Fig. 2

PISA by the type and duration of dialysis. The solid line represents HD; the dotted line represents PD; the middle line represents the median; the boxes represent the interquartile range; the circle outside the maximum lines represents patients on HD with PISA values larger than the upper quartile plus 1.5 times the interquartile range; the black triangle represents the same for patients on PD; only patients with complete data were included (n = 65; patients with missing data, n = 24 (27%)