Preteen children's health related quality of life in Sweden : Changes over time and disparities between different sociodemographic groups
Background: Assessing disparities in health-related quality of Life (HRQoL) is important as a part of health-related disparities in the society. The aim of this study was to explore HRQoL among 12-year-olds in Sweden in terms of differences between years 2005 and 2009 and disparities related to sociodemographic background. Methods: During the school years 2005 and 2009, a total of 18,325 sixth gra
