Table 4 Risk adjusted odds ratios, incident rate ratios, beta-coefficients and suggested weights

CCI

Updated CCI per Quan et al. (2011)

OR (95% CI)

Injury comorbidity index weight

IRR (95% CI)

Injury comorbidity index weight

0.43 (0.41–0.45)

0.41 (0.40–0.42)

0.48 (0.46–0.50)

0.45 (0.45–0.46)

0.63 (0.60–0.66)

0.57 (0.56–0.58)

Reference group

Reference group

1.16 (1.09–1.22)

1.26 (1.24–1.29)

1.11 (1.08–1.14)

1.12 (1.11–1.13)

4.92 (4.56–5.32)

1.83 (1.80–1.86)

–

–

–

–

6

4

1.38 (1.29–1.48)

1

1.17 (1.14–1.20)*

–

#

#

2.34 (2.01–2.72)

2

1.56 (1.49–1.64)

2

#

#

7.39 (4.52–12.08)

7

1.56 (1.40–1.73)

2

2

2

5.98 (1.84–19.37)

6

1.40 (1.20–1.63)

1

#

#

2.45 (2.15–2.80)

2

1.32 (1.28–1.36)

1

#

#

–

–

1.18 (1.08–1.29)*

–

1

0

6.29 (4.26–9.30)

6

1.46 (1.38–1.54)

1

1

1

3.74 (2.80–4.99)

4

1.43 (1.35–1.51)

1

#

#

7.06 (4.27–11.67)

7

1.27 (1.20–1.34)

1

1

2

8.70 (4.73–16.00)

9

1.62 (1.50–1.76)

2

#

#

2.00 (1.70–2.34)

2

–

–

1

2

3.25 (2.89–3.65)

3

1.93 (1.86–2.01)

2

#

#

1.42 (1.26–1.60)

1

1.27 (1.23–1.31)

1

2

1

1.20 (1.13–1.28)

1

1.12 (1.09–1.14)

–

1

0

5.03 (3.12–8.10)

5

1.62 (1.47–1.78)

2

2

2

–

–

–

–

#

#

2.49 (2.15–2.88)

2

1.25 (1.21–1.29)

1

#

#

21.25 (2.92–154.54)

21

1.72 (1.49–2.00)

2

#

#

–

–

1.32 (1.15–1.51)

1

6

6

1.63 (1.38–1.93)

2

1.27 (1.20–1.34)

1

1

2

20.78 (2.85–151.33)

21

1.83 (1.53–2.19)

2

3

4

–

–

–

–

1

0

4.41 (2.27–8.56)

4

2.10 (1.85–2.39)

2

#

#

–

–

1.55 (1.25–1.91)

2

1

0

3.11 (2.35–4.13)

3

1.88 (1.76–2.02)

2

1

0

5.54 (3.96–7.74)

6

3.14 (2.91–3.40)

3

#

#

–

–

1.81 (1.52–2.15)

2

#

#

1.58 (1.32–1.89)

2

1.17 (1.12–1.21)*

–

2

1

33.10 (4.59–238.47)

33

1.93 (1.67–2.24)

2

1

1

5.28 (2.30–12.13)

5

1.36 (1.22–1.52)

1

#

#

CCI

Updated CCI per Quan et al. (2011)

ECM point scores per van Walraven et al. (2009)

Beta coefficient (95% CI)

Injury comorbidity index weight¹

OR (95% CI)

Injury comorbidity index weight

OR (95% CI)

Injury comorbidity index weight

15–24 years

−0.25 (−0.28--0.23)

0.47 (0.44–0.50)

0.51 (0.47–0.55)

25–44 years

− 0.21 (− 0.23--0.19)

0.58 (0.55–0.61)

0.64 (0.60–0.68)

45–64 years

−0.16 (− 0.18--0.14)

0.70 (0.67–0.74)

0.69 (0.65–0.73)

65–84 years

Reference group

Reference group

Reference group

85+ years

0.02 (0.00–0.04)

