Becoming “Co-ed”: A Protestant Gift to China—Replication Data, China,2026 (ICPSR 311155)
This deposit contains the analysis-ready data and code used to reproduce the numbered tables and non-map figures in the associated article.
Abortion Pills Dubai +971568545917 Abu Dhabi Mifepristone Misoprostol Cytotec DXB))? (ICPSR 311156)
Dr. Leen (+971568545917 ),We provides Mifepristone, Misoprostol, Cytotec 200mcg for Abortion in Dubai, Abu Dhabi, Sharjah, Ajman, Alain, Fujairah, Ras Al Khaimah, Umm Al Quwain + (UAE) to end/stop your pregnancy. It is a basic healthcare need for millions of women and girls who can become pregnant within United Arab Emirates. It is estimated that 1 in 4 pregnancies end in an abortion every year so don’t be shy if you are not ready to be a mother because this is your life and you determine what you want. In UAE (Dubai) pregnancy termination/abortion is common and access to safe and legal abortion services is far from guaranteed for those who may need abortion services, this is why Dr. Leen is here for your rescue because she understands how it feels so reach her for best support during this situation on her direct line +971568545917 Abortion pill / Cytotec 200mcg (Misoprostol), Mifepristone, Mifegest-kit, Miso clear, Emergency contraceptive pills, Morning sex pills, pills, pills to prevent pregnancy 72 hours after sex is when you take medicines that you get from a trained doctor to end an early pregnancy. In a clinic, abortion is done in a health center by a trained doctor. Both kinds of abortion are safe and effective.
Proximity, Product Complexity and Implications for India’s Industrial Policy (ICPSR 310989)
This data is taken from the atlas of economic complexity 2024, based on HS 2022 4-digit product classification (https://atlas.hks.harvard.edu/data-downloads). from the data, we divide the data into 4 quadrants based on proximity product complexity score based on median values. we list the top left products details.
Population-Weighted Standardized Tobacco Policies (e-cigarette taxes, indoor air laws, flavored tobacco sales restrictions, cigar taxes) and Tobacco Specialty Retailers in the USA, by state/county and time (ICPSR 204041)
Any publication or other public output using these data, including output produced with an AI agent, must cite the associated peer-reviewed article. The article citation is provided in an example format and may be rendered in the style required by the publication or other venue. Users must also cite the versioned repository record as the source of the data. Where multiple versions of the data exist, we recommend using the most recent version for new projects.E-cigarette Taxes: E-cigarette tax scheme vary across states and localities, making comparisons across states difficult. This project provides standardized e-cigarette tax rates at the state and local levels in the United States.
- 2nd Edition:Publication: Cotti, C., Nesson, E., Pesko, M. F., & Phillips, S. (2026). Standardising the measurement of e-cigarette tax rates in the USA (2nd edition), 2010-2023. Tobacco control, 35(2), 173–178. https://doi.org/10.1136/tc-2024-058618PubMed Link: https://pubmed.ncbi.nlm.nih.gov/39580153/Download: E-cig Tax Version 2, 2010-2023.xlsxDescription: The downloadable data file includes 2 tabs:
- Closed System E-cigarette Taxes by State/County from 2010 to 2023, 35% Retailer Markup, Time-Invariant Tax Units
- Open System E-cigarette Taxes by State/County from 2010 to 2023, 35% Retailer Markup, Time-Invariant Tax Units
- 1st Edition:Publication: Cotti, C., Nesson, E., Pesko, M. F., Phillips, S., & Tefft, N. (2023). Standardising the measurement of e-cigarette taxes in the USA, 2010-2020. Tobacco control, 32(e2), e251–e254. https://doi.org/10.1136/tobaccocontrol-2021-056865PubMed Link: https://pubmed.ncbi.nlm.nih.gov/34911814/Download: E-cig Tax Version 1, 2010-2020.xlsxDescription: The downloadable Excel file includes 3 tabs:
- E-cigarette Taxes by State/County from 2010 to 2020, 35% Retailer Markup, Time-Invariant Tax Units
- E-cigarette Taxes by State/County from 2010 to 2020, 20% Retailer Markup, Time-Invariant Tax Units
- E-cigarette Taxes by State/County from 2010 to 2020, 35% Retailer Markup, Time-Varying Tax Units
Cigar Taxes: This project provides standardized cigar tax rates at the state and local levels in the United States.
