Table 3 Internal consistency and test-retest reliability for the EPP-Qol subscales
|  |  | Total sample visit 3–4 | Stable only patients | |||
|---|---|---|---|---|---|---|
|  | Cronbach’s alpha | ICC | Pearson’s r | ICC | Pearson’s r | T test |
EPP Symptoms | 0.954 | 0.809 | 0.680 | 0.543 | 0.373 | t = 1.91, n.s. |
EPP Wellbeing | 0.880 | 0.831 | 0.711 | 0.192 | 0.115 | t = −1.56, n.s. |