Prevalence and Determinants of Depression and Anxiety Symptoms in Surgical Patients.

Objectives: Mood disorders are prevalent in hospitalized patients. However, risk factors for early diagnosis have not been studied exclusively in surgical patients. Our study aimed to investigate the prevalence and determinants of depression and anxiety symptoms in surgical patients.

Trend of smoking among students of Tehran University of Medical Sciences: results from four consecutive surveys from 2006 to 2009.

Background: Smoking within students community of the medical sciences can negatively impact the attitudesof the society in future. The objectives of this study were to assess the prevalence and trends of smoking amongstudents of Tehran University of Medical Sciences.

Method: This study was conducted in four consecutive years from 2006 to 2009.

HIV, hepatitis C virus, and hepatitis B virus co-infections among injecting drug users in Tehran, Iran.

Objectives: To assess the prevalence of HIV, hepatitis B virus (HBV) and hepatitis C virus (HCV) infections and co-infections among injecting drug users (IDUs) in Tehran.

Methods: A sample of 899 IDUs (861 male and 38 female) was recruited in Tehran from treatment and harm reduction facilities and from drug user hangouts in public areas in equal proportions. ELISA testing for HIV, HCV antibody (HCV-Ab), hepatitis B surface antigen (HBsAg), and hepatitis B core antibody (HBcAb) was carried out.