Multivariate logistic regression model predicting coronavirus disease 2019 (COVID-19)-related outcomes
| Variables | Hospitalisation/death versus no COVID-19 diagnosis | Confirmed COVID-19 versus no COVID-19 diagnosis | Suspected COVID-19 versus no COVID-19 diagnosis | |||
| OR (95% CI) | p-value | OR (95% CI) | p-value | OR (95% CI) | p-value | |
| Subjects n | 63 | 1569 | 3543 | |||
| EMS versus firefighter | 4.23 (2.20–8.15) | <0.001 | 1.28 (1.10–1.49) | 0.001 | 1.07 (0.96–1.20) | 0.228 |
| FEV1 decline per 100 mL·year−1 | 1.70 (1.12–2.59) | 0.012 | 0.93 (0.81–1.06) | 0.265 | 1.01 (0.92–1.11) | 0.803 |
| Ever-smoker | 0.46 (0.25–0.86) | 0.014 | 0.99 (0.88–1.12) | 0.920 | 1.14 (1.04–1.24) | 0.005 |
| Age per 10 years | 1.59 (1.20–2.10) | 0.001 | 0.79 (0.74–0.84) | <0.001 | 0.68 (0.65–0.71) | <0.001 |
| Male sex | 1.55 (0.60–4.02) | 0.365 | 1.12 (0.88–1.44) | 0.355 | 1.07 (0.90–1.29) | 0.438 |
| Non-white race | 2.46 (1.34–4.51) | 0.004 | 1.21 (1.06–1.38) | 0.004 | 1.24 (1.13–1.37) | <0.001 |
| BMI | 1.09 (1.05–1.13) | <0.001 | 1.02 (1.00–1.03) | 0.029 | 1.00 (0.99–1.01) | 0.665 |
| Blood glucose mmol·L−1 | 1.13 (1.02–1.25) | 0.015 | 0.95 (0.89–1.01) | 0.093 | 1.01 (0.97–1.05) | 0.626 |
| HDL cholesterol mmol·L−1 | 0.38 (0.15–0.97) | 0.042 | 1.11 (0.94–1.30) | 0.222 | 0.95 (0.84–1.07) | 0.359 |
n=13 879 due to missing covariates. Model adjusted for first forced expiratory volume in 1 s (FEV1) measurement after hire date. Between 1 March 2020 and 31 May 2020. OR: odds ratio; EMS: emergency medical service providers; BMI: body mass index; HDL: high-density lipoprotein.