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Unadjusted Associations of eFI and Area Deprivation Categories with Acute Healthcare Utilization
| Variable | Event count/rate per 100 person years | Unadjusted HR (95% CI) | P-value |
|---|---|---|---|
| eFI category | |||
| Fit | 2208/19.1 | Reference | |
| Pre-frail | 9688/37.5 | 1.97 (1.85–2.10) | < 0.001 |
| Frail | 8669/87.3 | 4.60 (4.30–4.92) | < 0.001 |
| Area deprivation | |||
| Low (lowest 50%) | 8662/37.9 | Reference | |
| Mid (mid 35%) | 7400/43.2 | 1.14 (1.09–1.20) | < 0.001 |
| High (top 15%) | 4503/61.0 | 1.61 (1.52–1.71) | < 0.001 |
