You're mostly correct. They're comparing groups with "emergency visits." One with trannies, one without, and one for people who have had a vasectomy or "tubal ligation." There's a fourth group with pharyngitis (a sore throat?), but it's not clear to me what is significant about that.
It also isn't clear to me that they're even taking data directly following trans surgery, rather just whatever the emergency visit is.
The study involved four cohorts: cohort A, adults aged 18-60 who had gender-affirming surgery and an emergency visit (N = 1,501); cohort B, control group of adults with emergency visits but no gender-affirming surgery (N = 15,608,363); and cohort C, control group of adults with emergency visits, tubal ligation or vasectomy, but no gender-affirming surgery (N = 142,093).
Propensity matching was applied to cohorts A and C. Data from [dates] were analyzed to examine suicide attempts, death, self-harm, and post-traumatic stress disorder (PTSD) within five years of the index event.
A secondary analysis involving a control group with pharyngitis, referred to as cohort D, was conducted to validate the results from cohort C.
I think all of groups B through D are meant to represent general population in some fashion - anyone who’s ever turned up in the emergency room (basically could be anyone), anyone who’s ever turned up in the emergency room or had surgery on their junk for reasons unrelated to troonery (another flavor of “could be anyone”), and anyone who’s ever gone to the doctor for a sore throat (third flavor of “could be anyone”).
The reason why the control groups aren’t pure general population (without these criteria about ER visits, etc.) is because the database they’re analyzing is a database on health insurance claims, so people only show up in the database if they’re visiting a doctor. So the control groups are more or less constructed as “people who have gone to the doctor for the most generic reason possible”, to more or less represent gen pop.
And yep, it was 5-year suicide attempt risk rather than 1-year. I misread that.
You're mostly correct. They're comparing groups with "emergency visits." One with trannies, one without, and one for people who have had a vasectomy or "tubal ligation." There's a fourth group with pharyngitis (a sore throat?), but it's not clear to me what is significant about that.
It also isn't clear to me that they're even taking data directly following trans surgery, rather just whatever the emergency visit is.
Archive link to the full abstract: https://archive.ph/OfIco
I think all of groups B through D are meant to represent general population in some fashion - anyone who’s ever turned up in the emergency room (basically could be anyone), anyone who’s ever turned up in the emergency room or had surgery on their junk for reasons unrelated to troonery (another flavor of “could be anyone”), and anyone who’s ever gone to the doctor for a sore throat (third flavor of “could be anyone”).
The reason why the control groups aren’t pure general population (without these criteria about ER visits, etc.) is because the database they’re analyzing is a database on health insurance claims, so people only show up in the database if they’re visiting a doctor. So the control groups are more or less constructed as “people who have gone to the doctor for the most generic reason possible”, to more or less represent gen pop.
And yep, it was 5-year suicide attempt risk rather than 1-year. I misread that.