How many patients re-identify with their birth-registered sex? Rare findings from an Aussie gender clinic

This morning saw the release in JAMA Pediatrics of a new study looking at young patients referred to one of Australia’s state-funded paediatric gender clinics.
It attempts to shed light on one of the key controversies: what proportion of patients treated at these clinics will subsequently re-identify with their birth sex?
As the authors themselves acknowledge, despite clinical, social and media concerns regarding re-identification, there are few studies on this, and those that do exist on longitudinal gender identities have “methodological, theoretical and ethical limitations”.
Given the study’s rarity — certainly when it comes to gender clinics in Australia — it is worth going into some detail.