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Table 1 Characteristics of the study population

From: Derivation of a frailty index from the interRAI acute care instrument

Characteristic

N = 1418

Age (years) mean (SD)

81.0 (6.8)

Females n (%)

780 (55.0%)

Length of stay (days) median (IQR)

6 (4–11)

Admitted from:

 - Community

1236 (87.2%)

 - Other hospitals

11 (0.8%)

 - Residential aged care (low care)

85 (6.0%)

 - Residential aged care (high care)

85 (6.0%)

Discharged to:

 - Community

919 (64.8%)

 - Post-acute care (including rehabilitation)

234 (16.5%)

 - Residential aged care (low care)

83 (5.9%)

 - Residential aged care (high care)

124 (8.8%)

 - Died in hospital

57 (4.0%)

Principal diagnosis on admissiona:

 - Circulatory system diseases

277 (19.6%)

 - Respiratory diseases

235 (16.6%)

 - Injuries

142 (10.1%)

 - Symptoms and signs

129 (9.1%)

 - Diseases of the digestive system

114 (8.1%)

 - Disorders of the genitourinary system

97 (6.9%)

 - Neoplasms

87 (6.2%)

  1. Notes.
  2. SD: Standard Deviation.
  3. IQR: Interquartile Range.
  4. aPrincipal diagnosis based on International Statistical Classification of Diseases and Related Health Problems, Tenth Revision (ICD-10).