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Table 3 Unmatched analysis—admission characteristics of dialysis patients and controls

From: Total knee arthroplasty in dialysis patients: a national in-patient sample-based study of perioperative complications

Variable

Dialysis group (n = 418)

Control group (n = 557,953)

Significance

Odds ratio 95% CI

Age in years at admission (years)

65.4 (SD = 9.8)

66.7 (SD = 9.5)

 < 0.001

(5.3, 5.5)

Length of stay (days)

3.8 (SD = 2.8)

2.3 (SD = 1.9)

 < 0.001

(0.4, 0.4)

Total charges (USD)

91,434.3 (SD = 69,572.1)

64,791.1 (SD = 45,806.7)

 < 0.001

(3985.9, 4989.3)

Elective versus non-elective admission

535,229 (96.1%)

380 (90.9%)

 < 0.001

(0.3, 0.6)

Tobacco-related disorder

48 (11.5%)

88,321 (15.8%)

0.01

 

Diabetes without complications

14 (3.3%)

82,450 (14.8%)

 < 0.001

 

Diabetes with complications

0.2%

1403 (0.3%)

 < 0.001

 

Patient disposition

    

 Home/routine

98 (23.5%)

207,368 (37.2%)

 < 0.001

 

 Short-term hospital

0.7%

1315 (0.2%)

 < 0.001

 

 Another type of facility

159 (38%)

103,390 (18.5%)

 < 0.001

 

 Home healthcare (HHC)

156 (37.3%)

245,044 (43.9%)

 < 0.001

 

 Left against medical device (LAMA)

0.2%

329 (0.1%)

 < 0.001

 

 Died

0.2%

197 (0.04%)

 < 0.001

 
  1. Bolded values indicate statistical significance
  2. Numbers between 1 and 10 were not reported as per healthcare cost and utilization project (HUCP) data agreement
  3. SD, standard deviation