The association of long working hours and short sleep duration on mental health among Japanese physicians.

This cross-sectional study investigates the association between long working hours, short sleep duration, and mental health among Japanese physicians. We enrolled 232 Japanese physicians. We used the Brief Job Stress Questionnaire to assess high-stress status, and the Japanese version of the Center for Epidemiologic Studies Depression scale to assess depressive status.

Validation of the diagnostic utility of D-dimer measurement in patients with acute aortic syndrome.

Objective: The objective of this study was to evaluate the validity of D-dimer measurements for the diagnosis of acute aortic syndrome in patients admitted to hospital with acute chest pain.

Methods: A retrospective observational study design was used. Consecutive patients ( n=887) admitted to a tertiary hospital with acute chest pain (acute aortic syndrome, 123; acute pulmonary embolism, 29; and other disease, 735) from the emergency department between January 2011 and April 2014 were assessed to validate the diagnostic value of D-dimer measurements.