Figure 1.

Adjusted CKD stages 1–5 prevalence in the population aged 45–74 years, in IDMS studies. Prevalence was age- and sex-adjusted to the EU27 population of 2005. The study names in uncolored regions are studies which used non–IDMS-standardized creatinine or studies which recruited subjects aged ≥50 years: the CKD prevalence results of these studies are shown in Supplemental Appendix 1. 3C, Three City Study; ActiFE, Activity and Function in the Elderly in Ulm study; EPIRCE, Estudio Epidemiológico de la Insuficiencia Renal en España; HUNT, Nord-Trøndelag Health Study; INCIPE, Initiative on Nephropathy, of relevance to public health, which is Chronic, possibly in its Initial stages, and carries a Potential risk of major clinical Endpoints; LifeLines, LifeLines Cohort and Study Biobank; MRC, Medical Research Council trial of assessment and management of older people in the community; PolSenior, Medical, psychological, sociological and economical aspects of aging of people in Poland; PREVEND, Prevention of Renal and Vascular End-stage Disease; SLAN, Survey of Lifestyle and Attitudes & Nutrition in Ireland.