Gender differences in trajectories of health-related quality of life from childhood to adolescence in a 7-year follow-up study in a urban socially disadvantaged sample from Argentina.

HRQoL scores decrease during the transition period from childhood to adolescence, with girls showing the greatest decrease. There were also socioeconomic inequalities in the evolution of HRQoL in a context characterized by social segregation and economic crisis, possibly aggravated by the COVID-19 pandemic.