Factors associated with influenza vaccination, stratified by age groups
| Characteristics | Total | Age 19–39 y | Age 40–64 y | Age ≥65 y |
|---|---|---|---|---|
| Sex | ||||
| Male | 0.805 (0.691–0.938) |
0.915 (0.730–1.147) | 0.669 (0.523–0.857) |
0.533 (0.353–0.807) |
| Female | 1 | 1 | 1 | 1 |
| Education | ||||
| Elementary or lower | 1.342 (1.094–1.647) |
0.785 (0.227–2.720) | 1.532 (1.162–2.021) |
1.012 (0.632–1.623) |
| Middle | 1.155 (0.939–1.422) | 0.263 (0.115–0.603) |
1.385 (1.076–1.785) |
0.925 (0.548–1.561) |
| High | 0.878 (0.767–1.005) | 0.894 (0.712–1.125) | 0.890 (0.736–1.079) | 0.910 (0.580–1.429) |
| College and higher | 1 | 1 | 1 | 1 |
| Income | ||||
| Lowest | 0.851 (0.693–1.047) | 0.765 (0.463–1.265) | 0.727 (0.544–0.972) |
1.247 (0.819–1.900) |
| Medium-lowest | 0.881 (0.737–1.054) | 0.993 (0.736–1.341) | 0.763 (0.616–0.947) |
1.034 (0.693–1.545) |
| Medium-highest | 0.740 (0.361–0.869) |
0.709 (0.557–0.903) |
0.698 (0.561–0.870) |
1.244 (0.779–1.989) |
| Highest | 1 | 1 | 1 | 1 |
| Living area | ||||
| Urban | 1.013 (0.856–1.200) | 1.090 (0.788–1.511) | 0.987 (0.786–1.241) | 0.980 (0.724–1.627) |
| Rural | 1 | 1 | 1 | 1 |
| Marital status | ||||
| Married | 2.823 (2.281–3.495) |
3.361 (2.657–4.253) |
1.246 (0.807–1.926) | 4.965 (1.760–14.014) |
| Divorced/separated/widowed | 3.087 (2.311–4.125) |
3.519 (1.409–8.792) |
1.556 (0.955–2.536) | 3.824 (1.321–11.074) |
| Single | 1 | 1 | 1 | 1 |
| Smoking | ||||
| Current smoker | 0.727 (0.597–0.885) |
0.593 (0.431–0.816) |
0.987 (0.736–1.324) | 0.736 (0.472–1.148) |
| Ex-smoker | 1.011 (0.843–1.213) | 0.928 (0.654–1.316) | 1.277 (0.976–1.671) | 0.991 (0.674–1.457) |
| Non-smoker | 1 | 1 | 1 | 1 |
| Drinking | ||||
| Heavy drinker | 0.745 (0.596–0.932) |
0.928 (0.645–1.336) | 0.625 (0.472–0.829) |
0.941 (0.499–1.776) |
| Mild to moderate drinker | 0.975 (0.862–1.103) | 1.110 (0.892–1.382) | 0.876 (0.746–1.028) | 1.046 (0.805–1.359) |
| Non-drinker | 1 | 1 | 1 | 1 |
| Regular exercise | ||||
| Yes | 1.043 (0.932–1.168) | 1.065 (0.869–1.306) | 0.978 (0.841–1.137) | 1.391 (1.080–1.791) |
| No | 1 | 1 | 1 | 1 |
| Comorbidity | ||||
| Yes | 1.169 (1.105–1.347) |
0.926 (0.679–1.265) | 1.248 (1.032–1.510) |
1.372 (0.022–1.842) |
| No | 1 | 1 | 1 | 1 |
Values are presented as odds ratio (95% confidence interval).
Multiple logistic regression analysis adjusted for sex, education, income, living area, marital status, smoking, drinking, regular exercise, and comorbidity.
*P<0.05.