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Distribution characteristics and reliability of the PSO-LIFE questionnaire in psoriasis patients (active and inactive): n = 304
| 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 |
*Proportion of patients with a missing response on at least one item.
