Table 5.
Summary model of factors associated with completion of primary COVID-19 vaccination series among older adults in Hong Kong (n = 440).
| AOR (95% CI) | p-Value | Cohen’s d | |
|---|---|---|---|
| Age group, years | |||
| 65–69 | 1.0 | ||
| 70–74 | 2.01 (1.06–3.83) | 0.03 | 0.39 |
| ≥75 | 0.75 (0.35–1.58) | 0.45 | −0.16 |
| Education level | |||
| Primary or below | 1.0 | ||
| Secondary | 0.92 (0.53–1.59) | 0.76 | −0.05 |
| Tertiary or above | 1.67 (0.58–4.82) | 0.34 | 0.28 |
| Current employment status | |||
| Unemployed/retired/housewife | 1.0 | ||
| Full-time/part-time | 3.01 (1.28–7.10) | 0.01 | 0.61 |
| Receiving Comprehensive Social Security Assistance (CSSA) | |||
| No | 1.0 | ||
| Yes | 0.30 (0.10–0.95) | 0.01 | −0.66 |
| History of pneumococcal vaccination | |||
| No | 1.0 | ||
| Yes | 2.07 (1.06–4.02) | 0.03 | 0.40 |
| Perceived impacts of incentives provided by the government on increasing one’s motivation to receive COVID-19 vaccination | |||
| Lottery for winning prizes | 1.01 (0.66–1.26) | 0.95 | 0.01 |
| Visiting mainland China or other places without quarantine | 1.96 (1.30–2.95) | 0.01 | 0.37 |
| Allowing visits to elderly homes and hospitals without COVID-19 testing | 0.93 (0.69–1.26) | 0.64 | −0.04 |
| Entering bars or clubs | 1.17 (0.61–2.25) | 0.64 | 0.09 |
| Walk-in vaccination services for older adults without prior booking | 1.03 (0.75–1.41) | 0.86 | 0.02 |
| Satisfaction with COVID-19 vaccination health promotional materials (e.g., advertisements, posters, and others) produced by the government | |||
| Whether the materials can address your concerns related to COVID-19 vaccination | |||
| No/uncertain | 1.0 | ||
| Yes | 1.06 (0.44–2.52) | 0.90 | 0.03 |
| Whether the materials are helpful for you in making a decision on whether to receive a COVID-19 vaccine | |||
| No/uncertain | 1.0 | ||
| Yes | 1.83 (0.79–4.25) | 0.16 | 0.33 |
| Perceptions related to COVID-19 vaccination | |||
| Attitude Scale | 0.68 (0.60–0.77) | <0.001 | −0.21 |
| Subjective Norm Scale | 0.71 (0.55–0.90) | 0.01 | −0.19 |
| Perceived behavioral control to take up COVID-19 vaccination | 5.07 (1.50–17.16) | 0.01 | 0.90 |
| Decisional Conflict Scale | 1.98 (1.53–2.57) | <0.001 | 0.38 |
AOR—adjusted odds ratios; odds ratios were obtained by fitting a multivariate logistic regression model considering all variables with p < 0.05 in univariate analysis.