Transgender identity in young people and adults recorded in UK primary care electronic patient records: retrospective, dynamic, cohort study.

Adding an interaction term ((2009 or earlier/2010 or later)*(age group)) to the multivariable modelling showed a highly significant interaction (P<0.0001)—that is, the association between new trans recordings or trans proportions and age group differed between 2000 and 2009 and 2010 and 2018.

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