This paper investigates the jump dynamics of foreign exchange rates utilizing Barnsdorff-Nielsen and Shepherd (BNS) and Ait-Sahalia Jacob (AJ) jump detection procedures. The sample includes the nine major exchange rates of the world as well as two exchange rates from an emerging market (Turkey). The observation period is from January 1, 2010 to December 31, 2016. The number of jumps, number of jump days, average jump sizes and the ratio of negative (positive) jumps to total jumps of that observation period are estimated by BNS and AJ methods and the results are reported separately for five different sampled frequencies. The empirical results strongly suggest that jump dynamics of each exchange rate is quite unique and different from the others rather than displaying common patterns. A major result is the extreme sensitivity of the results to the chosen sampled frequencies which raises serious questions about the practical value of these tests for the investors. The paper by utilizing Event Study Analysis also shows that the foreign exchange rate jumps are related to scheduled macroeconomic news announcements.
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http://dx.doi.org/10.1016/j.heliyon.2022.e10909 | DOI Listing |
PLoS One
January 2025
Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada.
Introduction: A long-term engagement (LTE) intervention was embedded in a social marketing campaign aimed at motivating quit attempts among Canadian adult commercial tobacco users 35 to 64 years of age. The purpose of this study was to examine the effectiveness and appeal of LTE within a marketing campaign.
Methods: 3,199 Canadians who smoked cigarettes aged 35-64 recruited using Facebook and Instagram advertisements were randomized into Intervention and Control groups.
J Am Med Inform Assoc
January 2025
Department of Health and Human Services, Office of the Assistant Secretary for Technology Policy, Washington, DC 20201, United States.
Objective: To describe the prevalence of and trends in practices that interfere with the exchange of patient health information (potential information blocking) 2 years after implementation of information-blocking regulations.
Materials And Methods: Drawing from the American Hospital Association Information Technology (IT) Supplement and a national survey of health information organizations (HIOs), we described rates and methods of potential information blocking from these organizations' perspectives in 2023 and compared them to prior years.
Results: Twenty-seven percent of hospitals sometimes or often observed potential information blocking by any actor in 2023, down from 42% in 2021 and 33% in 2022.
Int J Womens Health
January 2025
Department of Gynecology and Obstetrics, Ningbo University's Women's and Children's Hospital, Ningbo, Zhejiang, 315000, People's Republic of China.
Purpose: Polycystic ovary syndrome (PCOS) is a prevalent endocrine disorder and the primary cause of anovulatory infertility among women aged 15-49 years. Despite its significance, it has been largely overlooked in global health discussions, with persistently high prevalence and incidence rates. This public health challenge necessitates attention both domestically and internationally.
View Article and Find Full Text PDFJ Subst Use Addict Treat
January 2025
Department of Public Health and Community Medicine, Tufts University School of Medicine, Boston, MA 02111, United States of America.
Introduction: The location of buprenorphine treatment providers in the United States is pivotal to the understanding of regional factors associated with prescription and uptake. We evaluated how distinct data sources of treatment providers and their associated locations contribute to the differences observed when measuring buprenorphine accessibility.
Methods: We compared buprenorphine treatment provider data from the Drug Enforcement Administration (DEA) and data from the behavioral health treatment locator from the Substance Abuse and Mental Health Services Administration (SAMHSA) for July 2022.
Am J Transplant
January 2025
Division of Nephrology, Department of Medicine, Vagelos College of Physicians & Surgeons, Columbia University, New York, NY; Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY.
There is substantial variation in access to transplantation across the United States that is not entirely explained by the availability of donor organs. Barriers to transplantation and variation in care among patients with end-stage organ disease exist prior to patients' placement on a transplant waiting list as well as following waitlist placement. However, there are currently no national data available to examine rates and variations in key care processes related to pre-listing, including transplant referral, evaluation, or candidate selection.
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