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Table 3 Charlson comorbidity index, median length of hospital stay, observed in-hospital deaths and estimated adjusted relative risks of death in Germany, 2005-2006

From: Renal surgery for kidney cancer in Germany 2005–2006: length of stay, risk of postoperative complications and in-hospital death

       

Relative risk of in-hospital death

   

Length of hospital stay

Observed in-hospital deaths

Crude analysis

Adjusted analysis

Charlson

N

%

Median

P10-P90

N

%

RR

95% CI

RR

95% CI

0

11,687

49.2

11

8-16

38

0.3

    

1

3,632

15.3

11

8-19

38

1.1

2.41

1.59-3.66

2.4

1.33-3.13

2

3,234

13.6

12

8-22

39

1.2

2.78

1.84-4.21

2.47

1.62-3.76

3

2,726

11.5

13

9-26

84

3.1

7.10

5.03-10.03

6.35

4.45-9.05

4

1,111

4.7

14

9-29

38

3.4

7.88

5.20-11.94

6.12

3.97-9.43

5

782

3.3

15

9-32

40

5.1

11.79

7.84-17.72

9.91

6.53-15.05

6

356

1.5

15

9-35

29

8.2

18.78

12.05-29.25

14.43

9.11-22.85

≥ 7

225

0.9

19

10-42

31

13.8

26.43

15.81-44.17

18.88

10.98-32.47

Per 1 unit increment

      

1.58

1.52-1.65

1.53

1.47-1.59

  1. Legend.
  2. Percentages are row percentages, that is, percent of deaths within levels of Charlson comorbidity indices; P10 and P90: 10th and 90th percentile; RR: relative risk; 95% CI: 95%% confidence interval; per 1 unit increment: estimated relative risk per 1 unit increase of the Charlson comorbidity index; IQR: interquartile range; adjustment for age (continuous).