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Ghasemzadeh H, Akbari Kamrani A, Abolfathi Momtaz Y, Rassafiani M, Nourhashemi F, Sahaf R. Medical Risk Factors for Dementia; A Case-Control Study. Iranian Rehabilitation Journal 2019; 17 (4) :377-384
URL: http://irj.uswr.ac.ir/article-1-993-fa.html

Objectives: Dementia is the fifth cause of death in older adults with the most significant financial, social, and caring burden on health systems across the world. The aim of this study was to determine the most common medical risk factors for dementia in the retired population.
Methods: A case-control methodology was used for this study, within which 180 patients with dementia were compared to 371 controls for medical risk factors in the National Iranian Oil Company (NIOC) in 2017. Participants in the case and control groups were matched in terms of age, educational level, and sex. The logistic regression was employed to estimate Odds Ratios (OR), using SPSS software.
Results: The majority of the participants were male (55%) and married (69%) with a mean age of 73.14 (SD=9.11) and high school education (38%). The results of the adjusted logistic regression showed a significant association among dementia and chronic and acute vitamin D3 deficiency (more and less than 1 year) (OR=4.73, P<0.001, OR=7.50, P<0.001, respectively), cancer history (OR=15.31, P<0.001), and chronic anemia (OR=5.95, P<0.001).
Discussion: The results of this study suggest vitamin D3 deficiency, cancer, and anemia history as probable risk factors for dementia. Thus, managing or controlling these risk factors may effectively delay or prevent the onset of dementia for the individuals.