Cross-Cultural adaptation and validation of adolescent menstrual bleeding questionnaire in a Turkish sample.

Background: To evaluate the psychometric properties and cross-cultural validity of the Turkish version of the adolescent Menstrual Bleeding Questionnaire (aMBQ) through comprehensive reliability and validity analyses.

Methods: We conducted a two-phase methodological study involving translation/cross-cultural adaptation and psychometric validation using standardized guidelines. The validation phase included 181 adolescents aged 12-18 years. Tools included the Turkish aMBQ and Menstrual Practice Needs Scale (MPNS). Reliability was assessed through internal consistency (Cronbach's alpha), test-retest reliability (n = 30, two-week interval), and item analysis. For validity assessment, the sample was randomly split into two subsets for exploratory (n = 91) and confirmatory (n = 90) factor analyses, with convergent validity testing and known-groups comparison.

Results: Factor analysis revealed a three-dimensional structure explaining 68.4% of total variance: Bleeding Severity, Daily Activities Impact, and Social/School Impact (factor loadings: 0.685-0.845). The instrument demonstrated excellent internal consistency (Cronbach's α = 0.892) and test-retest reliability (ICC = 0.876, 95% CI: 0.841-0.912). Confirmatory factor analysis showed good model fit (CFI = 0.942, RMSEA = 0.048). The aMBQ correlated significantly with MPNS scores (r = 0.684, p < 0.001) and effectively discriminated between severity groups across all components (Cohen's d = 1.85-2.12). Content validity indices met acceptance criteria (I-CVI ≥ 0.78, S-CVI ≥ 0.90).

Conclusion: The Turkish aMBQ demonstrates robust psychometric properties and structural validity, supporting its use in clinical and research settings. The three-factor structure provides comprehensive assessment of menstrual bleeding impact among Turkish adolescents, enabling standardized evaluation of menstrual health in Turkish healthcare settings.