- 1st Edition:
- Publication: Scoblic, G., Fung, R. Y. L., Friedman, A. S., & Pesko, M. F. (2026). Standardising the measurement of cigar tax rates in the USA, 2010-2024. Tobacco control, tc-2026-060077. Advance online publication. https://doi.org/10.1136/tc-2026-060077
- PubMed Link: https://pubmed.ncbi.nlm.nih.gov/42425894/
- Download: StandardizedCigarTaxes_2026.04.25.xlsx
Flavored Tobacco Product Sales Restrictions:This longitudinal dataset describes state and national population coverage and comprehensiveness of flavored tobacco sales from 2010 to 2023 for e-cigarettes, cigarettes, cigars, and smokeless tobacco. Comprehensiveness considers retailer and product exemptions.
- 1st Edition:Publication: Donovan, E. M., Braganza, K., Diaz, M. C., Seidenberg, A. B., Kreslake, J. M., & Pesko, M. F. (2025). Population coverage and comprehensiveness of flavoured tobacco sales restrictions in the USA, 2010-2023. Tobacco control, tc-2025-059293. Advance online publication. https://doi.org/10.1136/tc-2025-059293
- PubMed Link: https://pubmed.ncbi.nlm.nih.gov/41115799/
- Download: Flavored Tobacco Product Sales Restrictions Version 1 - 2010-2023.xlsx
Indoor Air LawsThis database reports US national- and state-level estimates of population coverage of comprehensive and partial indoor smoking restrictions from 1990 to 2021 for bars, restaurants, and workplaces, and comprehensive indoor vaping restrictions from 2006 to 2021 for the same locations. Estimates were calculated by using policy data from the American Nonsmokers' Rights Foundation.
- 1st Edition:Publication: Seidenberg, A. B., Braganza, K., Chomas, M., Diaz, M. C., Friedman, A. S., Phillips, S., & Pesko, M. (2024). Coverage of Indoor Smoking and Vaping Restrictions in the U.S., 1990-2021. American journal of preventive medicine, 67(4), 494–502. https://doi.org/10.1016/j.amepre.2024.06.007
- PubMed Link: https://pubmed.ncbi.nlm.nih.gov/38876294/Download: Vaping and Smoking Indoor Air Laws Version 1, 2010-2021.xlsx
Specialty Tobacco Retail Locations
Specialty tobacco retailer and visitor counts aggregated to the state and county levels. Counts reflect single-month cross-sections: June 2024 (Google - retailer counts) and May 2024 (Advan - visitor counts). Due to data sharing limitations, Advan visitor count data include the most populous states and counties only (top decile). Rates of matching stores between data sources are also provided. Retailer counts from Google include data for all states and counties.
- 1st Edition:Publication: Landini, A., Lowenstein, C., & Pesko, M. F. (2026). Patterns of specialty tobacco retail locations and visitor counts in the USA. Tobacco control, tc-2026-060085. Advance online publication. https://doi.org/10.1136/tc-2026-060085
- PubMed Link: https://pubmed.ncbi.nlm.nih.gov/42552112/Download: Specialty Tobacco Stores, Version 1, 2024.xlsx
Research reported in this project was supported by the National Institute On Drug Abuse of the National Institutes of Health under Award Number R01DA045016. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health.
Exploring Employment for People Who Are Blind or Have Low Vision: Beyond Employment Rates Series Using ACS and SIPP (ICPSR 310098)
This collection includes data used in five studies of employment outcomes for people with visual impairments in the United States. The studies moved beyond simple employment rates to examine 5 topics: part-time versus full-time employment, continuity of employment, disability benefit receipt and work, earnings, and self-employment and other worker classes. Respondents with visual impairments were compared to respondents without visual impairments, and outcomes were also examined by gender where general population data indicated differences. The data provide employment benchmarks for people with visual impairments immediately prior to the COVID-19 pandemic. All five studies used the 2019 American Community Survey (ACS) 1-Year Public Use Microdata Sample. Two studies (Full-Time vs. Part-Time Employment; Social Security Disability Insurance Benefit Receipt) also used Wave 1 of the 2018 SIPP Panel. One study (Continuity of Employment) also used the reengineered four-wave 2014 SIPP Panel.
Democratic Processes Survey – Stealth Democracy – Gallup (April-May 1998) – US sample (ICPSR 310890)
The Democratic Processes Survey was administered via telephone by the Gallup Organization from mid-April to mid-May 1998. The sample consisted of U.S. adults 18 years of age and older. The length of the survey was 28 minutes and had a 53% response rate. The data weight matches the sample to the U.S. adult population based on the most recent U.S. Census. A total of 1,266 people completed the survey. The survey addresses topics relevant to understanding the democratic processes preferred by the American public. Questions include policy and process preferences, opinions about elected officials and the American people, the role people want to play in politics, and their preferred democratic processes covering stealth democracy beliefs.
