Cross-Cultural Validation and Psychometric Evaluation of the Birth Beliefs Scale Among Portuguese Pregnant Women.

BACKGROUND

Beliefs about childbirth shape women's expectations, decisions, and experiences. Although several tools assess related constructs such as fear or self-efficacy, few instruments focus specifically on childbirth beliefs. The Birth Beliefs Scale (BBS) addresses this gap by measuring 2 dimensions: beliefs in childbirth as a natural event and as a medical event.

OBJECTIVE

We sought to adapt the BBS to the Portuguese context and evaluate its psychometric properties.

METHODS

This methodological study involved cross-cultural adaptation and psychometric testing. The adaptation followed internationally recognized guidelines, including translation, synthesis, back-translation, expert review, and pretesting. Psychometric evaluation included exploratory and confirmatory factor analysis. The sample comprised 241 pregnant women enrolled in childbirth preparation programs in central Portugal.

FINDINGS: The original two-factor structure was partially confirmed following the removal of 3 items with low psychometric performance, including 2 related to labor pain. The Portuguese version (BBS-pt) demonstrated acceptable internal consistency for the Natural subscale (α = 0.68) and lower consistency for the Medical subscale (α = 0.58), suggesting cultural and contextual nuances in how birth beliefs are expressed.

CONCLUSION

The BBS-pt is a promising instrument for assessing birth beliefs among Portuguese women. While further refinement is needed, particularly regarding pain-related items, the scale provides a valuable foundation for both research and clinical practice. It may assist nurse-midwives and other maternity care providers in tailoring antenatal education and intrapartum support to women's individual belief patterns, thereby contributing to more personalized and woman-centered care.