Journal of research in health sciences最新文献

Background: Identification of the predictors of coronavirus disease 2019 (COVID-19)-related death in hemodialysis patients plays a key role in the management of these patients. In this regard, the present study aimed to evaluate the predictors of death among COVID-19 infected hemodialysis patients in Hamadan province, Iran.

Study design: A cross-sectional study.

Methods: This cross-sectional study investigated 50 COVID-19 infected hemodialysis patients who were confirmed by polymerase chain reaction (PCR) test and referred to hemodialysis wards of hospitals located in Hamadan province, Iran, from March 2019 and January 2020. In order to compare the demographic characteristics and clinical variables between survived and deceased patients, the independent student t test and chi-square test were applied.

Results: Out of 50 confirmed COVID-19 hemodialysis patients, 27 (54%) cases were male, 38 (76%) subjects were urban residents, and 4 (8%) individuals were smokers. A significant relationship was observed between patients' gender, age, acute respiratory distress syndrome (ARDS) status, and body mass index (BMI) with the treatment outcome (P < 0.05). A significantly higher level of serum albumin was observed in the survived patients (3.49 ± 0.37 vs. 3.17 ± 0.42, P =  0.030). Moreover, in terms of lactate dehydrogenase (LDH) level, a significantly higher level of LDH was observed in the patients who died (1471.1 ± 1484.89 vs. 670.86 ± 268.85, P =  0.005).

Conclusions: It can be concluded that some demographic characteristics of the patients, including age, gender, ARDS status, BMI, co-morbidities, and laboratory signs and symptoms are associated with disease outcomes in COVID-19 infected hemodialysis patients. Therefore, awareness about the predictors of death in these patients can help make better and direct clinical decisions and inform health officials about the risk of COVID-19 mortality among hemodialysis patients.

Background: Ethiopia is ranked as the fifth of heavy under-five death burdened countries with the highest burden in its rural areas. This study aimed to identify the determinants of under-five deaths in rural parts of Ethiopia.

Study design: A population-based cross-sectional study.

Methods: The data for this study was extracted from the 2016 Ethiopian Demographic and Health Survey. Descriptive analysis, non-parametric estimation, and Cox proportional hazards regression model were used to examine the determinants of under-five mortality.

Results: A total of 7301 under-five eligible children from rural areas were involved in this survey, and 6.5% of the cases were passed away before reaching their fifth birthday. Male children's death accounted for 59.7% of the death rate in the participants. An estimated median survival time was 31 months [95% CI: 30-32]. About 83% of children's death occurred among children delivered at home. Cox proportional hazard regression model revealed that gender, delivery-place, family-size, mother's education, number of children, contraceptive use, and source of drinking water had significant effects on survival time of under-five children. Under-five mortality was significantly fewer in female children (HR  =  0.728; 95% CI: 0.606-0.875, P =  0.001), children delivered at health facilities (HR  =  0.738; 95% CI: 0.572-0.951, P =  0.019), and those from secondary and above educated mothers (HR  =  0.464; 95% CI: 0.301-0.714, P =  0.001), compared to the reference category.

Conclusion: Significant risk factors were associated with under-five mortality in rural areas. Delivering in health facilities, uses of contraceptives, mother's education, and improvement of infrastructures should be areas of concern to decrease under-five children's deaths.

Background: Bullying is one widespread violence type that threatens adolescent's well-being in family, school, and neighborhood. This study aimed to estimate the percentages of the last 12 months bullying behaviors- types among Greek adolescents, and to identify the associations between these behaviors and adolescents' aggression and mental health- behavioral problems.

Study design: A cross-sectional study.

Methods: The sample consisted of 1934 adolescents, attending the second grade of 45 randomly selected public and private high schools and senior high schools, of the Greater Athens Metropolitan Area. Bullying involvement was examined by four questions, evaluating the occurrence and type of bullying. The Buss and Perry Questionnaire and Strength and Difficulties Questionnaire were administrated in order to estimate adolescents' aggression and mental health-behavioral problems, respectively. Information about adolescents' individual and family characteristics was also collected.

Results: Overall, 18.4% of participants reported bullying involvement at school, as a victim (11.0%), a bully (5.0%), or both (2.4%), while verbal bullying was the most common type. Compared to uninvolved participants, victims were significantly more likely to report emotional symptoms and peer problems, bullies were more likely to report physical aggression, and bully-victims physical aggression, hostility, and lower prosocial behavior.

Conclusions: Approximately one out of five adolescents were involved in bullying in the past year at school, reporting aggressive behaviors, emotional problems, and/or social difficulties. Further longitudinal research would increase understanding of the mechanisms of bullying involvement and may lead to preventative interventions promoting positive peer interactions in schools.

Background: Food and beverage advertisements on television play a significant role in food preferences, especially among children and adolescents. This study aimed to evaluate foods and beverages advertised on television and purchased by adolescents or their families using the World Health Organization (WHO) nutrient profiling model.

Study design: A cross-sectional study.

Methods: This cross-sectional study was performed on 2,699 students (1380 males and 1319 females) aged 11-16 in Ankara, Turkey, in 2015. Socio-demographic characteristics, television-viewing habits, and the tendency to purchase foods and beverages under the influence of TV advertisements were recorded. The body weight and height were measured by the researchers. All reported food and beverage items (n  =  284) were evaluated and classified as permitted or not permitted to advertise, according to the WHO nutrient profile model (2015).

