Table 2 Modelling of emergency responder claims for injury/diseases that arose during periods of extreme bushfires vs. all other claims.

From: First responders’ occupational injury and disease associated with periods of extreme bushfires

 

Univariate

Multivariable:

Sociodemographic factors

Occupation

Injury/disease

Claim type

Multivariable:

Sociodemographic factors

Occupation

Cause/mechanism

Claim type

 

OR

[95% CI]

OR

[95% CI]

OR

[95% CI]

Worker factors

Age at injury

< 25 yrs

1.28

[0.94,

1.73]

1.14

[0.83,

1.56]

1.17

[0.86,

1.61]

25–34 yrs

1.13

[0.95,

1.33]

1.12

[0.94,

1.33]

1.13

[0.95,

1.35]

35–44 yrs

1[REF]

  

1 [REF]

  

1[REF]

  

45–54 yrs

1.11

[0.94 ,

1.30]

1.10

[0.93,

1.29]

1.09

[0.92,

1.29]

≥ 55 yrs

1.60

[1.32,

1.92]*

1.58

[1.30,

1.93]*

1.58

[1.30,

1.92]*

Sex

Male

1[REF]

  

1 [REF]

  

1[REF]

  

Female

1.00

[0.87,

1.14]

1.09

[0.94,

1.27]

1.08

[0.93,

1.26]

Regionality

Major Cities

1[REF]

  

1 [REF]

  

1[REF]

  

Inner Regional

1.17

[1.03,

1.34]*

1.14

[0.98,

1.32]

1.14

[0.99,

1.33]

Outer Regional/Remote

1.18

[0.93,

1.49]

1.03

[0.79,

1.34]

1.03

[0.79,

1.35]

Socio-economic Index for Area

Quintile 1

1.13

[0.89,

1.42]

0.94

[0.73,

1.21]

0.94

[0.72,

1.21]

Quintile 2

1.14

[0.93,

1.39]

1.00

[0.80,

1.25]

1.00

[0.80,

1.25]

Quintile 3

1.03

[0.87,

1.23]

0.94

[0.79,

1.14]

0.95

[0.79,

1.14]

Quintile 4

1.18

[1.00,

1.38]

1.15

[0.98,

1.36]

1.14

[0.97,

1.34]

Quintile 5

1[REF]

  

1 [REF]

  

1[REF]

  

Work factors

Occupation

Ambulance officers and paramedics

0.93

[0.81,

1.08]

0.91

[0.78,

1.07]

0.92

[0.78,

1.08]

Police officers

1[REF]

  

1 [REF]

  

1[REF]

  

Firefighters

1.25

[1.08,

1.45]*

1.19

[1.01,

1.40]*

1.19

[1.02,

1.40]*

Injury/disease factors

Reported season of onset

Summer

8.97

[7.81,

10.29]*

8.94

[7.79,

10.26]*

8.92

[7.77,

10.24]*

Autumn, winter, spring

1[REF]

  

1 [REF]

  

1[REF]

  

Cause^

Falls, slips and trips

1[REF]

     

1[REF]

  

Hitting object

0.98

[0.67,

1.43]

   

1.04

[0.71,

1.53]

Being hit by moving object

0.98

[0.76,

1.26]

   

1.00

[0.77,

1.30]

Sound and pressure

0.82

[0.45,

1.49]

   

0.68

[0.36,

1.28]

Body stressing

1.04

[0.86,

1.26]

   

1.15

[0.95,

1.40]

Heat, radiation and electricity

3.17

[2.07,

4.86]*

   

1.95

[1.26,

3.03]*

Chemicals and substances

1.16

[0.78,

1.73]

   

1.05

[0.70,

1.58]

Biological

0.60

[0.36,

0.99]

   

0.72

[0.43,

1.21]

Mental

1.66

[1.35,

2.04]*

   

1.65

[1.32,

2.05]*

Other

0.85

[0.62,

1.18]

   

0.79

[0.57,

1.10]

Injury/disease type^

Intracranial Injuries

2.87

[1.63,

5.06]*

3.04

[1.69,

5.48]*

   

Fractures

1.13

[0.77,

1.66]

1.17

[0.79,

1.73]

   

Wounds

1[REF]

  

1 [REF]

     

Burns

1.62

[0.72,

3.63]

1.33

[0.58,

3.03]

   

Other injuries

1.24

[0.87,

1.75]

1.15

[0.81,

1.63]

   

Traumatic joint, ligament, muscle tendon

0.95

[0.74,

1.21]

1.04

[0.81,

1.33]

   

Musculoskeletal system

1.01

[0.81,

1.25

1.09

[0.87,

1.37]

   

Mental disorders

1.62

[1.29,

2.04]*

1.61

[1.25,

2.07]*

   

Digestive system

1.58

[0.91,

2.77]

1.60

[0.89,

2.85]

   

Skin and subcutaneous tissue

0.85

[0.29,

2.51]

0.76

[0.26,

2.27]

   

Nervous or sensory organs

1.09

[0.67,

1.75]

0.97

[0.59,

1.60]

   

Respiratory system

1.83

[0.89,

3.73]

1.97

[0.94,

4.11]

   

Circulatory system

0.75

[0.21,

2.66]

0.68

[0.19,

2.45]

   

Infections and parasites

2.65

[1.42,

4.96]*

3.11

[1.61,

5.98]*

   

Neoplasm Cancer

1.69

[0.91,

3.15]

1.12

[0.58,

2.16]

   

Other diseases

0.92

[0.35,

2.38]

0.80

[0.30,

2.09]

   

Other claims/missing

0.22

[0.09,

0.57]*

0.25

[0.10,

0.63]*

   

Claim factors

Medical only claims

0.83

[0.72,

0.95]*

0.86

[0.74,

1.01]

0.88

[0.76,

1.03]

Claim type

Minor claim

0.80

[0.70,

0.91]*

0.94

[0.81,

1.09]

0.91

[0.78,

1.05]

Standard claim

1[REF]

  

1 [REF]

  

1[REF]

  
  1. ^Cause and injury/disease type are entered into separate models to prevent multicollinearity, OR; Odds ratio, 95% CI; 95% confidence interval, *; p < 0.05 or p < 0.0001 (Statistically significant).