Development of a scale for attitude toward sexually transmitted infections based on the Health Belief Model

Determination of the attitudes of individuals toward sexually transmitted infections (STIs) can also help identify barriers to health service-seeking behavior. Hence, this study aimed to develop a scale for determining the attitudes of individuals toward sexually transmitted diseases.

This was a methodological study. The Health Belief Model (HBM) framework was used to elucidate the perceptions and interpretations of illnesses among individuals. After reviewing the relevant literature, an item pool was created to include 4 dimensions (perceived susceptibility (A), perceived severity (B), perceived benefit (C), and perceived barriers and self-efficacy (D)) about sexually transmitted diseases from the perspective of HBM. Exploratory factor analysis was conducted to evaluate the construct validity of the scale. Moreover, confirmatory factor analysis was used to examine the suitability of the items in terms of factor structures.

The final version of the scale comprised 19 items and 4 subdimensions. The first subdimension of the scale accounted for 20.11% of the total variance, whereas the second, third, and fourth subdimensions accounted for 17.83%, 12.50%, and 8.75% of the total variance, respectively. Collectively, these four subdimensions accounted for 59.19% of the total variance. The Cronbach's alpha reliability coefficient of the scale was found to be 0.74.

Briefly, the present study led to the development of a novel assessment tool, Attitude Toward Sexually Transmitted Infections Scale. Higher scores on the scale indicated higher likelihood of taking action for a possible STI treatment according to the HBM approach.