Study design and participants
endocrine diseases
ENDOCRINE DISEASES, POLAND
The study included participants of the Bialystok PLUS Study, who were 50–80 years of age. The Bialystok PLUS Study was a prospective, population-based, cohort study in which the determinants and occurrence of cardiovascular, neurological, ophthalmic, psychiatric, musculoskeletal, and endocrine diseases were analyzed among residents of the city of Bialystok (Northeastern Poland). It had a fully randomized design. The aims, methodology, and protocol of the study have been described in detail elsewhere [