Hybrid Fourier asymmetric-garch estimation of value at risk and expected shortfall: Empirical evidence from crude oil prices.

We propose a hybrid Fourier approximation in an autoregressive fractional integrated moving average (ARFIMA) model, to account for periodic unoberved components in financial time series. We apply this hybrid model on parametric estimation of value at risk (VaR) and expected shortfall (ES). Using crude oil returns, we show that Fourier approximation inclusion significantly accounts for unobserved periodic components in a VaR estimation using exponential generalized autoregressive conditional heteroscedasticity (EGARCH) model under generalized error distribution (GED). Similarly, in VaR estimation, Fourier approximation inclusion significantly accounts for unobserved periodic components using asymmetric power generalized autoregressive conditional heteroscedasticity (APARCH) model under skewed normal distribution (SNORM). For ES estimation, Fourier approximation inclusion only significantly accounts for unobserved periodic components of APARCH under SNORM.

Knowledge and management practices of infant teething symptoms among mothers in a tertiary facility in Ghana.

Introduction: teething is a natural process that all infants go through, and most toddlers obtain their first tooth around six months. However, misconceptions about teething and its remedies are still prevalent. The study assessed the knowledge and management practices of infant teething symptoms among mothers whose children were admitted to the Pediatric ward of Tamale Teaching Hospital. Methods: the study adopted a prospective descriptive cross-sectional design with a quantitative data collection method. A total of 251 mothers were selected using a convenient sampling strategy, and a structured questionnaire was used for data collection. Results: the study found that 79.7% and 20.3% of respondents had good and poor knowledge of teething, respectively. Also, 65.3% and 34.7% of the mothers had good and poor practices, respectively, in the management of teething symptoms. Marital status (p= 0.029) and type of ward (p= 0.020) were significantly associated with mothers' knowledge of teething. Furthermore, mothers less than 30 years of age (OR, 2.07; 95% CI: 1.19-3.57; p= 0.009) and mothers with formal education (OR, 2.22; 95% CI: 1.22-3.81; p= 0.004) were more likely to have good management practices for teething symptoms. Conclusion: most mothers have a good understanding of child teething, but they do not think delayed eruptions indicate systemic disease. They identified taking the child to the hospital during teething symptoms and administering Paracetamol to relieve the symptoms as standard practices. However, more education is needed to differentiate between teething signs and other ailments and to prevent substandard first aid practices during teething.

Oncology care providers' perceptions and anticipated barriers regarding the use of geriatric assessment in routine clinic practice: A mixed-methods study.

INTRODUCTION: Geriatric assessment (GA) is currently not a standard of cancer care across Canada. In the Canadian province of Saskatchewan, there are no known formal geriatric teams in outpatient oncology settings. Therefore, it is not known whether, how, and to what extent GA is performed in oncology clinics, or what supports are needed to carry out a GA. The objective of this study was to explore Saskatchewan oncology care providers' knowledge, perceptions, and practices regarding GA, and their perceived barriers to implementing formal GA. MATERIALS AND METHODS: In this mixed-methods study, oncology physicians and nurses within the Saskatchewan Cancer Agency (SCA) were invited to participate in an anonymous survey and individual open-ended interview. Quantitative survey data were analyzed using descriptive statistics; free-text responses provided in the survey were summarized. Data from interviews were analyzed using thematic analysis. RESULTS: A total of 19 physicians and 30 clinic nurses participated in the survey (response rate: 24% [physicians] and 38.0% [nurses]). In terms of cancer treatment and management, the majority (74% of physicians and 62% of nurses) stated considerations for older adults are different than younger patients. More than half (53% of physicians and 58% of nurses) reported making treatment and management decisions primarily based on judgement versus validated tools. For physicians whose practices involve prescribing chemotherapy (16/19), 75% rarely or never use validated tools (e.g., CARG, CRASH) to assess risk of chemotoxicity for older patients. Lack of time and supporting staff and feeling unsure as to where to refer older patients for help or follow-up were the most commonly voiced anticipated barriers to implementing GA. Two physicians and six nurses (n = 8) participated in the open-ended interviews. Main themes included: (1) tension between knowing the importance of GA versus capacity and (2) buy-in. DISCUSSION: Our findings review barriers and opportunities for implementing GA in oncology care in Saskatchewan and provides foundational knowledge to inform efforts to promote personalized medicine and to optimize cancer care for older adults with cancer in this region.

Pathways to sustainability: how China's Belt and Road Initiative is shaping responsible production and consumption in Africa.

Africa faces significant economic and environmental challenges, including waste generation, food insecurity, and energy inefficiency, jeopardizing future generations. To address this, Africa has adopted the 10-year Sustainable Consumption and Production Framework for Africa (10-YFP), evident through national and local projects focusing on sustainable food and agriculture, technology transfer in water irrigation, and related initiatives. The Belt and Road Initiative (BRI) presents an opportunity for promoting green cooperation and sustainable development in Africa, though its impact on ethical production and consumption remains unexplored. This study evaluates the BRI's role in achieving Africa's Twelve Sustainable Development Goals (SDGs) and catalyzing responsible consumption and production. Through interviews and focus group discussions (FGDs) involving 42 participants from 19 African countries, thematic patterns emerged using the thematic inductive method. Findings indicate that BRI initiatives effectively integrate advanced technologies to enhance sustainable agriculture and industrial production. Notably, BRI investments in countries like Morocco, Algeria, Ethiopia, Kenya, and Zambia are fostering renewable energy projects to provide electricity to underserved communities. A stronger alignment between national sustainable development plans and the green BRI is essential to maximize the benefits without compromising BRI principles of inclusivity, coordination, coherence, and capacity building. This research fosters dialogue among academics, educators, government officials, business leaders, and investors about the transformative potential of China's BRI in African nations. By shedding light on the positive strides made by BRI programs, this study underscores the need for strategic synergy between international cooperation efforts and localized sustainability agendas, ultimately propelling Africa toward its long-term development goals.

They patronize herbal medicine, coincidence or planned behaviour: A case of hypertensive patients in Tamale?

AIM: This study assessed, if use of herbal medicine (HM) among hypertensive patients is coincidence or planned. DESIGN: Cross-sectional survey. METHODS: The study used a cross-sectional survey for collection of data from four (4) herbal medicine clinics in the Tamale metropolis in northern Ghana. RESULTS: The final or overall regression model was significant at R2 = 0.350, F(7, 214) = 16.464, p < 0.001. No sociodemographic characteristic predicted herbal medicine use. Only religion and educational level were associated with herbal medicine use. Attitude (p = 0.002), subjective norms (p = 0.001) and behavioural intention (p = 0.000) significantly predicted HM use. PUBLIC CONTRIBUTION: Data were collected from respondents only after they had verbally given free and informed consent to take part in the study. The results of this study therefore showed that herbal medicine use among these patients is not coincidence but planned. Health professionals by this study should appreciate the effect of religion and educational background in their health education on Herbal Medicines.