background: although the cox proportional hazard regression is the most popular model for analyzing the prognostic factors on survival of cancer patients, under certain circumstances, parametric models estimate the parameter more efficiently than the cox model.  the aim of this study was to compare the cox regression model  with parametric models in patients with gastric cancer who registered a...

conclusions serum t4 and tsh levels in depressive patients were found to be significantly higher than those of the control group, indicating the association between serum t4 and tsh levels and depression in the subjects in 2010 - 2011 in hamedan, northwestern iran. objectives in this study, the serum levels of t3, t4, and tsh in patients with major depressive disorder have been compared to the ...

conclusions age, injury severity, injured body region, and hospital-acquired infections are important determinants of trauma outcome in our center. timely recognition of factors affecting trauma mortality is crucial for monitoring changes of trauma quality of care. our findings suggest the need to allocate resources for trauma prevention along with a potential focus on reducing in-hospital comp...