cognitive impairments in parkinson's disease: evidence from an iranian population.

background: patients with parkinson's disease (pd) have different cognitive impairments.the goal of this study is the analysis of these changes in the mentioned patients.a cross-sectional study was performed on 87 patients with pd. patients were given a questionnaire to gather data about their medical and living statuses. to assess cognitive assessment, scopa-cog (scales for outcome in parkinson cognition) was used by an expert cognitive neuroscientist. results: the age inversely correlated to memory and learning (p < 0.01). education level correlated directly to attention, memory, learning, executive function and visuospatial function (for all items p < 0.001). spouse relationship type showed inverse association with memory, learning, executive function and visuospatial function (p < 0.05). conclusion: cognitive domains in pd patients may be under the influence of different factors. due to the lack of control group in this study, cautious interpretation of findings is needed.