1.01 (0.96–1.06)

1.18 (1.12–1.26)

Female sex

−0.03 (−0.04--0.01)

0.97 (0.94–1.01)

0.95 (0.91–0.99)

serious injury

0.89 (0.86–0.91)

–

1.07 (1.00–1.14)

HIV/AIDS

–

–

–

–

–

–

6

4

0

Alcohol dependence

0.20 (0.17–0.23)

1

1.23 (1.14–1.33)

1

1.35 (1.24–1.47)

1

#

#

0

Drug dependence

0.47 (0.41–0.52)

2

–

–

1.46 (1.23–1.72)

1

#

#

−7

Any malignancy

0.74 (0.65–0.83)

2

4.10 (3.45–4.86)

4

–

–

2

2

4

Blood loss anemia

0.61 (0.45–0.78)

2

–

–

–

–

#

#

−2

Cardiac arrhythmias

0.48 (0.44–0.52)

2

–

–

–

–

#

#

5

Cerebrovascular disease

–

–

–

–

–

–

1

0

##

Chronic pulmonary disease

0.57 (0.51–0.64)

2

1.45 (1.26–1.67)

1

1.63 (1.40–1.90)

2

1

1

3

Coagulopathy

0.49 (0.43–0.56)

2

1.48 (1.27–1.72)

1

1.60 (1.36–1.88)

2

#

#

3

Congestive heart failure

0.38 (0.31–0.45)

1

–

–

1.40 (1.19–1.65)

1

1

2

7

Deficiency anemias

0.66 (0.56–0.75)

2

–

–

–

–

#

#

−2

Dementia

0.16 (0.11–0.20)*

–

–

–

–

–

1

2

##

Depression

0.63 (0.59–0.67)

2

1.38 (1.24–1.53)

1

–

–

#

#

−3

Diabetes with chronic complications

0.26 (0.22–0.30)

1

1.26 (1.15–1.38)

1

1.33 (1.20–1.47)

1

2

1

0

Diabetes without complications

0.10 (0.07–0.12)*

–

1.18 (1.11–1.26)*

–

1.22 (1.14–1.31)

1

1

0

0

Hemiplegia/paraplegia

0.70 (0.60–0.79)

2

–

–

–

–

2

2

7

Hypertension complicated

0.48 (0.20–0.76)

2

–

–

–

–

#

#

0

Hypertension uncomplicated

0.42 (0.38–0.46)

2

–

–

–

–

#

#

0

Hypothyroidism

0.56 (0.39–0.74)

2

–

–

–

–

#

#

0

Metastatic solid tumor

–

–

–

–

2.42 (1.83–3.21)

2

6

6

12

Mild liver disease

0.32 (0.25–0.38)

1

1.74 (1.50–2.03)

2

1.89 (1.60–2.24)

2

1

2

11

Moderate or severe liver disease

0.81 (0.60–1.01)

2

–

–

–

–

3

4

11

Myocardial infarction

0.24 (0.10–0.38)

1

–

–

–

–

1

0

##

Obesity

0.80 (0.65–0.95)

2

–

–

–

–

#

#

−4

Peptic ulcer disease

0.65 (0.40–0.91)

2

–

–

–

–

1

0

0

Peripheral vascular disease

0.75 (0.66–0.83)

2

–

–

–

–

1

0

2

Psychoses

1.04 (0.95–1.13)

3

1.69 (1.36–2.08)

2

1.57 (1.23–2.00)

2

#

#

0

Pulmonary circulation disorders

0.79 (0.58–0.99)

2

–

–

–

–

#

#

4

Renal disease including renal failure

0.19 (0.14–0.24)

1

2.02 (1.83–2.21)

2

1.67 (1.50–1.86)

2

2

1

5

Rheumatic disease including some other connective tissue disorders

0.83 (0.66–1.01)

2

–

–

–

–

1

1

0

Valvular disease

0.41 (0.28–0.55)

2

–

–

–

–

#

#

−1