Table A4.
Determinants of vaccination status among older adults: an analysis of using a comorbidity measure counting the number of major conditions
| Dependent variable in logistic regression | Vaccination (at least one dose) vs. the unvaccinated | Primary series recipients vs. others | Booster recipients vs. others | |||
|---|---|---|---|---|---|---|
| (n/mean of dep. variable) | n=12900 | mean=.939 | n=12900 | mean=.913 | n=12900 | mean=.773 |
| OR (95% CI) | p value | OR (95% CI) | p value | OR (95% CI) | p value | |
| Female | 0.82 (0.70–0.97) | 0.019 | 0.81 (0.71–0.93) | 0.002 | 0.93 (0.85–1.01) | 0.068 |
| Married | 1.52 (1.26–1.83) | 0.000 | 1.40 (1.19–1.65) | 0.000 | 1.20 (1.06–1.35) | 0.003 |
| Ethnic minorities | 0.91 (0.64–1.28) | 0.571 | 0.68 (0.52–0.88) | 0.003 | 0.64 (0.54–0.77) | 0.000 |
| Urban Hukou | 0.62 (0.51–0.76) | 0.000 | 0.73 (0.61–0.87) | 0.000 | 0.98 (0.87–1.12) | 0.787 |
| Age group (ref. 52–59) | ||||||
| Age 60–69 | 1.00 (0.79–1.27) | 0.972 | 0.89 (0.73–1.09) | 0.278 | 0.85 (0.75–0.97) | 0.015 |
| Age 70–79 | 0.78 (0.61–1.00) | 0.051 | 0.64 (0.52–0.80) | 0.000 | 0.64 (0.55–0.73) | 0.000 |
| Age 80+ | 0.36 (0.27–0.48) | 0.000 | 0.27 (0.21–0.34) | 0.000 | 0.27 (0.22–0.32) | 0.000 |
| Education (ref. illiterate) | ||||||
| Primary school (literate) | 1.03 (0.85–1.25) | 0.786 | 0.91 (0.77–1.07) | 0.244 | 1.01 (0.91–1.13) | 0.823 |
| Middle and high school + | 1.16 (0.91–1.48) | 0.231 | 1.15 (0.94–1.42) | 0.179 | 1.11 (0.97–1.27) | 0.126 |
| Region (ref. East) | ||||||
| Central | 1.08 (0.89–1.32) | 0.434 | 1.29 (1.08–1.54) | 0.004 | 1.15 (1.02–1.30) | 0.026 |
| West | 1.52 (1.23–1.87) | 0.000 | 1.40 (1.17–1.67) | 0.000 | 1.30 (1.14–1.47) | 0.000 |
| Northeast | 1.38 (0.99–1.91) | 0.057 | 1.22 (0.92–1.62) | 0.170 | 0.91 (0.74–1.10) | 0.327 |
| Functionally dependent | 0.29 (0.24–0.34) | 0.000 | 0.31 (0.26–0.36) | 0.000 | 0.44 (0.39–0.50) | 0.000 |
| Chronic conditions | ||||||
| Comorbidity | 0.82 (0.79–0.86) | 0.000 | 0.85 (0.81–0.89) | 0.000 | 0.92 (0.89–0.94) | 0.000 |
| Arthritis/rheumatism | 1.46 (1.23–1.73) | 0.000 | 1.39 (1.20–1.61) | 0.000 | 1.17 (1.06–1.28) | 0.002 |
| Digestive disease | 1.13 (0.95–1.34) | 0.184 | 1.22 (1.05–1.42) | 0.011 | 1.22 (1.10–1.35) | 0.000 |
| Constant | 22.90 (16.20–32.39) | 0.000 | 17.53 (12.98–23.67) | 0.000 | 4.58 (3.73–5.61) | 0.000 |
Note: Other specifications are same as in Table 2. Standard errors are clustered at the household level. OR stands for odds ratio. The variable “Comorbidity” counts the number of the ten major conditions, including hypertension, heart diseases, stroke, diabetes, lung diseases, cancer, dyslipidaemia, liver diseases, kidney diseases, and asthma.