The second phase of the Chiba Study of Mother and Child Health (C-MACH) was initiated to investigate how environmental exposures from the fetal period to early childhood influence maternal and child health outcomes. The sub-cohort focuses specifically on detailed assessments of indoor environmental factors and neighbourhood-built and social environments. By integrating environmental metrics with biological, behavioural and sociodemographic data, the study aims to elucidate their role in the development of allergies, neurodevelopmental disorders and other non-communicable diseases in early life.

Between June 2021 and April 2023, 505 pregnant women were enrolled in the second phase of the C-MACH main study. Of these, 298 participants consented to join the sub-cohort study, including 258 in the sleep and physical activity monitoring option (Option 1) and 148 in the indoor allergen exposure sub-study (Option 2). The study includes biological sampling, environmental monitoring and repeated questionnaire surveys. At baseline, 253 live births were recorded from 251 pregnancies.

Of the 298 women, 272 completed early pregnancy questionnaires. The mean maternal age was 33.1 years (SD 4.6); 97.8% were married. University-level education was reported by 51.0% of mothers and 53.7% of fathers. Most households had an annual income of 6 to

Longitudinal follow-up will continue until the children reach age 15. Future analyses will examine associations between environmental exposures and allergic, developmental, endocrine/metabolic and obesity-related outcomes.

To investigate treatment preferences of Japanese patients with locally advanced or metastatic urothelial carcinoma (la/mUC).

A discrete-choice experiment survey methodology was used to elicit patient preferences for attributes of la/mUC treatment, including adverse events (nausea/vomiting, neuropathy, alopecia and maculopapular rash), hospital stay requirements for treatment administration and overall survival. A multinomial logistic regression model was used to estimate treatment preferences. Coefficients of the model were then used to calculate the relative importance of each treatment attribute.

Participants were recruited through healthcare facilities with urology departments across Japan.

The study included 109 patients (72.5% male; mean (SD) age, 71.3 (8.9) years). Patients preferred treatments that minimised adverse events that could affect their daily activities, had a more favourable survival profile and did not require hospital stays for administration. Neuropathy emerged as the most important attribute to patients when making treatment decisions (relative attribute importance (RAI), 27.7%), followed by nausea/vomiting (RAI, 27.3%), maculopapular rash (RAI, 16.5%), hospital stay requirements (RAI, 12.1%), alopecia (RAI, 8.2%) and overall survival (RAI, 8.1%). Findings were similar across various subgroup analyses, though patients who were chemotherapy-experienced prioritised avoidance of neuropathy and nausea/vomiting more highly than those who were chemotherapy-naïve.

In this study, Japanese patients with la/mUC were more concerned about reduced quality of life due to adverse events than extending survival by 6 months. Patients, clinicians and other members of the care team need to communicate frequently and candidly about a patient’s well-being.

Temperature control is a fundamental intervention for neuroprotection following resuscitation from cardiac arrest. However, evidence regarding the efficacy of hypothermia in post-cardiac arrest syndrome (PCAS) remains unclear. Retrospective studies suggest that the clinical effectiveness of hypothermia may depend on the severity of PCAS. The R-CAST OHCA trial aims to compare the efficacy of hypothermia versus normothermia in improving 30-day neurological outcomes in patients with moderately severe PCAS following out-of-hospital cardiac arrest.

The multicentre, single-blind, parallel-group, superiority, randomised controlled trial (RCT) is conducted with the participation of 35 emergency and critical care centres and/or intensive care units at academic and non-academic hospitals. The study enrols moderately severe PCAS patients, defined as those with a revised post-Cardiac Arrest Syndrome for induced Therapeutic Hypothermia score of 5.5–15.5. A target number of 380 participants will be enrolled. Participants are randomised to undergo either hypothermia or normothermia within 3 hours after return of spontaneous circulation. Patients in the hypothermia group are cooled and maintained at 34°C until 28 hours post-randomisation, followed by rewarming to 37°C at a rate of 0.25°C/hour. Patients in the normothermia group are maintained at normothermia (36.5°C–37.7°C). Total periods of intervention, including the cooling, maintenance and rewarming phases, will occur 40 hours after randomisation. Other treatments for PCAS can be determined by the treating physicians. The primary outcome is a favourable neurological outcome, defined as Cerebral Performance Category 1 or 2 at 30 days after randomisation and compared using an intention-to-treat analysis.

This study has been approved by the Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences and Okayama University Hospital, Ethics Committee (approval number: R2201-001). Written informed consent is obtained from all participants or their authorised surrogates. Results will be disseminated via publications and presentations.

jRCT1062220035.