Fig. 2From: Patient-reported advantages and disadvantages of peritoneal dialysis: results from the PDOPPSDistribution of ADS, by country. Patient responses are coded −2 (major disadvantage) to + 2 (major advantage). A higher score, calculated from this Likert scale, reflects a more favorable perception of PD. “I do not know” was treated the same as “neither advantage nor disadvantage”Back to article page