So, I’m not really good with statistics but I need some help in determining the sample size for my study. I want to do a pre-intervention/post-intervention study in the same group of people. In the study I would measure my outcome in the population before my intervention, then, in the same population, I would implement my intervention and measure the outcome then. So I opened WinPepi to help calculate my sample size. I went to Compare2, opened Sample size, clicked on Change (using before-after ratings) and then input the parameters of my study and hit calculate. The calculator than said that ..read more

Hi all. I work as a health quality analyst at an insurer. I'm being asked to evaluate if an intervention to reach out to members by phone led to improved health quality metrics. We did not randomize the phones because without informed consent it would be unethical to provide outreach to one half and withhold from the other. This leads to the question of how to best evaluate. So far the best I've come up with is to compare members we did reach by phone to those we did not. This is not a perfect cohort design, but I'm otherwise at a loss for how to do this with academic rigor. The other issue i ..read more

Do you all accept requests to provide peer review? Peer review is of course critical, but I don’t love how so much science is gated and how journals and not scientists benefit financially from the process. Like, I would work for free on this if I knew everyone else was, otherwise I feel like my labor is being exploited and they count on me doing it anyway because they know that as a scientist I value the process. submitted by /u/rad_town_mayor [visit reddit] [comments ..read more

For me, not trained as an epidemiologist but working with many, I struggle to remember what certain study design terms actually mean. I have a background in engineering so I am a working scientist it's just that the names of epi study designs seem to make no sense to me. Any help? Specifically I work with air pollution epidemiology if that helps. submitted by /u/investoroma [visit reddit] [comments ..read more

Welcome to the r/epidemiology Advice & Career Question Megathread. All career and advice-type posts must posted within this megathread. Before you ask, we might already have your answer! To view all previous megathreads and Advice/Career Question posts, please go here. For our wiki page of resources, please go here. submitted by /u/AutoModerator [visit reddit] [comments ..read more

I’m beginning my MPH with a concentration in Epi this August. I’m beyond excited and eager to immerse myself in some of the more important content. I’d love to hear both fiction and nonfiction, documentaries, thrillers, podcasts. Really anything with some interesting epidemiological significance. I started the audiobook The Ghost Map by Steven Johnson and I’ve enjoyed it so far! I’m particularly interested in HIV/AIDs, LGBTQ+ health, social epi, and disparities. submitted by /u/cooky- [visit reddit] [comments ..read more

I've recently come across consensus AI and semantic scholar, which have been incredibly useful in streamlining literature reviews on health topics. As a result, I'm actively seeking out additional tools to help with literature synthesis, analysis, and writing to further enhance my efficiency. Any fellow epidemiologists out there with recommendations for free or low-cost software that has been beneficial in your work? Note: I'm already familiar with ChatGPT and copilot, but if there's others that are useful for epi work please share. Thanks in advance! ? submitted by /u/bugeyedmel [visit redd ..read more

Hello, I am calculating annual incidence rates over time by ZCTA for a time enabled map in ArcGIS pro. Historically I have just used the ending year of the 5 year estimate to calculate each year. I’ve come across the overlapping rule where you shouldn’t compare overlapping estimates to each other. Does that still apply when you’re calculating annual incidence? Say I’m calculating incidence for each year from 2018-2022, would I use the 2018-2022 estimate as the denominator for each annual rate or should I use 2014-2018, 2015-2019, 2016-2020, 2017-2021, and 2018-2022 as the denominators? I don ..read more

I’m curious how to calculate the spread rate of a virus and how that would be calculated? submitted by /u/Hottwheels343 [visit reddit] [comments ..read more

A ..read more