Background:Problematic internet use is on the increase and has caused serious problems in many areas. This issue seems to be more important for medical students.Objectives:This study was designed to explore the prevalence of internet addiction and its related factors among the students of Mashhad University of Medical Sciences.Materials and Methods:A cross sectional study was conducted on 383 medical students of Mashhad in 2013. Four hundred participants were selected through two-stage stratified sampling method proportional to the number of students in each stage of education. Data Collection was done through using the Chen Internet Addiction Scale (CIAS) and a checklist of demographic details and characteristics of internet usage behavior.Results:It was found that 2.1% of the studied population were at risk and 5.2% were addicted users. Chatting with new people, communicating with friends and families, and playing games were the most popular activities in these groups. The factors related to internet addiction included: male sex, stage of education, daily time spent on using internet, most frequent time of internet use, monthly cost of use, and tea consumption.Conclusions:Although our study showed the prevalence of internet addiction was not more than other populations and universities, since the prevalence of internet addiction is rapidly increasing worldwide, this population might also be at risk of addiction. Thus, focusing on related factors can help us in designing more effective interventions and treatments for this susceptible group.

Background: The present study aimed to assess the effects of Ramadan intermittent fasting on body weight and composition and the effects of age and sex. Methods: Body weight, height, waist and hip circumferences were measured, body mass index (BMI) was calculated and fat mass, fat-free mass and percentage body fat were assessed by bioelectrical impedance on 240 adult subjects (male: 158) who fasted between sunrise and sunset for at least 20 days. Measurements were taken 1 week before and 1 week after Ramadan. Energy and macronutrient intakes were assessed using a 3-day food frequency questionnaire on a sub-sample of subjects before and during Ramadan. Results: Subjects were grouped according to age and sex:35 years (n = 82, males: 31) and 36-70 years (n = 158, males: 127). There were significant reductions in weight and BMI (P < 0.001) in almost all subjects, with the biggest being in males 35 years [À2.2% (SE 2.2%), P < 0.001]. Waist and hip circumferences fell in most subjects, except females aged 36-70 years. Fat mass fell in most subjects, ranging from 2.3% to 4.3% from baseline, except in females aged 36-70 years who did not experience a significant change. Fat-free mass was significantly reduced in all subjects (P < 0.001), whereas percentage body fat was lower only in males by 2.5% (SE 3.2%) (P = 0.029) in those aged 35 years and by 1.1% (SE 1.5%) (P < 0.001) in those aged 36-70 years. Dietary intake was similar before and during Ramadan, except in males whose protein intake fell during Ramadan (P = 0.032). Conclusions: Ramadan fasting leads to weight loss and fat-free mass reductions. Body composition changes vary depending on age and sex.

There are unresolved questions regarding the association between persistent leukocytosis and risk of thrombosis and disease evolution in polycythemia vera (PV), as much of the published literature on the topic does not appropriately use repeated-measures data or time-dependent modeling to answer these questions. To address this knowledge gap, we analyzed a retrospective database of 520 PV patients seen at 10 academic institutions across the United States. Taking hematologic laboratory data at ∼3-month intervals (or as available) for all patients for duration of follow-up, we used group-based trajectory modeling to identify latent clusters of patients who follow distinct trajectories with regard to their leukocyte, hematocrit, and platelet counts over time. We then tested the association between trajectory membership and hazard of 2 major outcomes: thrombosis and disease evolution to myelofibrosis, myelodysplastic syndrome, or acute myeloid leukemia. Controlling for relevant covariates, we found that persistently elevated leukocyte trajectories were not associated with the hazard of a thrombotic event (P = .4163), but were significantly associated with increased hazard of disease evolution in an ascending stepwise manner (overall P = .0002). In addition, we found that neither hematocrit nor platelet count was significantly associated with the hazard of thrombosis or disease evolution.

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Malnutrition remains common but unrecognized and untreated problem worldwide particularly in Iranian hospitals. Malnutrition has a high clinical and economic impact reflected by an increased morbidity and mortality and prolonged hospital stay. The main aim of this study was to assess the nutritional state of patients on admission to four University-affiliated hospitals including two general, one oncology and one psychiatric) in Mashhad using of Malnutrition Universal Screening Tool (MUST). 404 adults aged more than 18 who were admitted to the Mashhad teaching hospitals were screened for malnutrition using MUST. The mean age was 44 ± 18 years (range 18-90 years) (188 females, 216 males). The nutritional status assessment was performed within 48 h of admission and the prevalence of malnutrition was reported 48.5%. (high risk 38.6%, medium risk 9.9%). In total, 45.2% (n = 70) of female patients had a MUST score of 2 (high risk) when compared with 51.5% (n = 35) of males. Mental disorder patients (82%) and medical ward patients (60.6%) had the highest prevalence of malnutrition. Results showed that malnutrition is a common problem affecting more than 48% of patients in this hospital-wide study. Results warrant paying more attention to malnourished patients.