The Methods Library section of our Repository provides access to reference papers and reports on approaches and methods used to retrospectively harmonize data and to apply these methods to analyze data. The Harmonization Methods Library is divided into the following two subsections: General Harmonization Guidelines and Approaches and Applied harmonization. The Harmonization Methods Library is developed in collaboration with the Integrative Analysis of Longitudinal Studies on Aging. Please send us references you think could be helpful to contribute to this new resource.

To explore resources authored exclusively by Maelstrom Research members, visit the Maelstrom publications section.


This section provides a list of scientific articles and reports describing general guidelines and approaches used for harmonizing data. These texts were written with the conceptual or theoretical goal to describe or document data harmonization. They range from general information about data harmonization to presentation of specific methods of data harmonization but do not present results of data analysis using harmonized data. Use of harmonized data in these manuscripts is for illustrative purposes only.

Piccinin A, Hofer S
Integrative analysis of longitudinal studies on aging: Collaborative research networks, meta-analysis, and optimizing future studies
Handbook on Cognitive Aging: Interdisciplinary Perspectives. Thousand Oaks: Sage Publications; 2008. 446-76.
Curran PJ, Hussong AM, Cai L, Huang W, Chassin L, Sher KJ, et al
Pooling data from multiple longitudinal studies: the role of item response theory in integrative data analysis
Developmental psychology. 2008;44(2):365-80. Pubmed ID: 18331129
Hoffmeyer-Zlotnik JHP
Harmonisation of Demographic and Socio-Economic Variables in Cross-National Survey Research
Bulletin de méthodologie sociologique. 2008;98:5-24.
van Buuren S, Eyres S, Tennant A, Hopman-Rock M
Improving Comparability of Existing Data by Response Conversion
Journal of Official Statistics. 2005;21(1):53-72.