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. 2006 Apr;15(2):92–97. doi: 10.1136/qshc.2005.015453

graphic file with name qc15453.f1.jpg

Figure 1 Boxplot of pilot ward medication safety inventory scores. Bold line =  median score; bottom of box = first quartile (Q1); top of box = third quartile (Q3); lines  =  1.5 × interquartile range (IQR) = Q3 − Q1; open circles = outliers.