Survey of Midlife in Japan (MIDJA): Biomarker Project, 2009-2010

Resource Type
Dataset : clinical data, survey data
  • Markus, Hazel Rose
  • Coe, Christopher L.
  • Ryff, Carol D.
  • Karasawa, Mayumi
  • Kawakami, Norito
  • Kitayama, Shinobu
Other Title
  • Version 2 (Subtitle)
Collective Title
  • Midlife in the United States (MIDUS) Series
Publication Date
Publication Place
Ann Arbor, Michigan
  • Inter-University Consortium for Political and Social Research
Free Keywords
Schema: ICPSR
aging; biomarkers; crosscultural differences; health status; older adults
  • Abstract

    The MIDJA Biomarker study obtained biological assessments from a subsample (n=382) of MIDJA Survey (ICPSR 30822) respondents (N=1027). Participants traveled to a clinic near 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. The questionnaire included assessments of conditions and symptoms, major health and life events, nutrition/diet, and additional psychosocial measures (anxiety, depression, relationship quality, control etc.). These measures parallel those in a national longitudinal sample of midlife Americans known as MIDUS (ICPSR 4652: MIDUS II and ICPSR 2760: MIDUS I). The central objective is to compare the Japanese sample (MIDJA) with the United States sample (MIDUS) to test the hypotheses regarding cultural differences in aging health and well-being as well as in how psychosocial factors are linked with biological factors known to influence profiles of disease and disability.
  • Methods

    Presence of Common Scales: See the "Documentation of Scales and Constructed Variables in MIDJA Biomarker" available through the ICPSR and NACDA Web sites for complete information regarding the scales for the MIDJA Biomarker data collection.
  • Abstract


    • DS0: Study-Level Files
    • DS1: Aggregate Data
    • DS2: Stacked Medication Data
Temporal Coverage
  • Time period: 2009-01--2010-04
  • 2009-01 / 2010-04
  • Collection date: 2009-01--2010-04
  • 2009-01 / 2010-04
Geographic Coverage
  • Asia
  • Japan
  • Tokyo
Sampled Universe
A subsample of the MIDJA Survey sample (ICPSR 30822) which is comprised of non-institutionalized, Japanese-speaking adults, aged 30-79 and living in one of the 23 wards of Tokyo from April 2008-September 2008. Smallest Geographic Unit: city
This data is a subsample of the MIDJA Survey. There were two eligibility criteria for this second phase of the data collection: (1) completed the initial survey phase and (2) expressed interest in participating in the second, biomarker, phase by returning a post card to CRS as described above.
2020-07-07 The DS1 Aggregate Data was updated to correct value labels in the variable J1SQ1.2019-03-28 This update includes an expanded version of DS1 Aggregate Data along with several documentation changes. Question text and online analysis tools have been added to DS1. DS2 Stacked Medication Data has been updated to improve usability and add question text. No changes to the data in DS2 have occurred.2018-03-20 A second dataset was added to the study (DS2: Stacked Medication file). And existing data files and documents were re-submitted to reflect the new change in the Study title.2014-07-03 This is a subsample of the MIDJA Survey.
This version of the study is no longer available on the web. If you need to acquire this version of the data, you have to contact ICPSR User Support (
Alternative Identifiers
  • 34969 (Type: ICPSR Study Number)
  • Is previous version of
    DOI: 10.3886/ICPSR34969.v3
  • Is new version of
    DOI: 10.3886/ICPSR34969.v1
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Update Metadata: 2020-07-07 | Issue Number: 3 | Registration Date: 2018-03-20