Perceptions of Congress Survey - Congress as Public Enemy - BOSR (July-October 1992) - US sample (ICPSR 311088)
The Perceptions of Congress Survey addresses what explains people's strong dislike of the U.S. Congress. The telephone survey was administered by the Bureau of Sociological Research at the University of Nebraska-Lincoln. The telephone interviews were conducted from July to October 1992 and had a 57% response rate. A total of 1,433 people completed the survey. The survey items included approval of U.S. institutions, the role of U.S. House of Representatives members, the jobs done by members of Congress, support for reforms of Congress, and more.
Perceptions of the American People Survey - Who Counts as an American - OSU CSR (May-July 2002) - US sample (ICPSR 311090)
This survey digs into how Americans think of themselves in terms of their national identity. The telephone survey was administered by the Ohio State University's Center for Survey Research. Random-digit dialing of households in the 48 contiguous states and the District of Columbia was used to create the sample. An English-speaking respondent within the household was randomly chosen using the "last birthday" selection technique. The sample was limited to U.S.adult citizens. The survey was administered from May to July 2002. Average length of the survey was 31 minutes and 1,254 people finished the survey. Data were weighted to reflect a random sample of the U.S. population based on the 2000 U.S. Census.
Data and Code for: Religious Festivals and Economic Development: Evidence from the Timing of Mexican Saint Day Festivals (ICPSR 161801)
Code for Deep Learning for Solving Economic Models (ICPSR 246993)
Intergenerational Mobility in Ottoman Istanbul: Evidence from Court Records, 1513–1884 (ICPSR 310593)
This data collection supports replication of the article "Intergenerational Mobility in Ottoman Istanbul: Evidence from Court Records" (Explorations in Economic History). It contains two datasets derived from the Istanbul Sharia Court Registers (ISCR) project, which digitized 100 volumes of surviving Istanbul court registers held in Turkish archives. The main mobility dataset records 354,305 father–child pairs observed in court cases between 1513 and 1884, with information on honorific title categories (elite and non-elite military/administrative and religious/judicial titles), pilgrimage status, and court district. The probate dataset contains 2,124 individual estate records used to estimate a wealth score for each title category. Together, the datasets are used to compute three measures of intergenerational mobility — the Altham distance statistic, fraction mobile, and rank-rank slope — across three institutional periods and seven 50-year bins. The collection also includes annotated Python replication code.
National Neighborhood Data Archive (NaNDA): Eating and Drinking Places by Census Tract and ZCTA, United States, 1990-2022 (ICPSR 208751)
This dataset provides annual measures of the number and density of eating and drinking places — including bars and night clubs, retail bakeries, coffee shops, fast food restaurants, delis, pizza restaurants, and sit-down restaurants — per census tract and ZIP Code Tabulation Area (ZCTA) across the United States from 1990 through 2022. Data are derived from the National Establishment Time Series (NETS) database and are available for four geographies: Census Tract 2010, Census Tract 2020, ZCTA 2010, and ZCTA 2020.
The Impact of Connecticut’s Sheff Choice-Based Desegregation Plan on Racial Segregation (ICPSR 246794)
Aging, Health, and Community Participation After Spinal Cord Injury: Cross-Sectional Survey, United States, 2023-2026 (ICPSR 250166)
This study examines aging, community participation, health, function, social support, employment, and quality of life among adults with traumatic spinal cord injury (SCI) living in the community. The study builds on the SCI Longitudinal Aging Study, which began in 1973 and has followed participants over multiple decades.
The data included in this release are cross-sectional survey data collected between May 2023 and June 2026. The study included longitudinal follow-up of existing participants, enrollment of additional cross-sectional cohorts, and qualitative interviews and focus groups with long-term SCI survivors. The major research questions addressed the natural course of participation and satisfaction with participation after SCI; the role of injury severity, functional status, relationship status, social support, peer support, coping strategies, race and ethnicity, health status, employment, and quality of life; and the barriers, facilitators, and life events associated with maintaining participation while aging with SCI.
