Survey of Midlife in Japan (MIDJA 2): Biomarker Project, 2013-2014

In 2008, with funding from the National Institute on Aging (NIA), baseline survey data were collected from a probability sample of Japanese adults (N=1,027) aged 30 to 79 from the Tokyo metropolitan area, resulting in the Survey of Midlife in Japan (MIDJA) [ICPSR 30822]. In 2009-2010, biomarker data was obtained from a subset (n=382) of these cases (MIDJA Biomarker) [ICPSR 34969].
The survey and biomarker measures obtained, parallel those in a national longitudinal sample of Americans known as Midlife in the United States (MIDUS) [ICPSR 4652: MIDUS 2 and ICPSR 2760: MIDUS 1]. The central objective was to compare the Japanese sample (MIDJA) with the United States sample (MIDUS) to test hypotheses about the role of psychosocial factors in the health (broadly defined) of mid- and later-life adults in Japan and the United States
In 2012, with additional support from NIA, a longitudinal follow-up of the MIDJA sample was conducted resulting in a second wave (N=657) of survey data (MIDJA 2) [ICPSR 36427].
This collection reflects data from 2013-2014, when a second wave of biomarker data was obtained from a sub-sample (n=328) of those who completed the MIDJA 2 survey. Among this group, about 75 percent (n=243) also completed the first wave of biomarker assessments.
Participants traveled to a clinic on the University of Tokyo campus where biomarker data (vital signs, morphometric assessments, blood assays, and medication data) were obtained. Participants also provided daily saliva samples for cortisol assessment and completed a self-administered medical history questionnaire, as well as a time preference questionnaire.
The medical history questionnaire included assessments of conditions and symptoms, major health and life events, nutrition/diet, and additional psychosocial measures (anxiety, depression, relationship quality, control, etc.).
The time preference questionnaire was used to collect respondents' opinions on management of money and assets given hypothetical scenarios.
Demographic variables include age, gender, and marital status.

2008年，依托美国国家老龄化研究所（National Institute on Aging, NIA）的资助，研究人员针对东京都市区30至79岁的日本成年人开展概率抽样（总样本量N=1027）并收集基线调查数据，由此形成日本中年健康调查（Survey of Midlife in Japan, MIDJA）[ICPSR 30822]。2009-2010年，研究人员从该样本中抽取子集（n=382）收集生物标志物数据，即MIDJA生物标志物数据集[ICPSR 34969]。
本研究采用的调查与生物标志物测量方案，与美国国家级纵向样本“美国中年健康调查（Midlife in the United States, MIDUS）”[ICPSR 4652：MIDUS 2及ICPSR 2760：MIDUS 1]的测量方案保持一致。本研究的核心目标为对比日本样本（MIDJA）与美国样本（MIDUS），以检验关于心理社会因素在日本及美国中老年人群广义健康中所发挥作用的相关假说。
2012年，依托美国国家老龄化研究所的额外资助，研究人员对MIDJA样本开展纵向追踪调查，形成第二轮调查数据（MIDJA 2），总样本量N=657[ICPSR 36427]。
本数据集收录了2013-2014年的相关数据：研究人员从完成MIDJA 2调查的受试者中抽取亚样本（n=328），收集第二轮生物标志物数据。其中约75%的受试者（n=243）同时完成了第一轮生物标志物评估。
受试者前往东京大学校园内的临床中心，完成了包含生命体征测量、形态计量学评估、血液检测及用药数据采集在内的生物标志物数据收集工作。此外，受试者还提交了每日唾液样本用于皮质醇检测，并填写了自填式健康史问卷与时间偏好问卷。
自填式健康史问卷涵盖疾病与症状评估、重大健康与人生事件、营养/饮食状况，以及额外的心理社会测量指标（如焦虑、抑郁、人际关系质量、掌控感等）。
时间偏好问卷用于收集受试者在假设情境下关于金钱与资产管理的观点。
本数据集包含的人口统计学变量包括年龄、性别及婚姻状况。

搜集汇总

背景与挑战

背景概述

该数据集是日本中年生活调查（MIDJA 2）的第二波生物标志物项目数据，收集于2013-2014年，包含328名东京地区成年人的临床生物标志物、医学史和心理社会测量数据。其核心特点是通过与美国的MIDUS研究对比，旨在分析文化差异对中年及老年人健康与生物心理社会因素关联的影响，属于纵向跨文化比较研究。