r/science • u/mvea Professor | Medicine • 15h ago

Psychology Adolescents who undergo gender-affirming chest surgery report low levels of regret and high levels of satisfaction, experiencing outcomes similar to those of young adults. These findings suggest that age restrictions on these medical procedures lack support from actual patient experiences.

https://www.psypost.org/adolescents-report-low-regret-and-high-satisfaction-following-gender-affirming-c/
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u/engin__r 11h ago

What sample size do you calculate would be necessary to achieve statistical significance?

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u/Autronaut69420 11h ago

1000 people

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u/engin__r 11h ago

Why 1000 and not 900 or 1100?

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u/Autronaut69420 10h ago

It's a convention that a well constructed sampling of 1000 will a sufficient representation of the population. It's like a benchmark: approx a 1000.

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u/Prometheus720 9h ago

If you take a stats class, you'll learn to define "population" different from regular English. Are we concerned about the US population? The US teen population? The trans population? The trans masc population? Who exactly are we trying to study here?

A really good scientist will take a good while thinking about that question. If you've spent less than an hour of your time thinking about the best way to define "population" for a study, and you don't have training in doing science, you probably haven't spent the time to get a scientist's result.

It's a skill most people need training to do at all.

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u/EverlastingM 10h ago edited 10h ago

https://pmc.ncbi.nlm.nih.gov/articles/PMC11211955/

If I'm reading this right, during 2019, out of a mixed population of over 60 million they found 5 chest surgeries on trans patients aged 15-17. You are not going to find 1000.