Key variable baseline values and change over time (baseline to follow-up) as a function of transition status.

All associations adjusted for age, sex and high-risk sibling status.# Tests whether change over time is significantly different for transition versus non-transition participants.*Change over time calculated separately for transition and non-transition participant.ACAPE positive symptoms, higher scores indicating increased frequency of symptoms.BCAPE negative symptoms, higher scores indicating increased frequency of symptoms.CQuality of life − physical health, higher scores indicating better quality.DQuality of life − mental health, higher scores indicating better quality.EQuality of life − social relationships, higher scores indicating better quality.FQuality of life − environment, higher scores indicating better quality.GPremorbid adjustment, higher scores indicating more social isolation, fewer peer relationships, worse functioning outside family and worse school functioning.