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Distribution (%, n) of reported problems in the EQ-5D-Y-3L dimensions, VAS mean value (SD) and VAS median, by age group and sex
Age in years; 13 years (n = 22), 14 years (n = 2230), 15 years (n = 118), 16 years (n = 2136), 17 years (n = 102), 18 years (n = 1966). Some and a lot of problems were collapsed into any problems when testing for significant differences
a p-value by Chi-square test
b p-value by Mann–Whitney U test
