REP Population Overview
The REP links medical records across several providers in Minnesota and Wisconsin to identify unique persons (i.e., a records-linkage system). In particularly, the REP indexes the medical records of virtually all persons who have resided in Olmsted County, Minnesota from 1 Jan 1966 to present. The REP includes 2,305,154 medical records from more than 60 different health care providers linked to 620,013 persons who lived in Olmsted County at some time from 1 Jan 1966 through 31 Dec 2020.
Beginning in 2014, the REP also includes information for persons living in an expanded 27-County region in Southern Minnesota and Western Wisconsin. The enumeration for the additional counties (Olmsted County plus 26 other counties) is provided from 1 Jan 2010 to present. The expanded REP includes 2,727,802 medical records linked to 1,295,694 persons who lived in the 27-County region at some time from 1 Jan 2010 through 31 Dec 2020 (updated Sep 2021).
Data below are organized into two sections: 1) Information from the REP Census, and 2) Information from the US Decennial Censuses. Within each section, data are further organized into a) Olmsted County and b) the Expanded 27-County REP Region (including Olmsted County):
| REP Census Data (Updated Sep 2021) | |
| a. Olmsted County | |
| Population on 1 Jan for years 2000, 2010, and 2019 separate by sex, age (4 groups), and race | XLSX |
| Population on 1 Jul for years 1966-2020, by sex and age (single year) | XLSX |
| b. Expanded 27-County Region | |
| 27-County coverage, REP vs. US Census on 1 Jul 2019, separate by county and sex | PNG |
| REP Census coverage by county, sex, and age from 2000-2019 (52 pages, Tables and Maps) | |
| 27-County population on 1 Jan for years 2010 and 2019, separate by county, sex, and age (4 groups) | XLSX |
| 27-County population on 1 Jan for year 2019, separate by county, sex, and race | XLSX |
| Expansion of the Rochester Epidemiology Project (Rocca, et al., Int J Epidemiol. 2018) | PubMed |
| US Census Data | |
| a. Olmsted County | |
| Olmsted County compared to Upper Midwest and entire US (1970-2010 US Decennial Census Data) | |
| Olmsted County vs. State of Minnesota, US Census Bureau QuickFacts | Link |
| Generalizability of Epidemiological Findings and Public Health Decisions (St. Sauver, et al., 2012) | PubMed |
| b. Expanded 27-County Region | |
| US Census Population for the 27-County Region, years 2010-2018, separate by county and sex | XLSX |
| Expansion of the Rochester Epidemiology Project (Rocca, et al., Int J Epidemiol. 2018) | PubMed |
REP population coverage (27-county Region, 1 Jul 2019)
