Prospective Cohort Studies

نویسندگان

چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Cohort studies: prospective versus retrospective.

Cohort studies form a suitable study design to assess associations between multiple exposures on the one hand and multiple outcomes on the other hand. They are especially appropriate to study rare exposures or exposures for which randomization is not possible for practical or ethical reasons. Prospective and retrospective cohort studies have higher accuracy and higher efficiency as their respec...

متن کامل

Embryo transfer in days 2 to 4 following intracytoplasmic sperm injection: a prospective cohort study

  Background: Improvement of assisted reproductive technique (ART) results in higher pregnancy rates from positive Beta HCG to take home baby statistics. Despite developments in culture media allowing blastocyst stage transfer, some centers apply second, third and sometimes fourth day post injection for embryo transfer. This study aimed to compare their reproductive outcomes.   Methods : This p...

متن کامل

The relationship between shift work and metabolic syndrome: a prospective cohort study

Background: Metabolic syndromes have been identified as a major risk factor for people with cardiovascular disease. Metabolic syndromes are defined as a range of conditions including waist-fat, abdominal obesity, high blood pressure, diabetes, high triglycerides, and HDL. Considering the importance of controlling metabolic syndrome, the research study subject with the mentioned aim is so import...

متن کامل

Does ethnicity affect survival following colorectal cancer? A prospective, cohort study using Iranian cancer registry

  Background:The present study compared the differences between survivals of patients with colorectal cancer according to their ethnicity adjusted for other predictors of survival.   Methods: In this prospective cohort study patients were followed up from definite diagnosis of colorectal cancer to death. Totally, 2431 person-year follow-ups were undertaken for 1127 colorectal cancer patients on...

متن کامل

Effect of Adenotonsillectomy on Serum Levels of Total Antioxidant-A Prospective Cohort Study

Introduction: Antioxidants are essential elements in reducing the harmful effects of free radicals. The aim of this study was to compare the serum levels of total antioxidant before and after adenotonsillectomy procedure.   Materials and Methods: This study was conducted on 41 children with the age range 3-12 who underwent adenotonsillectomy. The total l...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: European Journal of Vascular and Endovascular Surgery

سال: 2016

ISSN: 1078-5884

DOI: 10.1016/j.ejvs.2015.09.021