BACKGROUND: Self-care is increasingly recognized as the foundation of person-centered healthcare and a key driver for simultaneously improving population health outcomes and reducing healthcare expenditures. While the Self-Care Inventory (SCI) has been validated in several languages, Japan lacks a standardized instrument for assessing self-care in the general adult population. Moreover, it remains unclear whether the SCI reflects culturally specific self-care behaviors and retains its psychological measurement properties in non-Western contexts. Addressing both aspects, this study aimed to evaluate the Japanese version of the SCI (JSCI) in terms of its psychometric properties and its association with concrete health behaviors. METHODS: We adapted the JSCI following COSMIN guidelines using forward/backward translation, expert review, and cognitive debriefing. Psychometric evaluation was based on two samples: a nationwide web-based survey (n = 504) and a community-based paper survey (n = 75). Structural validity was examined via CFA; internal consistency via Cronbach's alpha and McDonald's omega; and test-retest reliability via ICCs. Convergent and criterion validity were assessed through correlations with relevant psychological constructs. Measurement invariance and DIF across modes were tested, and associations with five external self-care behaviors were evaluated using AUC. RESULTS: The hypothesized three-factor structure of the JSCI was supported across both administration modes (CFI = 0.926-0.942; SRMR < 0.06), although some subscales had elevated RMSEA. Internal consistency was acceptable to high (α = 0.75-0.85; ω = 0.81-0.92). ICCs indicated moderate to good temporal stability. JSCI scores correlated with self-care efficacy and other related constructs, supporting convergent and criterion validity. Configural invariance was confirmed, and no significant DIF was detected across modes. JSCI scores modestly discriminated individuals engaging in concrete self-care behaviors such as physical activity, strength training, Helicobacter pylori testing, and having a regular primary or dental care provider (AUCs = 0.62-0.80). CONCLUSIONS The JSCI demonstrated satisfactory psychometric properties and structural validity across diverse research settings. Its observed associations with a range of meaningful self-care behaviors support the scale's ecological and practical relevance in the Japanese context. The JSCI may serve as a reliable tool for evaluating and promoting self-care in both research and population health initiatives.
Humans ; Japan ; Self Care/statistics & numerical data* ; Psychometrics ; Male ; Female ; Adult ; Cross-Sectional Studies ; Middle Aged ; Reproducibility of Results ; Surveys and Questionnaires ; Young Adult ; Aged ; Health Behavior ; Translations ; East Asian People

Europe has a long history with its own traditional medicines. In Germany, the practice of traditional European and Asian medicine along with modern medicine is called Integrative Medicine. The pain clinics at Munich University, TCM Klinik Bad Kotzting, Immanuel Klankenhaus and Zen Haus Klinik are well-known centers of Integrative Medicine in Germany. We visited these hospitals and clinics and report on the state of their treatment.
Four-week programs in chronic pain, traditional Chinese medicine, natural therapy, and traditional Japanese medicine with aromatherapy are given at these facilities. Moreover, Complementary and Alternative medicines are widely covered by public or private insurance. And one reason for the spread of Integrative Medicine may be these social conditions, in addition to historical background.

The Great East Japan earthquake and tsunami disaster that occurred on March 11, 2011 seriously destroyed Japanese social activities the medical system included. We provided medical support to the damaged area, and mainly performed Oriental medicine. Traditional methods using physical diagnoses and the treatments with herbs, acupuncture, and massage were effective, where any infrastructure had suffered or any modern medical facilities had been destroyed. Acute phase infectious disease, common colds, and hypothermia were dominant. Allergies increased two weeks later, and there was much mental distress, and chronic pain symptoms one month later. We prescribed Kampo herbal medicines for common colds, hypothermia, allergies, and mental distress. Moreover, we also performed acupuncture and kneaded patients' body to reduce pain, stiffness, and edema. These treatments were effective for both physical and mental distress. Thus we believe that Oriental medicine is valuable in disaster situations.