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Table 1 Overview of the main characteristics of the five cohorts included in EPOSA

From: European Project on Osteoarthritis (EPOSA): methodological challenges in harmonization of existing data from five European population-based cohorts on aging

  ActiFE ProVA LASA Peñagrande HCS
Country Germany Italy Netherlands Spain UK
Region Ulm Camposampiero, Rovigo Amsterdam, Zwolle, Oss Peñagrande (Madrid) Hertfordshire
Baseline year 2009 1995-1997 1992-1993 2007-2008 1999-2004
Number of follow-up cycles 0 2 5 0 2
Year of last follow-up cycle - 2002-2004 2008 - 2007
Sample size at baseline 1506 3099 3107 814 3225
Recruitment criteria Random selection from municipality registries, aged 65 years and older, stratified for age and sex Random selection from health district registries, aged 65 years and older, stratified for age and sex Random selection from municipality registries stratified for age, sex and 5 years mortality rate Random selection from municipality registries stratified for age and sex Participants were born during 1931-1939 in Hertfordshire, and still lived there during 1998-2003
Baseline age-range (years) 65+ 65+ 55-85 65+ 60-72
Baseline age (years, mean (SD)) 74.7 (6.5) 76.4 (7.8) 70.8 (8.8) 77 (7.6) 67.4 (1.9)
Sex (% female) 43.5 59.9 57.6 51,5 47.3
Education (% secondary education or higher) 20.4 11.8 61.1 19.8 5.2
Marital status (% married) 65.2 50.0 53.3 63.4 77.8
  1. ActiFE: study on Activity and Function in the Elderly in Ulm, ProVA: Progetto Veneto Anziani study, LASA: Longitudinal Aging Study Amsterdam, Peñagrande: Ageing in Peñagrande, HCS: Hertfordshire Cohort Study.