Participants were adults with traumatic SCI and residual impairment who were at least one year post-injury and age 18 years or older at enrollment. Study samples were drawn from Midwestern and Southeastern United States cohorts, including participants from urban and rural settings. The data cover topics including demographic characteristics, injury characteristics, years since injury, activities of daily living, community participation, satisfaction with participation, social and emotional support, instrumental support, social isolation, relationship status, employment, health conditions, secondary health conditions, life satisfaction, and quality of life.
Career Mentoring Experiences Survey of Adults Who Are Blind or Have Low Vision, 2024 (ICPSR 309933)
This study examined career mentoring experiences and outcomes among U.S. adults who are blind or have low vision. The survey gathered information on how participants connected with their career mentors, characteristics of mentoring relationships (formation, duration, frequency of communication, mentee-mentor similarity), perceived mentoring support functions (career support, psychosocial support, and role modeling), relationship quality and satisfaction, perceived helpfulness of mentors to overall career success and to 21 specific career-related areas, job satisfaction, and demographic and disability characteristics. The dataset supports analyses of how mentor-mentee relationship characteristics and mentoring support functions are associated with perceived career success and job satisfaction among adults who are B/LV.
Hearing Healthcare Policy Data, by state and time (ICPSR 244765)
Any publication or other public output using these data, including output produced with an AI agent, must cite the associated peer-reviewed article. The article citation is provided in an example format and may be rendered in the style required by the publication or other venue. Users must also cite the versioned repository record as the source of the data.
Private Insurance Hearing Aid Mandates:
Private insurance hearing aid mandates have been adopted by an increasing number of states and vary in age eligibility and generosity. This project describes the details of private insurance hearing aid mandates for each state over time.
1st Edition:Publication: Arnold, M. L., Heslin, B. J., Dowdy, M., Kershner, S. P., Phillips, S., Lipton, B., & Pesko, M. F. (2024). Longitudinal Policy Surveillance of Private Insurance Hearing Aid Mandates in the United States: 1997-2022. American journal of public health, 114(4), 407–414. https://doi.org/10.2105/AJPH.2023.307551PubMed Link: https://pubmed.ncbi.nlm.nih.gov/38478867/Download: hear_priv_V2.xlsxDescription: The downloadable Excel file contains:o “Private Insurance Hearing Aid Coverage Mandates Effective Dates and Details, as of January 1, 2023: United States”o “Status of Private Insurance Hearing Aid Coverage Mandates, by State and Month”
Key Policy Features of State Medicaid Hearing Aid Coverage for Adults, 2023
1st Edition:Publication: Arnold, M. L., Tonti, L., Phillips, S., Kershner, S. P., Lipton, B. J., Heslin, B., Ukert, B. D., & Pesko, M. F. (2025). Number Of States Providing Medicaid Hearing Aid Coverage For Adults Increased; Variability Was Substantive, 2017-23. Health affairs, 44(12), 1522–1529. https://doi.org/10.1377/hlthaff.2025.00270PubMed Link: https://pubmed.ncbi.nlm.nih.gov/41329893/Download: hear_mcaidcross_V2.xlsxDescription: The downloadable Excel file contains: “Key Policy Features of State Medicaid Hearing Aid Coverage for Adults, 2023”
Longitudinal Trends in Medicaid Hearing Aid Coverage for Adults in the United States: 2003-2023
1st Edition:Publication: Arnold, M. L., Tonti, L., Phillips, S., Kershner, S. P., Lipton, B., Heslin, B., Ukert, B., Hebert, R., & Pesko, M. F. (2026). Longitudinal Trends in Medicaid Hearing Aid Coverage for Adults in the United States: 2003-2023. American journal of audiology, 1–10. Advance online publication. https://doi.org/10.1044/2026_AJA-25-00204
PubMed Link: https://pubmed.ncbi.nlm.nih.gov/42172530/Download: hear_mcaidlong_V1.xlsxDescription: This Excel workbook contains the following sheets:o Data View: Status of Medicaid Hearing Aid Coverage, by State and Montho State View: Coverage Determination from 01/2003 to 12/2023
Hearing Health Care Professional Workforce
1st Edition:Publication: Garuccio J, Ukert B, Arnold M, Phillips S, Pesko MF. Using supply and demand to identify shortages in the hearing health care professional workforce. JAMA Otolaryngol Head Neck Surg. Published online July 31, 2025. https://doi.org/10.1001/jamaoto.2025.2112PubMed Link: https://pubmed.ncbi.nlm.nih.gov/40742737/Download: hear_prof_V1.xlsxDescription: This Excel workbook contains the following sheets:o State-level Counts of Audiologistso State Count of Hearing Instrument Specialistso State Count of Audiologists and Hearing Instrument Specialists
Research reported in this project was supported by the National Institute on Deafness and Other Communication Disorders, National Institutes of Health (NIH; grant R01 DC019661-01A1). The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health.
