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Table 1 Baseline characteristics of patients stratified by frailty status according to the Clinical Frailty Scale and the FRAIL Scale

From: Frailty as a predictor of hospital length of stay after elective total joint replacements in elderly patients

  Total patients (N = 87) Clinical Frailty Scale FRAIL Scale
   Robust (n = 40) Not robust (n = 47) p-value Robust (n = 13) Not robust (n = 74) p-value
Age (median (IQR)) 72.0 (9.0 71.0 (8.0) 73.0 (11.0) 0.145 73.0 (6.0) 71.5 (9.0) 0.330
Gender (female) (%) 57 (65.5) 21 (52.5%) 36 (76.6%) 0.018 4 (30.8%) 53 (71.6%) 0.009
Disposition before surgery (%)  
- Home with loved ones 50 (57.5%) 30 (75.5%) 20 (42.6%) 0.02 8 (61.5%) 42 (56.8) 1.00
Charlson comorbidity index (median (IQR)) 4.0 (1.0) 4.0 (1.0) 5.0 (1.0) 0.273 5.0 (1.0) 4.0 (1.0) 0.239
Fully independent (%) 76 (87.4) 38 (95%) 38 (82.6%) 0.058 0 11 (14.9%) 0.205
BMI (mean ±SD) 30.5 ± 6.4 28.3 ± 4.7 32.3 ± 7.0 0.002 28.1 ± 3.1 30.9 ± 6.7 0.02
Baseline Hb (median (IQR)) 135.0 (16.0) 139.0 (20.0) 134.0 (12.0) 0.109 146.0 (19.0) 134.0 (16.0) 0.004
  1. SD: standard deviation; BMI: body mass index; Hb: hemoglobin; IQR: interquartile range