Characteristics of users of a health center associated with COVID-19 vaccination status

Introduction: To achieve optimal vaccination coverage against COVID-19, it is necessary to identify and address its determinants. The aim of the study was to analyze the sociodemographic-clinical characteristics and the level of basic knowledge about the disease associated with COVID-19 vaccination status. Methods: A cross-sectional analytical observational study was conducted with 379 users of a health center. Sociodemographic-clinical variables and vaccination status were recorded on a card, and basic knowledge about COVID-19 was measured with the KNOW-PCOVID-19 Scale. The Chi-square test and a logistic regression model were used to estimate the odds ratio (OR) with 95% confidence interval (CI). Results: 83.38% of participants had had full doses of the COVID-19 vaccine; 15.30% had incomplete doses and 1.32% had received no doses. The characteristics associated with a higher possibility of incomplete vaccination were having the occupation of housewife (adjusted OR (aOR) 2.94; 95%CI:1.01- 9.61) and Christian religious affiliation (OR 3.38; 95%CI:0.51-7.43); while being an adult (aOR 0.39; 95%CI: 0.19-0.79) and older adult (aOR 0.13; 95%CI: 0.03-0.51), female sex (aOR 0.38; 95%CI: 0.15 - 0.95) and not being pregnant (aOR 0.21; 95%CI: 0.08-0.57) were associated with a lower propensity for incomplete vaccination. No association was found regarding basic knowledge about the disease. Conclusion: The percentage of users fully vaccinated against COVID-19 was high. Occupation, religion, age, sex, and non-pregnancy were characteristics associated with vaccination status. These variables should be considered in the planning and design of specific and relevant strategies to increase vaccination coverage.