objective: suicide is one of the most important early causes of death in psychotic patients. the main object of this research was to determine the relationship between positive and negative symptoms of schizophrenia and psychotic major depressive disorder (mdd) with suicidal history and risk. methods: sixty five patients with schizophrenia compared to 65 patients with psychotic mdd in a cross s...

a bstract background: some health problems are more prevalent in shift workers than day workers. musculoskeletal disorders are considered as one of the most common health-related problems that can cause disability among health care workers. the aim of this study was to assess the associations between shift working and the prevalence of musculoskeletal symptoms (mss) among nursing personnel. mat...

OBJECTIVES Posttraumatic stress disorder (PTSD) results from experiencing or witnessing traumatic, life-threatening events including combat-related experiences. The purpose of this study was to investigate the prevalence of PTSD symptoms and diagnosis, self-reported exposures, and functional health in a large cross-section of the U.S. military. METHODS This study used baseline Millennium Coho...

although researchers in this decade have proposed several answers concerning the association between socio-economic levels of health, still one question is not well understood: whether in school or domestic environments, low and high socio-economic status may influence asthma and respiratory symptoms on primary school students. the aim of this study was to investigate the extent to which primar...