CDC/ATSDR Social Vulnerability Index (SVI) Mapping Dashboard (ICPSR 251188)
Code for: Humans-in-the-Loop: The Next Frontier of the Credibility Revolution (ICPSR 247776)
Data and Code for "Optimal Public Transportation Networks: Evidence from the World's Largest Bus Rapid Transit System in Jakarta " (ICPSR 229161)
Data and Code for: Neighborhood Effects and Missing Markets for Opportunity (ICPSR 250816)
JPML Monthly MDL Docket Census 2024-2026 (rescued federal court statistics) (ICPSR 251709)
Data and Code for: Build in Accessibility or Modify Later? Future Dwelling Exposure and Costs in New Australian Housing (ICPSR 251502)
Michigan Metro Area Communities Study (MIMACS) Wave 3, Flint, Michigan, 2024 (ICPSR 39834)
The Michigan Metro Area Communities Study (MIMACS) is a panel survey of select Michigan communities residents aged 18 and older. Flint is one of the communities included in MIMACS. The initial survey in Flint was conducted in 2022 and the sample was drawn from an address-based probability sample of all occupied Flint households. The 3rd survey wave, collected between January 15 - March 18, 2024, researchers invited 823 previously enrolled panelists and 1,554 invitations to a randomly selected address-based refreshment sample of Flint households to participate in a self-administered online or interviewer-administered telephone survey. Survey topics included: Household Composition, Residence and Housing Status; Health, Social Determinants of Health, Long COVID, Mental Health; Disability; Perceptions of Neighborhood; Transportation Mode; Financial Precarity; Perception of Control; Voting; Employment; Demographics.
Justice Community Overdose Innovation Network (JCOIN) 1.0: Brixadi Versus Extended-Release Naltrexone Hub, Client Data, Maryland, 2020-2024 (ICPSR 39913)
FDA Approved Animal Drug Products (Green Book) (ICPSR 251695)
- Green Book (GB) Reports
- GB Monthly Updates (as of August 2026)
- Medicated Feed Mill Licenses & Veterinary Feed Directive Distributor (VFD) notifications
Code for: Physician Competition: Entry and Substitution (ICPSR 246929)
VC Deal Flow Signal: GitHub Engineering Velocity Panel (Q2 2025 - Q2 2026) (ICPSR 309999)
Quarterly longitudinal panel of GitHub engineering velocity for 55 venture-backed startups, 219 startup-period observations across 5 quarters (Q2 2025 through Q2 2026). Each observation records rolling 14-day commit velocity, unique-contributor count, new-repository creation, and a deterministic four-class acceleration label. The panel is descriptive; the accompanying analysis reports a 3.4x association between velocity acceleration with low contributor concentration and later Series A outcomes. CC BY 4.0. Companion working paper: SSRN 6606558, DOI 10.2139/ssrn.6606558. Website: https://gitdealflow.com.
Pilot Study of a Novel Maintenance-Free Remote Wear Time Monitor for Cranial Remolding Orthoses (ICPSR 310131)
The study team has developed a novel Remote Temperature Monitoring (RTM) sensor which automatically uploads temperature data to the Cloud and integrates with both a clinician’s dashboard and an app on the caregiver’s cell phone to allow for real-time monitoring of CRO use. This is the first study to attempt to validate the RTM sensor in a clinical setting.
United States Congressional Roll Call Voting Records, 1789-1990: Reformatted Data (ICPSR 9822)
College and Beyond II (CBII) Course Content Data, [United States], 2000-2021 (ICPSR 38588)
Tsogolo La Thanzi 3 (TLT-3): Household Listing Data, Malawi, 2019 [Healthy Futures] (ICPSR 39855)
Tsogolo la Thanzi (TLT) is a longitudinal study in Balaka, Malwai designed to examine how young people navigate reproduction in an AIDS epidemic. Tsogolo la Thanzi means "Healthy Futures" in Chichewa, which is Malawi's most widely spoken language.
The 2019 Household Listing Data are the result of a new census of the original catchment area, 10 years after the initial study began. These data are supplemental to the main TLT series, providing insights into how the Balaka area developed over the past 10 years. It includes data from all persons living within 7 kilometers of the TLT research center.
