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Table 4 Generalized Linear Regression Analysis of Length of Stay and Hospital Costs

From: Influence of frailty and its interaction with comorbidity on outcomes among total joint replacement

Variable

ORa

95% CIb

P Value

Length of stay (days)

 40 to 64 years

-0.17228

[-0.20180– -0.14275]

 < 0.0001

 65 to 80 years

-0.07707

[-0.10659– -0.04755]

 < 0.0001

  > 80 years

0.45668

[0.42602–0.48733]

 < 0.0001

 Female

-1.95904

[-1.96905– -1.94903]

 < 0.0001

 Emergency/urgent admission

0.03105

[0.02409–0.03801]

 < 0.0001

 Medium bed size

0.10855

[0.09828–0.11881]

 < 0.0001

 Large bed size

0.22233

[0.21324–0.23142]

 < 0.0001

 Teaching hospital

0.12199

[0.11495–0.12904]

 < 0.0001

 Urban hospital location

0.00993

[-0.00096–0.02082]

 < 0.0001

 Non-Frail, CCIc = 1

0.18586

[0.11042–0.26129

 < 0.0001

 Non-Frail, CCI = 2

0.24974

[0.17365–0.32584]

 < 0.0001

 Non-Frail, CCI ≥ 3

0.44118

[0.36514– 0.51723]

 < 0.0001

 Frail, CCI = 0

1.53533

[1.09748–1.97318]

 < 0.0001

 Frail, CCI = 1

0.57325

[0.38423–0.76227]

 < 0.0001

 Frail, CCI = 2

0.58512

[0.46956–0.70068]

 < 0.0001

 Frail, CCI ≥ 3

1.31211

[1.23151–1.39271]

 < 0.0001

Cost of hospitalization (Dollars)

 40 to 64 years

$-5122.97

[-5509.2– -4736.8]

 < 0.0001

 65 to 80 years

$-6494.01

[-6880.1– -6107.9]

 < 0.0001

  > 80 years

$-6415.72

[-6816.7– -6014.7]

 < 0.0001

 Female

$-7194.00

[-7325.0– -7063.0]

 < 0.0001

 Emergency/urgent admission

$-1626.37

[-1717.7– -1535.0]

 < 0.0001

 Medium bed size

$2816.81

[2681.8–2951.8]

 < 0.0001

 Large bed size

$3434.61

[3315.5–3553.7]

 < 0.0001

 Teaching hospital

$-1701.21

[-1793.7–-1608.7]

 < 0.0001

 Urban hospital location

$11,664.11

[11522.2–11,806.0]

 < 0.0001

 Non-Frail, CCI = 1

$3151.7

[1899.9–4403.4]

 < 0.0001

 Non = Frail, CCI = 2

$3630.6

[2367.9–4893.4]

 < 0.0001

 Non-Frail, CCI ≥ 3

$5443.3

[4181.4–6705.2]

 < 0.0001

 Frail, CCI = 0

$26,426.7

[19202.9–33,650.6]

 < 0.0001

 Frail, CCI = 1

$13,345.7

[10213.9–16,477.5]

 < 0.0001

 Frail, CCI = 2

$13,885.7

[11966.2–15,805.1]

 < 0.0001

 Frail, CCI ≥ 3

$16,748.2

[15409.8–18,086.6]

 < 0.0001

  1. CCI Charlson comorbidity index
  2. aOR Odds Ratio
  3. bCI: Confidence Interval
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BMC Musculoskeletal Disorders

ISSN: 1471-2474

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