Table 3. Multivariable Modified Poisson Regression With Generalized Estimating Equations Assessing Factors Associated With SARS-CoV-2 Incident Infection by 6 Months, Based on 721 Intervals Among 415 Participants Without History of Infection at Baselinea.
| Characteristic | aRR (95% CI)b | P valuec |
|---|---|---|
| Age category at index | ||
| 30-49 y | 1 [Reference] | .13 |
| Younger: 16-29 y | 0.59 (0.31-1.14) | |
| Older: 50-69 y | 0.93 (0.62-1.38) | |
| Older: ≥70 y | 1.95 (0.94-4.06) | |
| Report after dominance of SARS-CoV-2 Omicron variants | ||
| No | 1 [Reference] | <.001 |
| Yes | 6.28 (3.94-10.0) | |
| Self-reported gender | ||
| Male | 1 [Reference] | .50 |
| Female | 0.79 (0.53-1.18) | |
| Other | 0.81 (0.12-5.54) | |
| Immigration history | ||
| Born in Canada | 1 [Reference] | .01 |
| Immigrated to Canada >10 y ago | 1.22 (0.81-1.83) | |
| Immigrated to Canada ≤10 y ago | 2.74 (1.64-4.58) | |
| Alcohol consumption in past interval | ||
| No | 1 [Reference] | .01 |
| Yes | 1.67 (1.12-2.48) | |
| Proportion of housing history spent in noncongregate shelter (every 10% increase) | 0.96 (0.89-1.03) | .21 |
Abbreviation: aRR, adjusted rate ratio.
a
Listwise deletion: 4 of 721 intervals were excluded due to missing covariate data.
b
aRR estimated using multivariable modified Poisson regression. Models were fitted with generalized estimating equations to account for the correlated nature of interval-level responses.
c
P values from likelihood ratio test.