Recent comments in /f/science

Lcokheed_Martini t1_jeghkia wrote

Directly? No because if there was a simple ipso facto causation it would have the same impact across all socio economic groups in the a similar way. The pandemic was experienced very differently by different groups in this country—and economic status was one of the clearer correlations in different effects.

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SockCucker3000 t1_jegd5o8 wrote

I'm 25 and have been on a conveyer belt of various medications for 12 years. I was on Klonopin for a decade and only recently got off it. Long-term use of Klonopin causes a 51% increased risk of Alhzeimer's later in life. I've had episodic memory issues since roughly the same time I went on Klonopin.

I don't want any child to be drugged, much less with something that could lead to horrifying long-term effects. These kinds of studies and advancements give me hope.

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joxeloj t1_jegaunh wrote

You're correct that many of the p-values are off. Even some of their Fisher Exact tests are off (e.g. I get p=0.47 for hypertension). I think they probably used Mann-Whitney U tests after a Shapiro-Wilk's p<0.05 for many of these, but I can't prove that without access to their data. It is odd overall.

I will point out they claim to test their primary hypothesis by ANCOVA accounting for baseline values, and randomization is not necessarily pointless even if you don't end up with well-balanced groups by specific endpoints. With that said you could probably get a response published on the basis of some of these discrepancies.

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Mammoth-Mud-9609 t1_jeg7nlk wrote

It is important because gun deaths also includes a substantial amount of domestic violence cases, there is an attempt by a minority of people to portray gun deaths as just gang members killing each other or occasional innocent member of the public, the truth is that gang violence accounts for a relatively small amount of gun deaths in America and you are more likely to die of a gunshot wound if you own a gun than if you don't.

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tom_swiss t1_jeg6g70 wrote

It would be "factually accurate" to label a subset of vehicle-vehicle collisions and vehicle-pedestrian collisions "iPhone related", if a driver or pedestrian was listening to music or using GPS on a iPhone at the time.

But that "iPhone relationship" is only relevant in a small number of cases, so it would be intellectually dishonest.

Firearms were available before the pandemic. Their availability did not increase during the pandemic. Firearms are not the relevant factor here.

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marketrent OP t1_jeg6fr4 wrote

Excerpt from the linked summary^1 about research published in City and Environment Interactions:^2

>First author Dr Jamie Kelly, who conducted the research while based at UCL Geography before moving to the Centre for Research on Energy and Clean Air, said: “We were surprised to find how pervasive the contribution of agricultural emissions of ammonia to particulate pollution really is.

>“Particulate pollution across the UK is dominated by aerosols formed from rural agricultural emissions of ammonia. This influence extended from rural areas to mid-sized cities like Leicester, large cities like Birmingham and, for the UK, anomalously large cities like London.

>“This is because ammonia and aerosol particles can stay suspended in the atmosphere for days to a few weeks and so be transported long distances.”

>This kind of fine particulate pollution can have serious health effects, with estimates saying it may contribute to between 29,000 and 99,000 additional premature deaths each year in the UK.

>&nbsp;

>The team ran multiple simulations with different pollution sources turned on and off, to see how each source contributed to the spread of particulate pollution.

>They found that UK agriculture contributed 38% of the particulate pollution in Leicester and 32% in Birmingham. Even in large cities like London, agriculture contributed 25% of the city’s pollution.

>Cities only contributed between about 13-24% to their own pollution, mostly from traffic, energy production, industry, and furnaces in commercial and residential locations.

>Senior author Dr Eloise Marais (UCL Geography) said: “Our work has identified that addressing urban air pollution doesn’t only require local solutions like ultra-low emission or clean air zones, but also national-scale measures that reduce ammonia emissions from rural agriculture.

>“Such actions have potentially large health benefits, as the fine particulate matter pollution formed from ammonia is a leading global health risk.”

^1 University College London, 31 Mar. 2023, https://www.ucl.ac.uk/news/2023/mar/farms-found-be-biggest-particulate-pollution-source-citie

^2 Jamie M. Kelly et al. Diagnosing domestic and transboundary sources of fine particulate matter (PM2.5) in UK cities using GEOS-Chem. City and Environment Interactions 18, 100100 (2023). https://doi.org/10.1016/j.cacint.2023.100100

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