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Table 2 Multivariate-adjusted odds ratios and 95% Confidence Intervals for application of surgery

From: An analysis of equity in treatment of hip fractures for older patients with dementia in acute care hospitals: observational study using nationwide hospital claims data in Japan

N = 214,601

model 1 (age, sex)

model 2 (Dementia level only)

model 3 (with clinical factors)

model 4 (with hospital factors)

 

OR

95% C.I.

P value

OR

95% C.I.

P value

OR

95% C.I.

P value

OR

95% C.I.

P value

Compositional factor

 Sex

  Male (reference)

                

  Female

1.15

1.12

1.19

< 0.001

    

1.16

1.12

1.19

< 0.001

1.16

1.12

1.19

< 0.001

 Age Group

  65–79 (ref.)

                

  80–89

0.87

0.84

0.89

< 0.001

    

0.87

0.84

0.90

< 0.001

0.87

0.84

0.90

< 0.001

  Over 90

0.67

0.64

0.69

< 0.001

    

0.67

0.65

0.70

< 0.001

0.67

0.65

0.70

< 0.001

 Dementia Levela

  No dementia (ref.)

                

  Dementia level 1

    

0.94

0.91

0.97

< 0.001

1.03

1.00

1.06

0.08

1.03

1.00

1.06

0.06

  Dementia level 2

    

1.06

1.02

1.09

< 0.001

1.20

1.16

1.25

< 0.001

1.21

1.16

1.25

< 0.001

 Fx. Type

  Femoral neck (ref.)

                

  Trochanteric

        

0.79

0.77

0.81

< 0.001

0.79

0.77

0.81

< 0.001

  Subtrochanteric

        

0.42

0.38

0.46

< 0.001

0.42

0.38

0.46

< 0.001

 Charlson Index

  0 (ref.)

                

  1

        

1.18

1.15

1.22

< 0.001

1.18

1.15

1.22

< 0.001

   ≥ 2

        

1.00

0.97

1.03

0.96

1.00

0.97

1.03

0.93

 Coma Levelb

  Alert (ref.)

                

  Level 1

        

0.94

0.91

0.98

0.01

0.94

0.90

0.98

0.00

  Level 2

        

0.67

0.56

0.80

< 0.001

0.67

0.56

0.80

< 0.001

  Level 3

        

0.55

0.31

1.00

0.05

0.56

0.31

1.01

0.05

 Ambulance Use

  No ambulance use (ref.)

                

  Ambulance use

        

1.37

1.33

1.40

< 0.001

1.36

1.33

1.40

< 0.001

Contextual factor

 City levelc

  Designated city (ref.)

                

  Pop. ≥150,000

            

1.04

0.82

1.32

0.76

  Pop. 80,000≤, ≤150,000

           

1.24

0.92

1.67

0.16

  Pop. ≤80,000

            

0.97

0.74

1.26

0.80

 Hosp. functiond

  Under 200 beds hosp.(ref.)

               

  Over 200 beds hosp.

            

8.36

6.73

10.40

< 0.001

  Regional support hosp.

            

15.07

11.13

20.42

< 0.001

  University & advanced hosp.

           

10.90

7.05

16.83

< 0.001

Macro-level variance (S.E.)

 between hospitals (n = 1328)

4.18

(0.20)

  

4.20

(0.20)

  

4.04

(0.19)

  

2.83

(0.13)

  
  1. aDementia level 1 and 2: represents “degree of independence in daily life for elderly people with dementia” criteria I-II and III-IV/M, respectively. bComa level refers to the Japan Coma Scale (JCS) which has four decisive levels of consciousness. cDesignated city has population over 500,000 and is designated by order of the Cabinet of Japan under Local Autonomy Law. dAdvanced hospitals include 6 national centers for cancer, circulation and global health. Regional support hospital has over 200 beds and meets requirements such as referral rate over 80% for outpatients
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BMC Health Services Research

ISSN: 1472-6963

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