| ORIGINAL ARTICLE |
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| Year : 2022 | Volume
: 18
| Issue : 2 | Page : 78-85 |
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Association of cognitive function, depression, and quality of sleep with statins among oldest-old individuals
Sai Sruthi Regalla1, Gunampalli Anaika1, Bana Manishaa Reddy1, Pawan Kumar Sharma2, Enakshi Ganguly2
1 Department of Community Medicine, Mediciti Institute of Medical Sciences, Hyderabad, Telangana, India
2 Department of Community Medicine, Mediciti Institute of Medical Sciences, Hyderabad, Telangana, India; Department of Epidemiology, University of Pittsburgh, PA, USA, and SHARE India, and Fogarty International, NIH, USA
Correspondence Address:
Enakshi Ganguly
Department of Community Medicine, Mediciti Institute of Medical Sciences, Ghanpur, Hyderabad - 501 401, Telangana
 Source of Support: None, Conflict of Interest: None
DOI: 10.4103/jiag.jiag_34_21
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Background: Oldest-old population is rapidly increasing in all countries, with many prescribed statin therapy. Statins are associated with multiple cardiovascular benefits at various ages. The benefits of statins above the age of 75 are being questioned. The objective of this study was to measure statins use among the oldest-old population, aged 80 years and above, and to study the effect of statins on cognitive function, depression, and quality of sleep. Materials and Methods: This cross-sectional study randomly enrolled 200 community-dwelling individuals aged >80 years. Data were collected upon home visits on sociodemographic, cognitive functions, depression, sleep, chronic diseases, functional limitations, and disabilities. Cognitive function (Mini Mental State Examination), depression (Geriatric Depression Scale), and quality of sleep (Pittsburgh Sleep Quality Index) among individuals using statins versus not using statins were compared. Chi-square test and t-test were done; odds ratios (ORs) with 95% confidence interval (95% CI) were reported. Logistic regression was done to calculate adjusted OR with age, antidepressants, sedatives, antihistaminics, and sleep medicines. P < 0.05 was considered statistically significant. Results: Overall prevalence of statin use in our study population was 12%; 11.3% in women and 13.2% in men. Cognitive functions, depression, and quality of sleep improved among those using statins (P < 0.05): cognitive impairment – OR: 0.38; 95% CI: 0.16–0.91; depression – OR: 0.41; 95% CI: 0.17–1.02, and poor sleep quality – OR: 0.39; 95% CI: 0.16–0.96. On stratification by gender, men showed a significant association of improved cognitive function and quality of sleep with the use of statins, whereas women did not show any significant associations with cognitive function and quality of sleep but showed almost significant association with improvement in depression. Conclusions: The prevalence of the use of statins was low in our population. Statins had positive effects on cognitive functions, quality of sleep, and depression over 80 years of age in our population, although gender difference exists.
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