Results: The majority (69.8%) of students were underweight/normal weight, whereas 13.3% and 16.9% were classified as overweight and obese, respectively. A total of 69.6% of adolescents declared that they were influenced by food advertisements, and 66.4% bought those foods. The most purchased products included cakes and sweet biscuits (63.8%), chocolate and confectionery (44.9%), savory snacks (39.6%), and soft drinks (25.4%). Only 8.5% of all the advertised products (n  =  284) were permitted to be advertised, according to the WHO nutrient profile model (2015). Dairy products, meat products, grains, fruits and vegetables, soup, and some traditional Turkish foods (e.g., cig kofte and Turkish pizza) were permitted. The permitted products were preferred by only 13.6% of the adolescents.

Conclusions: Unhealthy foods are advertised on television for adolescents, and food advertisement management may be an essential strategy to provide healthy food choices.

Background: The suicide incident has had an increasing trend in Iran over the past years. This study mainly aimed to investigate and visualize the spatial variations of registered suicide cases at the province level. A two-step modeling approach was employed in order to estimate the relative risks (RRs) and model the age of fatal suicide across provinces in Iran.

Study design: An applied ecological study.

Methods: This study used the suicide death data recorded by the Iranian forensic medicine organization from March 21, 2016, to March 20, 2018. Furthermore, a Bayesian spatial approach - Besag, York, and Mollie (BYM) model- was applied to estimate the RR of suicide across provinces in Iran.

Results: This risk was found to be significantly higher than the average in both men and women in the west of Iran. For women, higher population density (mean: 0.003; 95% CrI: 0.001-0.005) and lower urbanization rate of provinces (mean: -0.025; 95% CrI: -0.038, -0.012) were associated with increased RR of suicide. Based on the log-normal model fitted to the data, the overall mean age of the fatal suicide at the national level was 34 years.

Conclusions: The magnitude of gender and age differences was quantified, and many spatial variations were identified in suicide mortality across provinces in Iran. Given the heterogeneity in suicide mortality risk among different subgroups of age and gender, our findings point to the urgent need in developing gender- and age-specific suicide prevention strategies. Moreover, efficient allocation of healthcare resources for suicide prevention can be attained by targeting provinces with higher risk.

Background: Road Traffic Injuries (RTIs) are the important causes of unintentional injuries and deaths. In this respect, seat belt wearing is an influential factor in reducing the mortality and severity of road traffic injuries. The rate of seat belt use among is lower adolescents, compared to adults. The present study aimed to investigate the influential factors on seat belt-weraing behavior among adolescent students as car occupants based on the Theory of Planned Behavior (TPB).

Study design:   A cross-sectional design.

Methods: This study was conducted among 952 adolescent students studying in grades 7, 8, and 9 in the schools of Tabriz, Iran, in the 2019-20 academic year. A researcher-made questionnaire was designed based on TPB for data collection, the validity and reliability of which have been confirmed.

Results: The results indicated that the rate of seat belt use in the front seat inside the city was lower than that outside the city. Regarding TPB constructs, perceived behavioral control (β=0.137; 95% CI: 0.006-0.013; P<0.001), subjective norm (β=0.313; 95% CI: 0.021-0.032; P<0.001), and attitude (β=0.322; 95% CI: 0.034-0.053; P<0.001) had a significant and positive relationship with the intention of seat belt-wearing behavior. Moreover, the behavioral intention (β=0.571; 95% CI: 0.62-0.64; P<0.001) had a significantly positive relationship with seat belt-wearing behavior.

Conclusion: The Theory of Planned Behavior is appropriate to determine predictor factors of seat belt-weraing behavior among adolescent students as car occupants. In addition, the results of the present study may provide a theoretical basis for policy-making to improve adolescent students' seat belt use.

Background: The development of preventive measures and promotion of healthcare delivery systems for disease management is dependent on detecting the incidence rates of the diseases and important risk factors. The current study aimed to determine some epidemiological indices and trends of the human brucellosis incidence in Iran between 2009 and 2017.

Study design: A descriptive cross-sectional study.

Methods: In the current study, online data were gathered from all cases of brucellosis who were potentially or definitely diagnosed and registered in medical centers, hospitals, laboratories, and private clinics in all districts of Iran. Epidemiologic questionnaires were used to collect data on demographic and background characteristics, risk factors, high-risk behaviors, and lab test results, respectively, based on the national brucellosis control plan.

Results: A total of 138,448 cases of brucellosis have been studied in Iran from 2009 to 2017. The highest (25.89) and the lowest (12.07) incidence rates were observed in 2014 and 2009, respectively. In this nine-year study, the highest incidences were reported in the Hamedan, Lorestan, Kordestan, and Kermanshah provinces. The cumulative percentages of the disease were estimated for different variables at the following rates: by gender: 57.9% for males; by age groups: 36.2% and 16.7% for the 25-44 and16-24 years age groups, respectively; by occupation: 33.2% for housewives; and by residential area: 75.7% for rural residents.

Conclusions: Based on the obtained results, although the incidence of human brucellosis in Iran has declined since 2015, the number of cases has remained high.