J Korean Acad Psychiatr Ment Health Nurs.  2023 Dec;32(4):434-449. 10.12934/jkpmhn.2023.32.4.434.

Validity and Reliability of the Korean Version of the Postpartum Bonding Questionnaire (K-PBQ)

• Han HM
• Kim SS

• KMID: 2550355
• DOI: http://doi.org/10.12934/jkpmhn.2023.32.4.434

Abstract

Purpose
We evaluated the validity and reliability of the Korean version of the Postpartum Bonding Questionnaire (K-PBQ) among Korean parents with children under 12 months of age.
Methods
The K-PBQ was translated considering Korean cultural validity through translation, back-translation, and expert panel review. Construct validity was tested by conducting both exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) with data from 308 couples (N=616). Convergent and discriminant validity were performed using correlations between the K-PBQ and instruments measuring the concepts of attachment, postnatal depression, and dyadic adjustment. The reliability of the K-PBQ was calculated using Cronbach’s ⍺ coefficients.
Results
EFA revealed that the 25-item K-PBQ was composed of two factors: impaired bonding (17 items) and the burden of infant care (8 items). The results of the final model fit were acceptable. Known-group validity showed that the K-PBQ score of the postnatal depressed group was significantly higher than that of the non-depressed group. The Cronbach’s ⍺ of the K-PBQ was .95.
Conclusion
The K-PBQ was verified as a valid and reliable scale to measure postpartum bonding among parents with children under 12 months of age in Korea. It may contribute to facilitating further research on parent-infant bonding.

Keyword

Postpartum period; Object attachment; Reliability and validity; Validation study; 산후기간; 대상 애착; 신뢰도와 타당도; 타당화 연구