The development and the psychometric evaluation of the Adolescents Intentions towards the Birth Options Scale in Greek

INTRODUCTION: Worldwide, the rising of caesarean section rates is a major public health issue. Little is known regarding birth attitudes held by students who are the next generation of parents. The aim of this study was to develop and assess the psychometric properties of the Adolescents Intentions towards Birth Options Scale (AIBOS), a self-report and short instrument assessing intentions towards birth options in young adolescents. METHODS: The AIBOS was framed by Ajzen’s theory of planned behavior and developed in a three-phase process using an integrated mixed-methods approach that included literature reviews, professional focus groups, and a psychometric survey evaluation. The psychometric evaluation was conducted by recruiting a sample of 480 high school students. Content validity, exploratory factor analysis, discriminant and construct validity, test-retest reliability and internal consistency were explored. RESULTS: The expert panel determined that the content validity was satisfactory. The final 17-item scale consisted of five factors explaining 48.9% of the total variance in the data. Discriminant validity was satisfactory. Cronbach’s α coefficient was over 0.7 for each factor, indicating acceptable internal consistency of the questionnaire. There was significant agreement in all subscales as emerged from test-retest. CONCLUSIONS: The AIBOS demonstrated good content validity, an easily interpretable five-factor structure, acceptable internal consistency, high test-retest reliability, and satisfactory discriminant and construct validity with sample characteristics. It is an easily comprehensible, easily completed tool, which matches the culture of young adolescents.