Tobacco smoking and risk for dementia: evidence from the 10/66 population-based longitudinal study.

This study aimed to estimate the association between tobacco smoking and risk for dementia in seven low- and middle-income countries. Secondary analysis of the 10/66 population-based cohort study was conducted with 11,143 dementia-free individuals aged 65 years and older who were followed-up for an average of 3.8 years totalling 42,715 person-years.

Depressive symptoms and harmful alcohol use in hepatitis C patients: prevalence and correlates.

Introduction: It is important to understand the characteristics and vulnerabilities of people who have hepatitis C because this disease is currently an important public health problem. The objective of this study was to estimate the prevalence of depressive symptoms and harmful alcohol use in patients with hepatitis C and to study the association between these outcomes and demographic, psychosocial and clinical variables.

Methods: This cross-sectional, descriptive and analytical study involved 82 hepatitis C patients who were being treated with pegylated interferon and ribavirin at a public university hospital.