TABLE 1

The levels of urinary albumin excretion rate for each 2-year study period

StatusEvaluation periodFollow-up period
FirstSecondThird
Overt proteinuria20 (9)22 (13)21 (19)
Microalbuminuria216 (100)147 (69)92 (54)66 (58)
Normoalbuminuria48 (22)55 (33)26 (23)
Total216 (100)215 (100)169 (100)113 (100)
  • Data are n (%). Evaluation period was the first 2-year period during which microalbuminuria was present. Microalbuminuria was present initially in 179 patients (the prevalence cohort) and developed later in another 37 patients during the first or second follow-up period (the incidence cohort). In the incidence cohort, the initial evaluation period took place after 2 years in 24 subjects and after 4 years in 13 subjects.