Behavioral economics suggests that people do not always decide rationally but are even predictably irrational. This gives rise to the concept of nudge, which creates an architecture of choices that encourages people to behave as they wish. Loss aversion is one of the best-known phenomena in behavioral economics and a central notion of the prospect theory. The main idea behind this phenomenon is that losses hurt more than gains feel good. The framing effect is a bias where people choose some options differently, depending on whether they are presented as a gain or a loss. In this quasi-experimental study, the authors examine the role of loss aversion and framing effects on students' engagement and academic success. This study aims to test the hypothesis that students will have a stronger reaction to the reduction of awarded points, as opposed to an increase of awarded points, as they progress through the course. This will motivate them to work harder and achieve better academic success. The results show significant differences between the two groups in favor of the group being graded using the point reduction grading scheme. This suggests that the power of loss aversion can be exploited to increase students' engagement and academic success. The existence of framing effect in this case has been demonstrated, which shows it might be possible to use the choice architecture to improve the student results.

Introduction: Over the past 15 years, direct oral anticoagulant (DOAC) drugs have replaced vitamin K antagonists in a number of indications requiring oral anticoagulant therapy. Review work: The article written is an overview of the most important information related to the use of DOAC drugs in the secondary prevention of venous thromboembolism (VTE). The first randomized studies with dabigatran, rivaroxaban and apixaban are presented, which introduced these drugs into clinical practice in the first step, and then enabled the prolonged safe use of these drugs in the secondary prevention of VTE. Studies have also been described as current attitudes for the use of DOAC in patients with VTE associated with malignancy and antiphospholipid syndrome. An assessment of the risk of bleeding in patients with DOAC is also presented. Finally, we briefly presented the results of the use of DOAC in the treatment of pulmonary embolism in a group of patients from the regional PE registry.

Background/Aim: Breast-conserving surgery is a type of surgery used as a treatment option for breast cancer. It was introduced at the end of the 20th century following and in accordance with relevant clinical studies. With heightened public awareness of breast cancer and the introduction of new diagnostic procedures, despite the proven oncological safety of this type of surgery, a growing number of women choose to undergo total mastectomy. The aim of this study was to confirm the oncological safety of breast-conserving surgery performed on breast cancer patients at the University Clinical Centre of the Republic of Srpska. Methods: This study analysed 305 female patients with I and II stage of breast cancer, operated on between March 2009 and December 2013. One group of patients underwent breast-conserving surgery (BCS), followed by adjuvant radiation therapy and the other total mastectomy (MX). The patients were followed up for 5 years after the surgery. Analysed herein were the local-regional recurrence, distant metastases, disease-free survival and overall survival rates. Results: After a five-year follow-up, the local-regional recurrence rate for patients in the BCS group was 4.3 %, while for the MX group it was 4.2 %. The overall survival rate of patients in the BCS group was 90.9 %, as opposed to 89.1 % for MX patients. Conclusion: After a five-year follow-up, no statistically significant difference was observed between the two groups of patients regarding the local-regional recurrence (p = 0.967) and overall survival rates (p = 0.610). Breast-conserving surgery is an oncologically safe surgical treatment for breast cancer.

Determining the demographic characteristics of a person post-mortem is a fundamental task for forensic experts, and the dental system is a crucial source of those information. Those characteristics, namely age and sex, can reliably be determined. The mandible and individual teeth survive even the harshest conditions, making them a prime target for forensic analysis. Current methods in forensic odontology rely on time-consuming manual measurements and reference tables, many of which rely on the correct determination of the tooth type. This study thoroughly explores the applicability of deep learning for sex assessment, age estimation, and tooth type determination from x-ray images of individual teeth. A series of models that use state-of-the-art feature extraction architectures and attention have been trained and evaluated. Their hyperparameters have been explored and optimized using a combination of grid and random search, totaling over a thousand experiments and 14076 hours of GPU compute time. Our dataset contains 86495 individual tooth x-ray image samples, with a subset of 7630 images having additional information about tooth alterations. The best-performing models are fine-tuned, the impact of tooth alterations is analyzed, and model performance is compared to current methods in forensic odontology literature. We achieve an accuracy of 76.41% for sex assessment, a median absolute error of 4.94 years for age estimation, and an accuracy of 87.24% to 99.15% for tooth type determination. The constructed models are fully automated and fast, their results are reproducible, and the performance is equal to or better than current state-of-the-art methods in forensic odontology.

