Immunisation is one of the most effective public health interventions, yet parental misconceptions and misinformation continue to challenge optimal vaccination coverage. A cross-sectional study was conducted in 2025 in two paediatric clinics of the Primorje-Gorski Kotar County Health Centre, Croatia. A total of 320 parents of preschool children participated (n=255; 79.7% mothers). Data were collected using an anonymous 26-item questionnaire. Descriptive and inferential statistical analyses (chi-square tests including χ², df, and effect sizes; correlations; t-tests; ANOVA) were performed. Most parents regularly vaccinated their children (n=275; 85.9%) and considered vaccination essential for preventing infectious diseases (n=225; 70.3%). Fear of side effects was the most common reason for hesitancy (n=189; 59.1%). Paediatricians were the most trusted source of information (n=286; 89.4%). Higher education and income were significantly associated with more positive attitudes (p<0.01). All chi-square analyses are presented with χ² values, degrees of freedom, p-values, and effect sizes. Parents generally demonstrate positive attitudes toward immunisation, yet safety concerns and misinformation remain. Strengthening communication strategies—particularly among families with lower educational levels—is essential for sustaining public trust and vaccination coverage.
Šarić et al. (Thu,) studied this question.