Data and code for "Why is the Birth Rate So Low in High-Income Countries?" (ICPSR 246197)
The dark side of bank branch closures - Replication .dta and .do (ICPSR 251677)
Do Latino and White Parents Interpret the Behavioral Concerns Scale of the DECA-P2 in Similar Ways: Assessing Dimensionality and Measurement Invariance (ICPSR 251665)
Grand Theory of Everything.(Hamzah Information). (ICPSR 251675)
Social Control and the Dispersion of Beliefs (ICPSR 251676)
Spatial Distribution of State Capacity in Historical China, 200 BCE - 1900 CE (ICPSR 309570)
This study examines how demand for public goods shaped state-building in historical China. The dataset is a grid-cell–by-century panel dataset covering historical China from roughly the 2nd century BCE to the 19th century CE. Each observation is a ~1,000 km² grid cell (id_grid) in a given century (id_century). It combines multiple measures of state capacity (e.g., administrative center density, tax revenue, length of roads, number of post stations), potential drivers of state building (e.g., proximity to foreign-war frontline, proximity to the Yellow River, population density, distance to capital, and trade routes), and measures of local institutions (e.g., lineages, Buddhist temples, and ethnic-minority leadership). The dataset enables a quantitative analysis of the evolution of the state-locality relationship over time.
2022 National Health Interview Survey (NHIS) (ICPSR 251660)
2021 National Health Interview Survey (NHIS) (ICPSR 251661)
Recovery before Jobs: Unemployment, Vacancies, and the State in Interwar Czechoslovakia, 1926–38 (ICPSR 251036)
Kinship, Nuptiality and Child Outcomes in Kenya (JAMO) (ICPSR 251508)
Reconstructing Educational Opportunity from Historical Sources: A Methodological Framework for Measuring Institutional Accessibility (ICPSR 251654)
The Price of Credibility: Central-Bank Law, Monetary Defence, and Domestic Contraction in Interwar Czechoslovakia (ICPSR 251656)
Representation of Drug Addiction in Pakistani Print Media: A Latent Dirichlet Allocation Analysis (ICPSR 251657)
Ecology of Resilience: Examining Impacts of Service Engagement, Facility Safety, and Trauma History on Positive Life Trajectories in Justice-Involved Youth, Arizona and Pennsylvania, 2000-2010 (ICPSR 39894)
Guided by dynamic and ecological conceptualizations of long-term resilience, this study examined whether psychosocial services delivered within juvenile residential facilities (RFs) were successful in promoting positive youth trajectories following release, whether facility violence, and, alternatively, staff connectedness influenced the effectiveness of services, and whether effects were further qualified by youth trauma history. Data for the project were drawn from the Pathways to Desistance study, which followed a large sample of juvenile offenders over seven years. A subset of 667 participants who completed release interviews following an RF stay and completed follow-up interviews were included in this study.
This collection includes the syntax files used to clean and analyze the Pathways to Desistance study Subject Measures and Release Measures data. More information about these collections and how to access these data is available on their study pages.
Lead by Example: The Effects of Police Supervisors on Officer Behavior, Dallas, Texas, 2014-2019 (ICPSR 39416)
Midlife in the United States: Core Sample Mortality Data, 1995-2025 (ICPSR 37237)
In 1995-1996, the MacArthur Midlife Research Network carried out a national survey of over 7,000 Americans aged 25 to 74 (ICPSR 2760). The purpose of the study was to investigate the role of behavioral, psychological, and social factors in understanding age-related differences in physical and mental health.
With support from the National Institute on Aging, an initial follow-up of the original Midlife Development in the United States (MIDUS) samples was conducted in 2004 (MIDUS 2). The daily stress and cognitive functioning projects were repeated at MIDUS 2; in addition the protocol was expanded to include biomarkers and neuroscience. In 2005, a baseline sample of 592 African Americans from Milwaukee was added to MIDUS to examine health issues in minority populations.
In 2013, a third wave (MIDUS 3) of survey data was collected on longitudinal participants. Data collection for this follow-up wave largely repeated baseline assessments (e.g., phone interview and extensive self-administered questionnaire), with additional questions in selected areas (e.g., economic recession experiences, optimism and coping, stressful life events, and caregiving). A third wave of cognitive functioning data and a second wave of the Milwaukee sample were also collected. Data collection for the daily diary, biomarkers, and neuroscience is ongoing. This dataset includes mortality information for all known MIDUS decedents (N=2,822) from the Core National and Milwaukee samples as of December 2025.