Vitamin D deficiency is a serious health problem despite a general improvement in socio-economic status in Turkey. The aim of this study was to evaluate maternal vitamin D status and its effect on neonatal vitamin D concentrations after a support programme for pregnant women was introduced. A second aim was to identify risk factors for vitamin D deficiency in a district of İstanbul. A total of 97 pregnant women and 90 infants were included in this study, conducted between January and October 2016. The demographic data, risk factors and daily vitamin intake were recorded. Serum levels of vitamin D, calcium, phosphorus and alkaline phosphatase in all subjects were measured. The mothers and newborns were divided into groups based on their vitamin D levels. The relationship between vitamin D levels and risk factors was analyzed. Mean ± standard deviation vitamin D levels for the women and their infants were found to be 14.82±11.45 and 13.16±7.16 ng/mL, respectively. The number of mothers and infants was significantly higher in the deficient group, and their mean vitamin D levels significantly lower (9.02±1.34 and 8.80±1.06 ng/mL, respectively) (p<0.001, p<0.001). Only 14.4% of pregnant women took 1000-1200 IU/day of vitamin D. When the mother groups were evaluated in terms of risk factors, there were significant differences in daily vitamin intake and clothing style (p<0.001 and p<0.001 respectively). Vitamin D deficiency in pregnant women and their infants is still a serious health problem in Turkey, although a vitamin D support programme during pregnancy has been launched by the department of health.

Purpose: In this study, it is aimed to determine the level of test anxiety and self-esteem in the high school students preparing for the university exam in Bitlis, Turkey, and to investigate the effect of test anxiety on self-esteem. Material and methods: Seven-hundred and twenty-four high school students who were preparing for the university entrance examination in Bitlis participated in the study. A questionnaire which includes socio-demographic data form, Rosenberg Self-Esteem Scale and Revised Test Anxiety Scale was prepared as an e-questionnaire for the students to fill easily and uploaded to the Bitlis State Hospital's website. Schools were called and informed for the students to fill out the e-questionnaire on the Internet. Results: The most important findings from our study are that gender is influential on test anxiety and self-esteem score and test anxiety level are negatively correlated. It was observed that female students had more test anxiety than male students and those who had higher self-esteem had less test anxiety. Conclusion: Consequently, our study shows that university entrance examination creates anxiety on students and reduces self-esteem, especially in female students.

The purpose of this research is to investigate the situational variables and performance indicators that significantly affect the match outcome (win, loss or draw) based on the quality of opposition. The data consisted of the situational variables and performance indicators of the matches in the English Premier League for the 2017–2018 season. One-way ANOVA, Tukey HSD, k-means clustering and decision tree approaches were implemented in the analyses. Scoring first was found as the most influential on match outcome in each decision tree, while the effects of clearances, shots, shots on target, possession percentage and match location on the match outcome varied according to the quality of opponent. An average of 2.43, 0.53 and 0.97 goals were scored by the teams that won, lost and drawn, respectively and teams that scored first won 67% of the matches. The decision trees based on the quality of opponent correctly predicted 67.9, 73.9 and 78.4% of the results in the games played against balanced, stronger and weaker opponents, respectively, while in all games (regardless of the quality of opponent) this rate is only 64.8%, implying the importance of considering the quality of opponent in the analyses. Coaches and managers can use these findings to create targets for players and teams during training and matches, and also can be prepared for these different competitive scenarios.

Healthcare professionals involved in the management of adverse events often experience psychological and physical distress, known as the “second victim experience.” Anesthesia and intensive care settings are particularly vulnerable to such occurrences due to the high-stakes, and highly stressful work being performed by healthcare professionals. This study aimed to assess the prevalence and dimensions of second-victim experiences among anesthesia and intensive care professionals in Türkiye, while also identifying support preferences and organizational deficiencies. A cross-sectional study was conducted with 175 healthcare professionals working in anesthesia and intensive care units in Türkiye. The Turkish adaptation of the second-victim experience and support tool (T-SVEST) was used to assess psychological distress, physical distress, professional self-efficacy, perceived support mechanisms, and outcome variables such as turnover intentions and absenteeism. Psychometric analyses, confirmatory factor analysis, and correlation/regression tests were performed to evaluate the scale’s validity and to explore correlations among key variables. The T-SVEST demonstrated strong internal consistency (Cronbach α = 0.86) and an improved factor structure following the removal of low-performing items. High levels of psychological and physical distress significantly associated with professional self-efficacy, absenteeism, and turnover intentions were reported. Supervisor and institutional support were perceived as insufficient, particularly among less experienced staff. Age and work experience were positively correlated with colleague support, while married participants reported significantly lower physical distress. Peer support and professional counseling emerged as the most desired support mechanisms. Second-victim experiences are common and consequential among anesthesia and intensive care professionals in Türkiye. The findings have highlighted substantial gaps in organizational support structures and a strong demand for evidence-based peer support systems. Institutional efforts must focus on building a culture of safety and compassion through structured interventions, supervisor training, and proactive debriefing practices to mitigate the impact of adverse events on healthcare providers.

Tourism is a critical sector for economic growth and cultural exchange, particularly for destinations like Turkey, which consistently attracts millions of visitors annually. This study investigates the dynamics of tourism demand in Turkey between 2008 and 2024, with a focus on seasonality, long-term trends, and predictive modeling accuracy. Time-series data were analyzed, and the impacts of economic indicators and digital search trends were evaluated using SARIMA and SARIMAX models. The results demonstrate that the SARIMA models outperformed the SARIMAX models, highlighting the dominance of intrinsic seasonal patterns over external regressors, such as exchange rates and inflation. The findings emphasize that geographic proximity and cultural similarities drive consistent tourist flows, while behavioral data like Google Trends provide supplementary insights into demand shifts. However, economic variables showed limited short-term predictive power. These results underscore the importance of prioritizing time-series structures in forecasting frameworks while complementing them with behavioral indicators for enhanced accuracy. This study contributes to the literature by addressing a critical gap in understanding how various factors influence tourism demand in Turkey and offers practical implications for policymakers and tourism planners to optimize strategic planning and resource allocation, ensuring sustainable tourism growth. Future research should explore hybrid models that incorporate sentiment-driven data and cultural factors for more robust forecasting.