It is unknown whether the waist circumference (WC) or the waist-to-hip ratio (WHR) is a better predictor of cardiovascular risk factors at different ages. To compare WC and WHR as predictors of cardiovascular risk factors and to determine... more
It is unknown whether the waist circumference (WC) or the waist-to-hip ratio (WHR) is a better predictor of cardiovascular risk factors at different ages. To compare WC and WHR as predictors of cardiovascular risk factors and to determine the prevalence of some cardiovascular risk factors in overweight and obese adult women at different ages. In this clinical cross-sectional study, 714 overweight and obese women aged 20 to 70 years who were referred to two nutrition clinics in Sistan and Baluchestan province, Islamic Republic of Iran, were studied. The subjects were classified into three groups, 20 to < 35, 35 to < 50, and > or = 50 years of age. Anthropometric indices were measured according to the standard protocol. Total cholesterol (TC), triglycerides (TG), high-density lipoprotein cholesterol (HDL-C), and TC/HDL-C ratios were enzymatically determined. Older subjects (> or = 50 years old) had significantly higher values of body mass index (BMI), WC, TC, TG, and LDL-C...
INTRODUCTION: Shigella spp. are Gram-negative, nonsporulating, rod-shaped bacteria that belong to the family Enterobacteriaceae and are responsible for shigellosis or bacillary dysentery, an important cause of worldwide morbidity and... more
INTRODUCTION: Shigella spp. are Gram-negative, nonsporulating, rod-shaped bacteria that belong to the family Enterobacteriaceae and are responsible for shigellosis or bacillary dysentery, an important cause of worldwide morbidity and mortality. METHODS: We studied the antibiotic resistance profiles of 122 Shigella spp. strains (81 S. flexneri, 41 S. sonnei, 1 S. boydii) isolated from patients (female and male from 0 to 80 years of age) presenting diarrhea in different districts of the State of Pará, in the North of Brazil. The antibiotic resistance of the strains, isolated from human fecal samples, was determined by the diffusion disk method and by using the VITEK-2 system. RESULTS: The highest resistance rate found was the resistance rate to tetracycline (93.8%), followed by the resistance rate to chloramphenicol (63.9%) and to trimethoprim/sulfamethoxazole (63.1%). Resistance to at least three drugs was more common among S. flexneri than S. sonnei (39.5% vs. 10%). Six (4.9%) strai...
To examine factors influencing the academic performance of students at Tehran University of Medical Sciences. The retrospective cross-sectional study was conducted between 2008 and 2009 at the Tehran University of Medical Sciences, Iran.... more
To examine factors influencing the academic performance of students at Tehran University of Medical Sciences. The retrospective cross-sectional study was conducted between 2008 and 2009 at the Tehran University of Medical Sciences, Iran. Data was obtained from the education office of the university and SPSS version 15 was used for data analysis. Of the 670 students in the study, 230 (34.3%) were boys and 440 (65.6%) were girls.The highest mean score of courses belonged to the Psychiatry Institute (18.68) and the lowest was in the School of Medicine (15.20). Twenty nine per cent of students had failed course and 8.4% had failed semester. The variables gender, level of education, and school are the most important factors affecting the educational progress of students. Overall, students' failure ratios varied significantly between schools and educational levels.
Background: The pre-internship (PI) exam is the most important examination of medical students which can assess their abilities in passing the general medicine. Objective: To determine the effective factors on the pre-internship score and... more
Background: The pre-internship (PI) exam is the most important examination of medical students which can assess their abilities in passing the general medicine. Objective: To determine the effective factors on the pre-internship score and result at Zahedan University of Medical Sciences. Methods: The research was a cross-sectional on 63 medical students participating in pre-internship examinations in Zahedan University of Medical Sciences in 2000. The mean scores of basic sciences, physiopathology, clinical, total and the scores of ten important courses of pre-internship exam and the demographic variables were recorded and analyzed. Results: The failing rate was 20.4%, the relative risks of failing were 3.6, 3.7, 6.1, 10.9 and 11.6 for the students with non-district group in quota system, high age, more than 5.5 year education period (to pre-internship), with clinical score mean and total mean lower than the mean of all participants, respectively and it was significant. Also, the me...
