Table 2 Main characteristics and reasons for readmission within the 30-day time period ( n  = 656)

Age (years ± SD)

78.2 ± 11.3

Males (n, %)

272 (41.5%)

Females (n, %)

384 (58.5%)

Cardiovascular disease

192 (29.3%)

Pulmonary disease

195 (29.7%)

Gastrointestinal disease

110 (16.8%)

Neoplastic disease

82 (12.5%)

Neurological disease

66 (10.1%)

Hematological disease

21 (3.2%)

Surgery disease

3 (0.5%)

Kidney disease

44 (6.7%)

Miscellaneous

186 (28.4%)

Length-of-hospital stay (days)

8.4 ± 6.8

Days prior to admission (days)

13.3 ± 8.5