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Table 3 Primary and secondary outcomes by year

From: Nationwide improvements in geriatric mortality due to traumatic brain injury in Japan

 

Total

2004–2006

2007–2009

2010–2012

2013–2015

2016–2018

 

Isolated TB

N = 28,015

N = 657

N = 2668

N = 5878

N = 9572

N = 9240

 

Death at hospital discharge

4588 (16.38%)

194 (29.5%)

560 (21.0%)

1058 (18.0%)

1467 (15.3%)

1309 (14.2%)

 
       

OR for 3–year increment

Crude OR

 

reference

0.63

0.52

0.43

0.39

0.83

95% CI

  

(0.52–0.77)

(0.44–0.63)

(0.36–0.52)

0.33–0.47)

(0.81–0.86)

Adjusted OR*

 

reference

0.63

0.57

0.45

0.42

0.84

95% CI

  

(0.49–0.81)

(0.45–0.72)

(0.35–0.57)

(0.33–0.53)

(0.81–0.88)

Death at emergency department

196 (0.70%)

7 (1.1%)

23 (0.9%)

50 (0.9%)

56 (0.6%)

60 (0.6%)

 
       

OR for 3–year increment

Crude OR

 

reference

0.81

0.80

0.55

0.61

0.88

95% CI

  

(0.34–1.89)

(0.36–1.76)

(0.25–1.20)

(0.28–1.33)

(0.77–1.00)

Adjusted OR**

 

reference

0.94

1.18

0.80

0.99

0.97

95% CI

  

(0.39–2.26)

(0.52–2.69)

(0.35–1.82)

(0.44–2.24)

(0.85–1.10)

 

Total

2004–2006

2007–2009

2010–2012

2013–2015

2016–2018

 

Multiple trauma

N = 9978

N = 248

N = 1050

N = 2152

N = 3356

N = 3172

 

Death at hospital discharge

2668 (26.7%)

119 (48.0%)

352 (33.5%)

686 (31.9%)

822 (24.5%)

689 (21.7%)

 
       

OR for 3–year increment

Crude OR

 

reference

0.55

0.51

0.35

0.3

0.78

95% CI

  

(0.41–0.72)

(0.39–0.66)

(0.27–0.46)

(0.23–0.39)

(0.75–0.81)

Adjusted OR*

 

reference

0.56

0.57

0.37

0.32

0.78

95% CI

  

(0.40–0.80)

(0.41–0.79)

(0.27–0.51)

(0.23–0.45)

(0.75–0.83)

Death at emergency department

395 (3.96%)

18 (7.3%)

54 (5.1%)

105 (4.9%)

120 (3.6%)

98 (3.1%)

 
       

OR for 3–year increment

Crude OR

 

reference

0.69

0.66

0.47

0.41

0.81

95% CI

  

(0.40–1.20)

(0.39–1.10)

(0.28–0.79)

(0.24–0.69)

(0.74–0.89)

Adjusted OR**

 

reference

0.80

0.83

0.66

0.65

0.90

95% CI

  

(0.44–1.45)

(0.47–1.45)

(0.38–1.15)

(0.37–1.15)

(0.82–1.00)

  1. OR Odds ratio, CI Confidence Interval