1/n A pedido de un amigo que me la pidió en español (no tengo muchos seguidores que puedan hacer uso) va mi análisis sobre la edad de las hospitalizaciones en AMBA. El original acá:
2/n Un amigo me preguntó muy preocupado hace unos días que hay de verdad sobre todos los médicos que salen a decir que cada vez hospitalizan gente más joven en Argentina/AMBA.

El diagnóstico: "Anecdotitis"
3/n Cuando alguien con entrenamiento científico es confrontado con una 'verdad', lo primero que hace es tratar de saber más al nivel de detalle. Ya se lo que estas pensando. Te digo que los científicos son una especie rara y en peligro de extinción (y no aparecen en televisión).
4/n Lo primero que un científico con 2 dedos de frente hace es investigar los datos. Entonces el primer paso es ir a los datos publicados por el ministerio de salud y ver cual es la distribución de mortalidad. Nada fuera de lo esperado.
5/n Luego es ir a ver directamente las hospitalizaciones. Por suerte esa información está, solo tenemos que filtrar por día de hospitalización. Interesante, la mediana es 58 años, definitivamente hay algo en esta afirmación.
6/n Pero es importante un detalle. Mi amigo dijo: "que recientemente". OK, si para todos los datos era 58 años, veamos cual es la distribución en el último mes y medio... Por un momento casi que me había asustado. Otra vez arriba de 60. Vos también estas oliendo eso?
7/n Esto me hizo pensar, con el tema del protocolo COVID los hospitales que tratan casos probablemente reciben fondos extra (como en otros paises). Si fuera a hospitalizar gente que no lo necesitaría tanto, cuando sucedería? Obviamente antes del tope de la primera ola. A veeer!!!
8/n Aquí está, anecdotitis. No me gusta incinerar a aquellos que están haciendo su trabajo lo mejor que pueden en una situación precaria, pero los médicos de internación son especialmente propensos a caer en el bias de confirmación. Como ven los peores casos, se pierden el bosque
9/n Por FAVOR!!! Periodístas, pregunten a los que entienden como trabajar con las estadísticas y dejen a los medicos hacer lo que saben hacer EXCELENTEMENTE BIEN que es tratar a las personas enfermas. Me pueden citar: "NO, no se está internando gente más joven en Argentina."
10/n El problema sucede porque según los datos antes veían menos casos graves en el ICU e incluso en el piso. Hoy solo ven los peores casos, porque al resto los mandan a su casa. Eso instiga una visión desproporcionadamente parcial y erronea de la realidad.
11/n Salir a decir en la televisión y en los diarios este tipo de cosas cuando no es verdad está mal (incluso si estando ahí en medio del quilombo da la sensación que es verdad).

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More from @federicolois

18 Apr
1/n A friend asked me a few days ago what was true about the saying of medics about younger people being hospitalized more often recently in Argentina.
The results are in and the diagnosis is: "Anecdotitis".
2/n Like any scientists that is confronted with some 'truth', you try to figure out the nitty gritty details of it. I know what you are thinking, but scientists are a pretty rare species nowadays. I would say an endangered species.
3/n The first thing anyone with at least 2 fingers of forehead is to go to the case file and look at the distribution of death. Well, not unexpected AT ALL.
Read 9 tweets
17 Apr
1/n If you are going to call someone an antivaxxer just make sure that the person in question may know *a bit* more than you about the topic in question. And can actually show proof he is NOT. Think once, think twice, THINK before embarrassing yourself!!!
2/n But you know, I may have converted to being an antivaxxer recently (that would be a good escape). I just think that what antivaxxer parent would vaccinated their kid 2 weeks ago on the 5th of April of 2021
3/n Why do I do this? Why do I willingly show the vaccination history? Because I am tired of people that has not done the research to judge in binary terms something that it is not. If you haven't done the research it is on you, not me.
Read 4 tweets
16 Apr
1/n I find it interesting the poor understanding of risk by medical professionals. Just for the record, I am pro-vaccines, but I am anti-ignorance more. If you have risk from 2 independent events (covid positive and vaccination) the risk gets added.
2/n From probability we know that: P(A or B) = P(A) + P(B) + P(A and B)
For context, what is the probability of dying from COVID-19 or dying from Vaccine Adverse reaction.
3/n Purist would say then that we need to take the conditional probability, so the formula would be:
P(dying | COVID-19 or Vaccine) = P( dying | COVID-19 ) + P( dying | Vaccine ) + P( dying | COVID-19 and Vaccine )
Read 8 tweets
9 Apr
Can someone tell me if I am getting this right? If I haven't been proved positive of SARS-Cov-2 by either PCR or Antibodies authors can still count me as #LongCOVID anyways and Journal editors disagree with that? Mhhh, that sounds like Journal doing some science for change.
Apparently I was getting it right. So 39% of the sample was actually positive for SARS-Cov-2, while probably the whole sample was positive for "Probable Acute Viral Infection". NOW, the last phrase in statistics have a known name: "Crapping on your sample".
But let's follow on the 'false-negatives' if 61% of your sample are false-negative, can anyone explain to me: Why are we testing?
Read 4 tweets
6 Apr
1/n Update on my home-town 'interesting' SARS-Cov-2 'non-situation'. If you haven't read the thread I am citing, read that one first because this is an update on that.
2/n As I stated there I have been tracking the disease there because my parents and my grandparents live there. So, I have invested interest into understanding the situation.
3/n I also know the infectious disease expert in charge there too and I discussed with her the strategy back in August after they detected their first 50 cases and we did a estimation on the sizing of the hospital ICU care necessary and final death toll.
Read 12 tweets
19 Mar
@martinmoline @Gus_Noriega @nytimes 1/n Vamos a hacer una cosa, el que no entiende de ciencia te va contar algo que obviamente vos ya sabes, pero decime donde me estoy equivocando.
@martinmoline @Gus_Noriega @nytimes 2/n Ritter et al. [1975] “the wearing of a surgical face mask had no effect upon the overall operating room environmental contamination.” Oops. pubmed.ncbi.nlm.nih.gov/1157412/
@martinmoline @Gus_Noriega @nytimes 3/n Ha’eri and Wiley [1980] le pusieron microesferas de albumina al interior de las máscaras (source control) y las buscaron en las heridas luego de 20 operationes. “Particle contamination of the wound was demonstrated in all experiments.” Mhhh. europepmc.org/article/med/73…
Read 14 tweets

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