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Table 2 Distribution characteristics and reliability of the PSO-LIFE questionnaire in psoriasis patients (active and inactive): n = 304

From: Validation of a new tool to assess health-related quality of life in psoriasis: the PSO-LIFE questionnaire

 

Mean

SD

Missing items*

Observed range

Floor (%)

Ceiling (%)

Cronbach’s alpha

ICC

PSO-LIFE overall score

64.9

22.4

4.6%

10-100

0%

3.2%

0.95

0.98

  1. *Proportion of patients with a missing response on at least one item.