Overton M, et al. - According to several criteria in a population-based sample, researchers reported on the prevalence and incidence of mild cognitive impairment (MCI) across age, sex, and subtypes. The sample was taken from the population study of Swedish Good Aging in Skåne and data from 3,752 participants aged 60 and older were used to calculate the prevalence of MCI. The incidence was calculated using 2,093 candidates with data from 6 years of follow-up. Depending on age and severity of impairment, the prevalence estimates ranged from 5.13 to 29.9%. The overall incidence rates of MCI for less severe and severe cognitive impairment were 22.6 and 8.67 per 1,000 person-years respectively. For “non-amnestic MCI single domain,” the highest prevalence and incidence estimates were found. The older age groups had a higher prevalence and no gender or age differences were detected in the incidence of MCI. The results are in line with prior studies arguing that MCI is a heterogeneous notion, as the prevalence and incidence estimates differed significantly depending on age, MCI subtype, and severity of cognitive impairment.