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Yoshiko Suetsugu Last modified date:2022.06.24

Lecturer / Developmental and Community Health Nursing
Department of Health Sciences
Faculty of Medical Sciences

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 Reseacher Profiling Tool Kyushu University Pure
Academic Degree
Doctor of Philosophy
Country of degree conferring institution (Overseas)
Field of Specialization
Midwifery, Maternity Nursing, Family Nursing
Total Priod of education and research career in the foreign country
Research Interests
  • Midwifery
    Family Nursing
    keyword : Midwifery, Family Nursing
Academic Activities
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1. Yoshiko Suetsugu, Shuji Honjo, Mari Ikeda, Kiyoko Kamibeppu, The Japanese version of the Postpartum Bonding Questionnaire
Examination of the reliability, validity, and scale structure, Journal of Psychosomatic Research, 10.1016/j.jpsychores.2015.02.008, 79, 1, 55-61, 2015.07, Objective: The purpose of this study was to develop the Japanese version of the Postpartum Bonding Questionnaire (PBQ) to gather data on Japanese mothers for comparison with other cultures and to examine the scale structure of the PBQ among Japanese mothers. Methods: We administered the PBQ to a cross-section of 244 mothers 4. weeks after delivery and again 2. weeks later to 199 mothers as a retest to examine reliability. We used exploratory factor analysis to evaluate the factor structure of the PBQ. Correlations with the Mother-to-Infant Bonding Scale (MIBS), the Maternal Attachment Inventory (MAI), Edinburgh Postnatal Depression Scale (EPDS), and sociodemographic variables were calculated for validation. Results: The 14-item version of the PBQ extracted by exploratory analysis consisted of four factors: 'impaired bonding', 'rejection and anger', 'anxiety about care', and 'lack of affection'. We found significant correlations of the total scores of the PBQ and the 14-item version of the PBQ positively with the MIBS and negatively with the MAI. Moderate significant correlations with total scores were also found with the EPDS. Total scores for primiparous and depressed mothers were higher than those for multiparous mothers and mothers without depression. Conclusion: The results of this study demonstrated the reliability and validity of the PBQ and the 14-item version of the PBQ in Japanese mothers 4. weeks after delivery..
2. Yoshiko Suetsugu Megumi Haruna Kiyoko Kamibeppu, A longitudinal study of bonding failure related to aspects of posttraumatic stress symptoms after childbirth among Japanese mothers, BMC Pregnancy Childbirth, 10.1186/s12884-020-03099-0., 20, 1, 434, 2020.07, Background: Posttraumatic stress symptoms (PTSS) after childbirth may affect mother-infant bonding. This study examined the relationship between aspects of PTSS after childbirth and bonding failure for mothers at 1 month and 4 months after delivery.

Methods: This longitudinal study surveyed 130 mothers at 1 month (T1) and 4 months (T2) after delivery. We performed multiple regression analysis with the Postpartum Bonding Questionnaire (PBQ) as the dependent variable and the Impact of Event Scale-Revised (IES-R), Edinburgh Postnatal Depression Scale (EPDS), Relationship Questionnaire (RQ), Family Adaptation, Partnership, Growth, Affection, and Resolve score (F.APGAR), and demographic data as independent variables.

Results: The rate of mothers with an IES-R score of ≥ 25 was 6.2% at T1 and 3.8% at T2. The IES-R and the EPDS were relevant factors for the PBQ at T1. The IES-R was not a relevant factor, but the EPDS was a relevant factor for the PBQ at T2. The IES-R at T1 was not a predictor for the PBQ at T2. The PBQ at T1 was the largest predictor for the PBQ at T2, when compared with the EPDS, F.APGAR, and dismissive attachment pattern (RQ) at T1.

Conclusions: PTSS after childbirth had a strong influence on bonding failure at T1. However, the important factor affecting bonding failure was not PTSS after childbirth, but depression at T2. If PTSS after childbirth are accompanied by depression at T2, bonding failure may be affected. Bonding failure affected by PTSS after childbirth at T1 could affect bonding failure at T2. Health professionals should assess the degree of PTSS after childbirth and start to care for mothers at T1.

Keywords: Bonding failure; Japanese mother; Postpartum; Posttraumatic stress disorder after childbirth; Posttraumatic stress symptoms after childbirth..
Educational Activities
Midwifery, Maternity Nursing