Background/Aim: Dehiscence of the colorectal anastomosis is one of the most serious complications in digestive surgery that is still present in a large percentage today, which significantly increases the cost of treatment and can lead to death. Due to all the above, early detection of anastomotic dehiscence is very important, as well as the decision on surgical treatment. Procalcitonin (PCT) is thought to be an important marker of inflammation and sepsis. Aim of this paper was to confirm PCT as a marker of great sensitivity in early diagnosis of anastomotic leakage. Methods: The study included patients who underwent surgery for colorectal cancer in the period from 2016 to 2020. Patients were operated according to an elective protocol and with an open surgical approach. In patients, PCT values were measured on the 2nd and 4th postoperative day (POD) to determine the association between elevated PCT values and the onset of dehiscence of the colorectal anastomosis. Results: A study was conducted in 118 patients in whom a stapler colorectal anastomosis was created. Colorectal anastomosis dehiscence occurred in 10 patients. In 4 patients with dehiscence, no re-surgical intervention was required, but they were taken care of by conservative methods. Repeated surgery was performed in 6 patients. In all patients with dehiscence, there was a multiple increase in the value of PCT above normal. Conclusion: PCT has high sensitivity and specificity (85 and 74 % respectively) as a marker in dehiscence of colorectal anastomosis. In this study it was found that PCT values were significantly correlated with the dehiscence of anastomo-sis 2nd POD and especially 4th POD.

Background/Aim: Hypomagnesaemia is one of the most detected electrolyte abnormalities in diabetics. Modulation of numerous cardiovascular pathophysiological processes is a potential goal for anti-diabetic therapy. Magnesium supplementation prevents subclinical tissue magnesium deficiency, thus delaying the onset of metabolic imbalance in diabetes, but long-term effects of magnesium supplementation in chronic diabetes and numerous pathophysiological processes remain unknown. Aim of this study was to determine the effects of subchronic intake of magnesium hydrocarbonate-rich mineral water on cardiometabolic markers and electrolytes in rats with streptozotocin-induced diabetes. Methods: A total of 28 Wistar, male rats, body weight 160 g at start, were divided into four groups of 7 each: two controls, group that drank tap water and received a single ip injection of saline (0.9 % NaCl) (TW-C), group that drank mineral water rich in magnesium hydrocarbonate and received a single ip injection of saline (0.9 % NaCl) (MW-C); and two experimental groups with streptozotocin-induced diabetes, group that drank tap water and received a single ip injection of streptozotocin (100 mg/kg) in saline (0.9 % NaCl, 1 mL) (TW-DM), group that drank mineral water rich in magnesium hydrocarbonate and received a single ip injection of streptozotocin (100 mg/kg) in saline (0.9 % NaCl, 1 mL) (MW-DM). Results: Regarding the biochemical parameters, a decrease was observed in the MW-C group for vitamin B12 and proteins, while triglycerides were higher compared to the TW-C group. By comparing the haemostatic biomarkers between TW-C and MW-C groups, a statistically significant decrease was found for fibrinogen, while the electrolyte analysis showed an increase in phosphates for the MW-C group. Biochemical value comparison between TW-DM and MWDM groups showed that magnesium hydrocarbonate usage in diabetic rats did not significantly reduce glycaemia although the average glycaemic values were lower in the group treated with magnesium hydrocarbonate. Regarding the electrolyte values, a statistically significant decrease was observed for sodium, potassium and phosphate in the MW-DM group. The MW-DM group also showed a significant increase in iron value compared to TW-DM group. Conclusion: Subchronic intake of magnesium hydrocarbonate-rich mineral water, as a form of magnesium supplementation, did not cause a significant improvement in glycaemia or normalisation of diabetes-induced dyslipidaemia. This study showed the reduction of fibrinogen value, thus indicating the possibility of usage of this form of magnesium supplementation in different pro-thrombogenic conditions.

Background/Aim: Type 2 diabetes is a common comorbidity in patients with knee osteoarthritis. Bearing in mind that obesity and insulin resistance are risk factors for the development of knee osteoarthritis, physical therapy and balneotherapy containing hydrogen sulphide (H2S) has a positive effect on the functional and metabolic status of these patients. This work was aimed to investigate the effect of sulphate-sulphide-rich mineral baths containing H2S on the level of serum glucose in patients with knee osteoarthritis. Methods: An open prospective randomised clinical trial included patients suffering from stage I and II of the knee osteoarthritis. Patients were divided into two groups of 40 subjects each: control group and experimental group. All subjects underwent inpatient physical treatment consisting of kinesitherapy and transcutaneous electrical nerve stimulation (TENS) 6 days a week. Patients from experimental group, in addition to all the mentioned treatments, also took sulphate-sulphide mineral water baths once a day for 30 minutes for 7 days, unlike the patients from control group who took tap water baths, according to the same schedule. The level of serum glucose was monitored in all patients on admission, after discharge and 6 months after the treatment. The Student t-test was used for statistical data processing and p < 0.05 was considered as statistically significant. Results: Study included 80 patients of both sexes, with an average age of 67.00 ± 5.75 years. All patients had elevated serum glucose values on admission. The initial levels of glycaemia in the control and experimental groups were not significantly different (6.99 ± 1.95 and 7.88 ± 1.90 mmol/L, respectively). At discharge, patients who performed balneotherapy had a statistically significant decrease in serum glucose values compared to patients from the control group (by 1.84 vs 0.26 mmol/L, p < 0.001). This effect did not persist six months after the end of the treatment (p > 0.05). Conclusion: The application of balneotherapy with sulphate-sulphide mineral baths containing H2S as a potent gas transmitter significantly reduces serum glucose levels in patients with knee osteoarthritis.

