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Table 4 Capture-recapture models estimating missing crashes

From: Completeness and accuracy of crash outcome data in a cohort of cyclists: a validation study

Model

Variables included

Estimate

SE

AIC

AIC weight

Weighted estimate

Unconditional SE

All crashes

      

1

ACC NMDS CAS

5.23

0.22

84.87

0.00000003

0.00000014

0.00000001

2

ACC NMDS CAS ACC*NMDS

5.75

0.37

84.48

0.00000003

0.00000019

0.00000001

3

ACC NMDS CAS ACC*CAS

5.06

0.27

85.32

0.00000002

0.00000011

0.00000001

4

ACC NMDS CAS NMDS*CAS

5.33

0.22

54.87

0.09009773

0.48066236

0.03346642

5

ACC NMDS CAS ACC*NMDS NMDS*CAS

6.32

0.41

50.37

0.85614943

5.40872405

0.07995839

6

ACC NMDS CAS ACC*CAS NMDS*CAS

5.19

0.27

55.90

0.05375276

0.27913806

0.02753761

Model-averaged estimate

    

6.17

 

Unconditional SE

     

0.14

On-road crashes

      

1

ACC NMDS CAS

4.61

0.24

75.99

0.0000010926

0.0000050416

0.0000005142

2

ACC NMDS CAS ACC*NMDS

5.15

0.37

75.19

0.0000016262

0.0000083754

0.0000002457

3

ACC NMDS CAS ACC*CAS

4.38

0.32

76.40

0.0000008888

0.0000038942

0.0000006566

4

ACC NMDS CAS NMDS*CAS

4.74

0.25

53.42

0.0870396250

0.4128898692

0.0311739533

5

ACC NMDS CAS ACC*NMDS NMDS*CAS

5.69

0.41

48.83

0.8633010530

4.9139959238

0.0796703971

6

ACC NMDS CAS ACC*CAS NMDS*CAS

4.56

0.33

54.54

0.0496557143

0.2264598505

0.0271116407

Model-averaged estimate

    

5.55

 

Unconditional SE

     

0.14

Collisions with a motor vehicle

      

1

ACC NMDS CAS

2.45

0.36

60.47

0.0002105079

0.000514923

0.0000677993

2

ACC NMDS CAS ACC*NMDS

2.75

0.43

61.24

0.0001433835

0.000393918

0.0000255905

3

ACC NMDS CAS ACC*CAS

2.40

0.62

62.46

0.0000777519

0.000186721

0.0000374729

4

ACC NMDS CAS NMDS*CAS

2.78

0.37

45.81

0.3216029517

0.895471259

0.0453152851

5

ACC NMDS CAS ACC*NMDS NMDS*CAS

3.33

0.47

44.94

0.4970883194

1.656397698

0.0609100608

6

ACC NMDS CAS ACC*CAS NMDS*CAS

3.37

0.70

46.96

0.1808770856

0.609953708

0.0483519920

Model-averaged estimate

    

3.18

 

Unconditional SE

     

0.15

  1. SE, Standard Error.