak.

There are 2 grocery stores, where everyone shops.

The schools share facilities, have student mentor exchanges, etc.

There are regular student trips to the 1 senior center.

Did I mention it’s an island?

It's dry tinder.
Read 12 tweets
A few people have DMed me about career advice as in "How do I get started in statistics?" I'm not where I want to be in life yet! But I have switched fields *multiple* times. So here are my tips on moving from insider to outsider ...
#epitwitter #statstwitter #datascience
1. Google a few people who started where you are and got to where you want to be. Look at their resume, work backwards and copy what they did. (This doesn't always work, especially if you are the first person like you.)
2. Find a person who's where you want to be. Tell them your background honestly. If they tell you that you aren't suited to their industry, ignore that for now. Get them to name one concrete gap that you have. Fill the gap. If you don't know how, then ask. Repeat as needed.
Read 9 tweets
The reductionist view of economists like @kevinmilligan, @GK_Fellows, & @trevortombe that healthcare and public health can be summarized or even reasoned about in terms of costs and returns on investments is the bane of my existence. #EpiTwitter #SciTwitter #StatsTwitter
The opinions of economists like @kevinmilligan, @GK_Fellows, & @trevortombe buoy up the worst instincts and shallowest decisions of healthcare administrators around the world. It is a constant battle of my career. #EpiTwitter #SciTwitter #StatsTwitter
Public health outcomes exist within a multi-dimension, perhaps even infinite dimensional, space of hazard functions, none of which is susceptible to the techniques of economic analysis. @kevinmilligan @GK_Fellows @trevortombe #EpiTwitter #SciTwitter #StatsTwitter
Read 5 tweets
ICYMI #epitwitter today.
Super-interesting stuff on interaction vs effect modification (and beyond)
And an econ vs epi showdown! Learned a lot.
Good discussion/resources on bootstrapping.
Read 6 tweets

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