Valuation survey for SF-6Dv2 in Japan based on the international protocol.

Purpose: The SF-6D Classification System was recently updated (SF-6Dv2). We performed a valuation survey to construct a value set for the SF-6Dv2 in Japan.

Methods: An online discrete choice experiment (DCE) with duration was used to estimate a value set for the SF-6Dv2 for Japan based on public preferences.

Health-related quality of life and caregiver burden of pediatric patients with inborn errors of metabolism in Japan using EQ-5D-Y, PedsQL, and J-ZBI.

Purpose: Inborn errors of metabolism (IEM) are known with poor long-term health concerns; however, the health-related quality of life (HRQoL) and the burden placed on families remain unclear. This study investigated the self- and proxy-reported HRQoL of pediatric patients with IEM with or without developmental disabilities and the burden placed on their caregivers.

Methods: Patients with IEM aged 8-15 years and their caregivers were asked to respond to the Pediatric Quality of Life Inventory (PedsQL), EuroQoL five-dimension questionnaire for younger populations (EQ-5D-Y), and Japanese version of the Zarit Caregiver Burden Interview (J-ZBI).

Japanese value set for the EORTC QLU-C10D: A multi-attribute utility instrument based on the EORTC QLQ-C30 cancer-specific quality-of-life questionnaire.

Purpose: This study aimed to develop a Japanese value set for the EORTC QLU-C10D, a multi-attribute utility measure derived from the cancer-specific health-related quality-of-life (HRQL) questionnaire, the EORTC QLQ-C30. The QLU-C10D contains ten HRQL dimensions: physical, role, social and emotional functioning, pain, fatigue, sleep, appetite, nausea, and bowel problems.

Methods: Quota sampling of a Japanese online panel was used to achieve representativeness of the Japanese general population by sex and age (≥ 18 years).

Comparison of four value sets derived using different TTO and DCE approaches: application to the new region-specific PBM, AP-7D.

Background: AP-7D is a newly developed preference-based measure (PBM) in East and Southeast Asia. However, no value set has been established yet. Comparison of the characteristics of value sets obtained by different methods is necessary to consider the most appropriate methodology for valuation survey of AP-7D.

Are Web-Based Valuation Surveys for Preference-Based Measures as Reliable as Face-to-Face Surveys? TTO, DCE and DCE with Duration.

Background: Valuation surveys of preference-based measures are typically conducted face-to-face or on web panels. In this survey, we considered whether face-to-face and online surveys were reliable using three tasks: composite time trade-off (cTTO), discrete choice experiment (DCE), and DCE with duration.

Methods: Respondents (aged 20-69 years) for both face-to-face (N = 1000, target sample size) and web surveys were selected through quota sampling by sex and age from each panel of the general population in Japan.

Cost-effectiveness analysis of lifestyle interventions for preventing kidney disease in patients with type 2 diabetes.

Background: Lifestyle interventions in patients with type-2 diabetes contribute to reducing the incidence of chronic kidney disease. The cost-effectiveness of lifestyle interventions to prevent kidney disease in patients with type-2 diabetes remains undetermined. We aimed to develop a Markov model from a Japanese healthcare payer's perspective focusing on the development of kidney disease in patients with type-2 diabetes and examine the cost-effectiveness of lifestyle interventions.

Comparison of physicians' and dentists' incident reports in open data from the Japan Council for Quality Health Care: a mixed-method study.

Background: Patient safety is associated with patient outcomes. However, there is insufficient evidence of patient safety in the dental field. This study aimed to compare incidents reported by dentists and physicians, compare the type of errors made by them, and identify how dentists prevent dental errors.

Impacts of the preceding cancer-specific health-related quality of life instruments on the responses to the subsequent EQ-5D-5L.

Background: In clinical studies, the EQ-5D-5L is often employed with disease-specific health-related quality of life instruments. The questions in the former are more general than the latter; however, it is known that responses to general questions can be influenced by preceding specific questions. Thus, the responses to the EQ-5D-5L have the possibility of being influenced by the preceding disease-specific health-related quality of life instruments.

Critical Incident Reports Related to Ventilator Use: Analysis of the Japan Quality Council National Database.

Objective: This study aimed to assess the factors associated with medical device incidents.

Methods: In this mixed-methods study, we used incident reporting data from the Japan Council for Quality Health Care. Of the 232 medical device-related reports that were downloaded, 34 (14.

Gradient Boosted Tree Approaches for Mapping European Organization for Research and Treatment of Cancer Quality of Life Questionnaire Core 30 Onto 5-Level Version of EQ-5D Index for Patients With Cancer.

Objectives: This study aimed to develop direct and response mapping algorithms from the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire Core 30 onto the 5-level version of EQ-5D index based on the gradient boosted tree (GBT), a promising modern machine learning method.

Methods: We used the Quality of Life Mapping Algorithm for Cancer study data (903 observations from 903 patients) for training GBTs and testing their predictive performance. In the Quality of Life Mapping Algorithm for Cancer study, patients with advanced solid tumor were enrolled, and the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire Core 30 and 5-level version of EQ-5D were simultaneously evaluated.

Choking injuries: Associated factors and error-producing conditions among acute hospital patients in Japan.

