Predictors of positivity to SARS-CoV-2 antibodies (n=437*)
| Variables | Simple logistic regression analysis COR (95% CI) | P | Multiple logistic regression analysis AOR (95% CI) | P |
| Age (years) | ||||
| <18 | 0.4 (0.1 to 1.0) | 0.0853 | 0.4 (0.0 to 5.0) | 0.5574 |
| 18–30 | 1 | 1 | ||
| 31–50 | 1.3 (0.7 to 2.5) | 1.2 (0.6 to 2.3) | ||
| >50 | 0.8 (0.4 to 1.7) | 0.7 (0.3 to 1.6) | ||
| Employment status | ||||
| Unemployed | 1 | 0.0320 | 1 | 0.1739 |
| Self-employed | 0.8 (0.4 to 1.5) | 0.9 (0.4 to 1.7) | ||
| Casual/part time | 3.3 (1.2 to 8.8) | 3.2 (1.2 to 8.7) | ||
| Student | 0.8 (0.4 to 1.5) | 0.8 (0.3 to 2.1) | ||
| Formal/regular | 1.8 (0.5 to 6.5) | 1.8 (0.5 to 6.6) | ||
| Not applicable (<16 years) | 0.8 (0.3 to 1.9) | 1.2 (0.1 to 19.9) | ||
| COVID-19 symptoms (previous 16 months) | ||||
| No | 1 | 0.0121 | 1 | 0.0085 |
| Yes | 0.5 (0.3 to 0.8) | 0.4 (0.2 to 0.8) | ||
| COVID-19 vaccination | ||||
| No | 0.2 (0.0 to 1.3) | 0.0893 | 0.2 (0.0 to 1.3) | 0.0822 |
| Yes | 1 | 1 | ||
*The one participant with undisclosed employment status was omitted.
AOR, adjusted OR; COR, crude OR.