Based on the review, we decided on additional improvements and corrections to the Slovenian version. Socio-demographic questions were added to the translated questionnaire. The questionnaire was first pilot tested on a random sample of 10 people. Based on the results, we further improved the questionnaire. The final version was then sent to a sample of 2,500 randomly selected adult residents of the Republic of Slovenia. The addresses of the respondents were collected with the help of the Statistical Office of the Republic of Slovenia. The responses were completely anonymous. Respondents answered the questions with the options very difficult, difficult, easy, very easy and I don't know. After a month and a half, we received 508 returned questionnaires, i.e. 20.3 percent of answers. The results were entered in a spreadsheet, which was then transferred to the SPSS program, with the help of which we performed our analyzes. Sociodemographic data were first processed with descriptive statistics. The reliability of the instrument was then checked with a Cronbach’s alpha between the 1-, 3-, 4-, and 12-factor models. We found that the most reliable 1-factor model is where the Cronbach’s alpha value is 0.950. We then checked the validity of the questionnaire by confirmatory factor analysis and multiple linear regression analysis. According to the coefficients of the confirmatory factor analysis, the 12-factor model gives us the most valid results. Using multiple linear regression analysis, we checked the relationship between the independent variables and the dependent variable with the health literacy index. Only the association between health self-assessment and health literacy was statistically significant, the higher the health self-assessment, the higher the health literacy.
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