1.Development of a Machine Learning Model to Predict Early Ambulation after Proximal Femoral Fracture Surgery
Shu AKIBA ; Tetsuya KATAKURA ; Chinatsu KUTSUMA ; Mei AMANO ; Junko MIZUTANI
The Japanese Journal of Rehabilitation Medicine 2026;():25010-
Objective: This study aimed to develop a predictive model for early ambulation using clinical indicators obtained immediately after surgery in patients with proximal femoral fractures.Methods: Patients who sustained a proximal femoral fracture and underwent surgery between April 2022 and April 2024, and whose medical records confirmed independent ambulation of at least 10 m before injury, were included. Those who died or had postoperative weight-bearing restrictions were excluded. The outcome variable was the ability to walk 10 meters without assistance at two weeks postoperatively. Predictive features included body mass index (BMI), abbreviated mental test score (AMTS), American Society of Anesthesiologists physical status, use of walking aids pre injury, intraoperative blood loss, and surgical method. A gradient boosting decision tree was used to develop the model.Results: A total of 122 patients were included. Key predictors of ambulation at two weeks were AMTS, BMI, and the use of an intramedullary nail. The model achieved a recall of 72.7%, a precision of 66.6%, and an ROC AUC of 0.80 in an independent test dataset.Conclusion: This study demonstrated the feasibility of a machine learning model to predict early ambulation using immediate postoperative indicators. As walking ability at two weeks is associated with long-term gait recovery and discharge outcomes, this model may aid in optimizing rehabilitation planning and discharge strategies.
2.Social networking and help-seeking behaviors in relation to the health of pregnant and puerperal Brazilian women in Japan
Hiroyo HATASHITA ; Hitomi SUZUKI ; Shiho KAWATA ; Mayumi MIZUTANI ; Takayuki NISHII ; Junko KONDO ; Denise M. Saint Arnault
Journal of International Health 2022;37(1):25-33
Introduction This study aimed to clarify social networking and help seeking behaviors in relation to the health of pregnant and puerperal Brazilian women in Japan, using unanalyzed data collected in the article titled “Socio-cultural factors affecting the health of pregnant and puerperal Brazilian women in Japan” published in this journal.Methods We conducted semi-structured interviews of pregnant and puerperal Brazilian women aged ≥20 years in their homes in Prefectures A and B during 2013-2014. We used the Japanese version of the interview guide based on the cultural determinants of help seeking developed by Arnault. The analysis was guided by analytic ethnography, and core themes were derived.Results The interviews were conducted with 18 women. Their mean age was 32.4 years (5 women in their 20s and 13 women in their 30s). The average length of stay was 12.6 years (6 women: <10 years and 12 women: ≥10 years). Regarding residential status, 12 women were permanent residents. Two categories for social networking were derived: (1) limited social interaction and (2) reliance on family and trusted others. Two categories for help-seeking behaviors were derived: (1) reliance on informal resources close to them and (2) self-reliant problem solving.Conclusions The social networking and help-seeking behaviors of pregnant and puerperal Brazilian women in Japan were related to their way of cultivating relationships in their transnational life as migrant workers. Their behaviors were also related to their perception on the family, their religion, and their self-reliant problem-solving behaviors.
3.Impact of Expanding Pharmacist Duties in Wards on Nursing Duties
Chinami SUZUKI ; Junko KOBAYASHI ; Miyuki CHIBA ; Shigoh TAKATORI ; Akifumi MIZUTANI ; Hiroshi SATO ; Makiko MORITA ; Junichi KUBO ; Akihiko TAKAGI ; Kimihito SATO
Journal of the Japanese Association of Rural Medicine 2020;69(2):137-142
Engaru-Kosei General Hospital expanded its pharmacist duties in hospital wards in April 2018 following the nationwide switch to out-of-hospital prescriptions. The purpose of this study was to examine the effect of pharmacists’ ward duties on nursing duties. Pharmacists expanded their duties to cover drug distribution management, infusions of total parenteral nutrition (TPN) mixed with drugs, and aseptic preparation of 24-h infusions (including peripheral parenteral nutrition). The effects were compared between April 2018 before the expansion of duties and May-September 2018 after the expansion, and we compared the number of meetings set up to discuss nurses’ overtime hours and patient problems. In addition, interviews were conducted about the changes experienced on site. Drug distribution management averaged 3,150 cases/month. The number of TPN mixed infusions was 25 cases/month before expansion and this increased to 88 cases/month after expansion. The number of mixed injections of 24-h infusions was 296/month. Nurses' overtime hours did not decrease significantly, but the number of meetings increased from 47/month to 79.4/month. In the interviews, positive responses were obtained about, for example, the increased number of meetings held and more time for patient care. The pharmacist and the nurse collaborated to improve work by using their expertise, we think that the results obtained from work improvement contributed to the improvement of medical quality and medical safety.


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