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Table 1 Appropriate of admission and patient days.

From: Direct costs associated with the appropriateness of hospital stay in elderly population

  Patients Patient days Rate of inappropriateness days
  n (%) n (%) Rate (95% CI)
Total 724 (100) 3891 (100) 5.1 (3.4 – 5.9)
Sex    
Female 376 (51.9) 2118 (54.4) 5.0 (3.2 – 5.5)
Male 348 (48.1) 1773 (45.6) 5.2 (3–5 – 6.1)
Age (years)    
60–64 87 (12.0) 446 (11.5) 5.2 (3.3 – 5.8)
65–69 117 (16.2) 590 (15.2) 5.6 (3.8 – 6.1)
70–74 137 (18.9) 635 (16.3) 6.3 (4.6 – 6.9)
75–79 137 (18.9) 719 (18.5) 7.0 (5.6 – 7.4)
80–84 119 (16.4) 717 (18.4) 2.4 (1.3 – 3.2)
≥ 85 127 (17.5) 784 (20.1) 4.5 (2.5 – 5.4)
Service admitted to:    
Surgery 126 (17.4) 438 (11.3) 8.4 (6.5 – 9.2)
Internal medicine 598 (82.6) 3453 (88.7) 4.7 (4.1 – 5.3)
Appropriateness admission    
Yes 713 (98.5) 3856 (99.1) 5.0 (4.3 – 6.4)
No 11 (1.5) 35 (0.9) 17.1 (6.3 – 23.2)
Length of stay (days)    
1–2 213 (29.4) 320 (8.2) 2.2 (1.4 – 2.8)
3–4 200 (27.6) 687 (17.7) 5.7 (4.8 – 6.5)
5–6 131 (18.1) 717 (18.4) 4.0 (3.4 – 4.4)
7–8 69 (9.5) 505 (13.0) 4.0 (3.2 – 4.7)
9–10 33 (4.6) 313 (8.0) 4.8 (4.0 – 5.5)
≥ 11 78 (10.8) 1349 (34.7) 6.5 (6.1 – 6.9)
Number of comorbidities conditions    
0 125 (17.3) 488 (12.5) 5.3 (4.7 – 5.8)
1 71 (9.8) 385 (9.9) 9.4 (8.1 – 11.3)
2 169 (23.3) 938 (24.1) 5.1 (4.3 – 5.8)
3 174 (24.0) 992 (25.5) 3.1 (2.8 – 3.6)
≥4 185 (25.6) 1088 (28.0) 5.2 (4.9 – 6.3)