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