Longitudinal and Repeated Data Portals

Colectica Portal is built to search and display data documentation for longitudinal and repeated data collections. Variables can be harmonized and linked across study waves, and changes in measurements, coding, and descriptions are encoded using open data documentation standards such as DDI. Questionnaires from multiple waves can be documented, including sections, routing and filter questions, and linked to the data which was collected.

Colectica Portal uses Colectica Repository to store and index the graph of information used to describe these complex studies. For more information, please reach out and contact us.

Midlife in the United States

Midlife in the United States, a National Longitudinal Study of Health and Well-Being.

Midlife in the United States Colectica Portal Midlife in the United States Colectica Portal

http://midus.colectica.org

CLOSER Discovery

CLOSER Discovery is an online resource that enables researchers to search the data from eight leading UK longitudinal studies.

The studies include

Closer Discovery Colectica Portal Closer Discovery Colectica Portal

https://discovery.closer.ac.uk

Statistics New Zealand DataInfo+

DataInfo+ gives users one place to search and browse for information about Statistics New Zealand's statistical activities and data.

Statistics New Zealand DataInfo Colectica Portal Statistics New Zealand DataInfo Colectica Portal

http://datainfoplus.stats.govt.nz

Finnish National Elections Study series

The FNESdata longitudinal survey metadata portal contains the metadata of four surveys in the Finnish National Elections Study series. Studies range from 2003 to 2015.

Finnish National Elections Study Colectica Portal Finnish National Elections Study Colectica Portal

http://www.fsd.uta.fi/fnesdata

The United State's National Health and Aging Trends Study (NHATS) gathers information on a nationally representative sample of Medicare beneficiaries ages 65 and older.

National Health and Aging Trends Study Colectica Portal