Background/Aim: Optimal intake of magnesium minerals is essential in maintaining the coordinated physiological functions of cells, tissues and organs. The importance of this element is reflected in the fact that it is the fourth most abundant cation in the human body, participating as a cofactor in more than three hundred enzymatic reactions. Its presence is necessary for the proper functioning of a number of vital functions, such as glycaemic control, the work of the heart and the vascular system and it can potentially play a role in the regulation of body weight. Aim of this study was to investigate the effects of subchronic intake of magnesium hydrocarbonate-rich water on changes in body weight, organ weight and cardiovascular variables in rats with streptozotocin-induced diabetes. Methods: Wistar rats (n = 28) were divided into 4 groups: two control groups, on tap water (TW-C, n = 7) and magnesium hydrocarbonate-rich water (MW-C, n = 7); and two experimental groups with streptozotocin-induced diabetes, on tap water (TW-DM, n = 7) and magnesium hydrocarbonate-rich water (MW-DM, n = 7). The values of body weight, organ weight and cardiovascular parameters were compared after 6 weeks between control groups of rats on subchronic treatment with tap water (TW-C) and magnesium hydrocarbonate-rich water (MW-C) and between groups with streptozotocin-induced diabetes on tap water (TW-DM) and with magnesium hydrocarbonate-rich water (MW-DM). Results: By comparing the values of cardiovascular parameters between groups, significant (p < 0.05) positive effects of magnesium hydrocarbonate-rich water were registered on the values of systolic and pulse blood pressure in diabetic rats fed with magnesium hydrocarbonate-rich water (MW-DM) compared to those fed with tap water (TW-DM). In contrast, no significant effect of magnesium hydrocarbonate on changes in body weight and organ weight was observed. Conclusion: Based on the results, the beneficial effects of magnesium hydrocarbonate-rich water in the regulation of blood pressure can be clearly observed. Potential effects on other cardiovascular variables and body weight and organ weight should be further investigated.

Background/Aim: Unintentional injuries among children and adolescents have become a common issue in public healthcare. The study objective was to analyse the characteristics and identify predictors associated with unintentional injuries in children and adolescents treated in emergency medical services (EMS) in the Republic of Srpska, Bosnia and Herzegovina. Methods: A cross-section study with retrospective analysis of WebMedic e-database from 14 EMS, in the period between January 2018 and December 2020 was conducted. Research included patients with unintentional injuries, aged ≤ 19 years, of both sexes. For comparison between groups, Chi-squared and multivariate logistic regression were used in risk factor analysis. Results: A total of 1,856 cases were identified, most injuries resulted from falls (46.7 %) and traffic injuries (26.9 %). Boys were significantly more affected by injuries than girls (p < 0.001). Falls were the major cause for reporting to EMS among age groups of children (0-9 years) and adolescents (10-14 years), whereas injuries in traffic were dominant in adolescents aged 15 to 19. The most common injuries were head injuries (35.7 %). Risk factors of unintentional injuries were age (p < 0.001), sex (p = 0.046), weekday (p = 0.016), winter (p = 0.014), body region (head, abdomen, lower and upper limbs (p < 0.001), thorax (p = 0.009)). Conclusions: There were significant differences in characteristics of unintentional injuries according to age and sex. Chances for occurrence of unintentional injuries among children increased with their age, especially for boys. These differences might indicate areas where preventive measures should be undertaken.

Introduction: Unintentional falls are the leading cause of traumatic injuries, without fatal consequences, with significant morbidity in the population of children and adolescents. Goal: The main goal of this research was to analyze the manner of falling in relation to age and gender, and to assess the type of injury and the anatomical region of the body affected by the injury sustained during a fall in patients ≤19 years of age treated in the emergency medical services in the Republic of Srpska. Material and methods: A cross-section study with retrospective analysis of the national e-database WebMedic from 11 emergency medical services between January 2018 and December 2020 was conducted. Research included patients with diagnosis of unintentional injury caused by a fall, aged ≤19 years. Descriptive statistics and the Chi-square test were used for comparisons between groups. Results: During the observed period, 857 cases of unintentional falls were identified, where 87.5% were referred for hospitalization. The group of children aged 0 to 9 years (55.7%) was more often treated for falls (p<0.001), and boys were affected 6.7 times more often than girls (p<0.001). Falls from the same level caused different types of injuries depending on the age and gender of the children (p<0.001). According to the type of injury, superficial injuries (36.8%) and open wounds (29.4%) were most often identified, and the most frequently affected body region was the head (52.0%). Conclusion: The group of children up to the age of nine and males were more often affected by superficial injuries and open wounds, with head injuries being predominant in all age groups. These results could indicate the necessity of creating programs with targeted prevention.