Analysis of ceiling effect and score distribution of outcome measures in juvenile idiopathic arthritis (JIA)

Results Frequency of ceiling effect for each measure is shown in table 1. Physician global assessment revealed a tendency towards normal distribution, whereas all other measures were skewed towards the normal end of the scale. However, physician global assessment scores tended to cluster at the two ends of the scale (i.e. towards the 0 and 10 scores). In 69.2% of the visits CHAQ score was > 0.5%. In 19.9% of the visits 5 or more active joints were detected.