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Description and homogeneity of Groningen Frailty Indicator (n = 390)
| Scale | No. of items | Mean (SD) | Minimum–maximum | Cronbach’s alpha |
|---|---|---|---|---|
| Total score | 15 | 6.8 (3.4) | 0–15 | 0.81 |
| Physical | 9 | 3.3 (2.4) | 0–9 | 0.77 |
| Cognitive | 1 | 0.1 (0.3) | 0–1 | Not applicable |
| Social | 3 | 2.0 (1.0) | 0–3 | 0.56 |
| Psychological | 2 | 1.4 (0.8) | 0–2 | 0.78 |
