Table 2. Multilevel logistic regression analysis of factors associated with receipt of one dose of COVID-19 vaccine in Alberta, Canadaa.
| Characteristics | Model 2 | Model 3 | Model 4 | Model 5 |
|---|---|---|---|---|
| AOR (95% CI) | AOR (95% CI) | AOR (95% CI) | AOR (95% CI) | |
| Age categories | ||||
| 12–17 years | Ref | Ref | Ref | Ref |
| 18–29 years | 1.00 (0.99–1.01) | 1.01 (1.0–1.02) | 1.00(0.94–1.06) | 1.01 (0.89–1.14) |
| 30–49 years | 1.05 (1.04–1.05) | 1.05 (1.04(1.06) | 1.03 (0.97–1.09) | 1.04 (0.92–1.18) |
| 50–64 years | 1.78 (1.77–1.79) | 1.79 (1.78–1.81) | 1.78 (1.67–1.88) | 1.77 (1.56–2.01) |
| 65 to 74 years | 2.68 (2.65–2.71) | 2.71 (2.68–2.74) | 2.59 (2.44–2.75) | 2.66 (2.35–3.02) |
| 75 years and above | 2.82 (2.79–2.86) | 2.89 (2.86–2.93) | 2.81(2.64–2.99) | 2.88 (2.54–3.26) |
| Sex | ||||
| Male | Ref | Ref | Ref | Ref |
| Female | 1.21 (1.21–1.22) | 1.21 (1.21–1.22) | 1.21 (1.20–1.23) | 1.21 (1.20–1.23) |
| Income Quintile | ||||
| Q1 (Lowest income) | N/A | Ref | Ref | Ref |
| Q2 | N/A | 1.14 (1.13–1.15) | 1.12 (1.07–1.17) | 1.22 (1.11–1.33) |
| Q3 | N/A | 1.28 (1.27–1.29) | 1.26 (1.21–1.32) | 1.37 (1.25–1.49) |
| Q4 | N/A | 1.42 (1.41–1.44) | 1.40 (1.34–1.46) | 1.50 (1.37–1.64) |
| Q5 (Highest income) | N/A | 1.67 (1.65–1.68) | 1.62 (1.55–1.70) | 1.76 (1.60–1.93) |
| Geographic health zone | ||||
| Central zone | N/A | Ref | Ref | Ref |
| South zone | N/A | 0.93 (0.90–0.96) | 0.90 (0.86–0.94) | 1.17 (1.12–1.22) |
| Calgary zone | N/A | 1.19 (1.16–1.23) | 1.23 (1.19–1.27) | 1.26 (1.21–1.31) |
| Edmonton zone | N/A | 1.03 (0.98–1.08) | 1.04 (0.98–1.10) | 1.11 (1.05–1.18) |
| North zone | N/A | 1.17 (1.12–1.23) | 1.02 (0.96–1.07) | 0.82 (0.77–0.86) |
| Place of residence | ||||
| Rural | N/A | Ref | Ref | Ref |
| Metro | N/A | 1.28 (1.24–1.33) | 1.25 (1.20–1.30) | 1.37 (1.31–1.42) |
| Urban | N/A | 1.01 (0.98–1.03) | 1.00 (0.98–1.03) | 1.11 (1.08–1.14) |
| Neighborhood COVID-19 risk level | ||||
| R5 (Lowest risk) | N/A | N/A | N/A | Ref |
| R1 (Highest risk) | N/A | N/A | N/A | 1.52 (1.12–2.05) |
| R2 (Higher risk) | N/A | N/A | N/A | 1.14 (0.93–1.39) |
| R3 (Medium risk) | N/A | N/A | N/A | 1.15 (0.96–1.38) |
| R4 (Lower risk) | N/A | N/A | N/A | 1.12 (0.96–1.32) |
a Notes
Model 1-Empty unconditional model with no exposure variables, not shown in the table
Model 2. Variables defining individual-level characteristics of the individuals (age categories and sex) added into the Model 1.
Model 3. Place-based variables defined at the postal code level (urban/rural place of residence, geographic health zone, neighborhood income quintile) were added into the Model 2.
Model 4. Variables showing significant association in the fixed effects in model 3 were included in the random statements into the Model 3.
Model 5 (final model): Place-based variable defined at the FSA level (Neighborhood COVID-19 risk level) was added to the Model 4.