Choking can lead to mortality and residual impairments. This study aimed to determine the factors associated with choking among acute hospital patients and examine error-producing conditions to suggest choking-prevention policies. Among 36,364 cases reported by hospital staff at an acute university hospital from 2012 to 2018 were examined using a retrospective study, 35,440 were analysis as the number of cases analysed for the study.

Reported Incidents Involving Non-medical Care Workers and Nursery Teachers in Hospitals in Japan: An Analysis of the Japan Council for Quality Health Care Nationwide Database.

Objective With the shortage of medical staff, the birth rate decline, and aging populations in some countries, task shifting from specific medical staff to non-medical care workers in hospitals has been implemented as a short-term solution. Incident reporting reduces preventable patient errors, improves the quality of healthcare services, and contributes to patient safety. However, research focused on the expanding roles of non-medical staff who provide direct care for patients is lacking.

Cost-Effectiveness of Trastuzumab With or Without Chemotherapy as Adjuvant Therapy in HER2-Positive Elderly Breast Cancer Patients: A Randomized, Open-Label Clinical Trial, the RESPECT Trial.

Background And Objective: Trastuzumab is a standard care as adjuvant chemotherapy (AdjCT) for patients with human epidermal growth factor receptor 2 (HER2)-positive primary breast cancer (BC) in Japan. However, no reports have evaluated its economics for patients with HER2-positive BC over 70 years of age. The objective of this study was to evaluate the cost-effectiveness of HER2-targeted trastuzumab + chemotherapy in Japan, comparing it with trastuzumab monotherapy.

Estimating Value-Based Price and Quantifying Uncertainty around It in Health Technology Assessment: Frequentist and Bayesian Approaches.

Background: Although several statistical methods have been developed to inform decision making on reimbursement under uncertainty (e.g., expected net benefit, cost-effectiveness acceptability curves, and expected value of perfect information [EVPI]), those for value-based pricing are limited.

Cost-effectiveness of 12 months of capecitabine as adjuvant chemotherapy for stage III colon cancer: preplanned cost-effectiveness analysis of the JFMC37-0801 study.

Objectives: We evaluated the cost-effectiveness of a 12-month regimen of oral capecitabine versus a standard 6-month regimen as postoperative adjuvant chemotherapy for stage III colon cancer.

Methods: We utilized patient-level data from a multi-institutional randomized controlled trial (JFMC37-0801) that investigated prolonged oral fluoropyrimidine monotherapy. The analysis considered three health states: stable disease, post-metastasis, and death.

Japanese preference weights of the Adult Social Care Outcomes Toolkit for Carers (ASCOT-Carer).

Purpose: We developed preference weights of the Adult Social Care Outcomes Toolkit for Carers (ASCOT-Carer) in Japan.

Methods: We used best-worst scaling (BWS) and composite time trade-off (cTTO) to determine the preference weights for ASCOT-Carer states in the general population. TTO values were applied to convert the BWS scores to utilities.

Minimal important differences of EORTC QLQ-C30 for metastatic breast cancer patients: Results from a randomized clinical trial.

Purpose: To establish minimal important differences (MIDs) for the European Organisation for Research and Treatment for Cancer Quality of life Questionnaire core 30 (EORTC QLQ-C30) in patients with metastatic breast cancer.

Methods: The dataset was obtained from the SELECT BC-CONFIRM randomized clinical trial. Anchors obtained from patients (transition items) and clinicians (performance status) were used for anchor-based methods.

Japanese Population Norms of EQ-5D-5L and Health Utilities Index Mark 3: Disutility Catalog by Disease and Symptom in Community Settings.

Objectives: This study aimed to establish the Japanese population norms of the EQ-5D-5L and Health Utilities Index Mark 3 (HUI3) and estimate the disutility associated with diseases and symptoms.

Methods: We performed a door-to-door survey of the general population by random sampling. The planned sample size was 10 000 residents (age ≥16 years) of 334 districts in Japan.

EQ-5D-Y Population Norms for Japanese Children and Adolescents.

Objective: This study was aimed at establishing population norms of EQ-5D-Y in Japan by a nationwide large sample survey.

Methods: We performed a door-to-door survey by visiting the homes of children/adolescents aged 8-15 years selected by random sampling. The planned sample size was 3600 from 100 districts in Japan.

Valuation Survey of EQ-5D-Y Based on the International Common Protocol: Development of a Value Set in Japan.

Background: EQ-5D-Y is a preference-based measure for children and adolescents (aged 8-15 y). This is the first study to develop an EQ-5D-Y value set for converting EQ-5D-Y responses to index values.

Methods: We recruited 1047 respondents (aged 20-79 y) from the general population, stratified by gender and age group, in 5 Japanese cities.

Prospective observational study estimating willingness-to-pay for breast cancer treatments through contingent valuation method in Japanese breast cancer patients (JCOG1709A).

In April 2016, the Japanese government introduced health technology assessment as a response to rising medical expenses due to 'medical innovation'. This study investigates how Japanese breast cancer patients who received treatment in Japan consider the financial value (willingness-to-pay; WTP) for their life and health by using the contingent valuation method (CVM) prospectively. First, 168 patients (84 primary breast cancer patients and 84 metastatic breast cancer patients) were pre-examined their WTP with dichotomous-choice method survey form.