scholarly journals News Events and Their Relationship With US Vape Sales: An Interrupted Time Series Analysis

2021 ◽  
Author(s):  
Kamila Janmohamed ◽  
Shinpei Nakamura Sakai ◽  
Abdul-Nasah Soale ◽  
Laura Forastiere ◽  
Navin Kumar
Keyword(s):  
Time Series ◽  
Risk Perceptions ◽  
News Coverage ◽  
Policy Instruments ◽  
Positive Association ◽  
Interrupted Time Series ◽  
The United States ◽  
Interrupted Time Series Analysis ◽  
Mortality Burden ◽  
News Events

Abstract Objective News coverage around vaping-related events may have furthered misconceptions regarding the relative harms of vapes. Such information may influence the decisions of individuals who smoke, around switching to vaping, potentially affecting the overall tobacco mortality burden. Thus, it is prudent to study how news events (e.g., 2019 vaping illness epidemic) are associated with vape sales in the United States, to possibly reduce the tobacco mortality burden. Methods We used weekly retail sales data for e-cigarettes (30 December 2018 - 28 December 2019) from the US retail scanner data compiled by the Nielsen Company. We used an interrupted time series design with segmented regression analysis to determine immediate and longer-term impacts of individual news events (e.g. Trump administration's planned ban on flavored vaping products) on vape sales, controlling for pre-existing trends.Results Unexpectedly, we noted a statistically significant positive relationship between vape sales and the CDC announcing an investigation into vaping-related illnesses (Change: 6.59%, Estimate: 0.064; 95% CI: 0.036, 0.092; P<0.001). We also observed a similar positive association between vape sales and the CDC's announcement on the link between Vitamin E acetate and EVALI (Change: 2.93%, Estimate: 0.029; 95% CI: 0.003, 0.055; P<0.05). There was a steep decline in sales after these events.ConclusionsNews events are associated with US vape sales. Findings have implications for the management of risk perceptions around vaping to improve health outcomes of tobacco users. Information-based policy instruments can be applied to balance the effects of news events that may influence vape sales.

scholarly journals Global Utilization Trends of Direct Acting Antivirals (DAAs) during the COVID-19 Pandemic: A Time Series Analysis

Viruses ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1314
Author(s):  
Ahmad Shakeri ◽  
Natalia Konstantelos ◽  
Cherry Chu ◽  
Tony Antoniou ◽  
Jordan Feld ◽  
...  
Keyword(s):  
Time Series ◽  
Time Series Analysis ◽  
Interrupted Time Series ◽  
The United States ◽  
Interrupted Time Series Analysis ◽  
Cross Sectional ◽  
Series Analysis ◽  
Hcv Prevalence ◽  
Direct Acting ◽  
The Impact

The 2019 novel coronavirus (COVID-19) pandemic has placed a significant strain on hepatitis programs and interventions (screening, diagnosis, and treatment) at a critical moment in the context of hepatitis C virus (HCV) elimination. We sought to quantify changes in Direct Acting Antiviral (DAA) utilization among different countries during the pandemic. We conducted a cross-sectional time series analysis between 1 September 2018 and 31 August 2020, using the IQVIA MIDAS database, which contains DAA purchase data for 54 countries. We examined the percent change in DAA units dispensed (e.g., pills and capsules) from March to August 2019 to the same period of time in 2020 across the 54 countries. Interrupted time-series analysis was used to examine the impact of COVID-19 on monthly rates of DAA utilization across each of the major developed economies (G7 nations). Overall, 46 of 54 (85%) jurisdictions experienced a decline in DAA utilization during the pandemic, with an average of −43% (range: −1% in Finland to −93% in Brazil). All high HCV prevalence (HCV prevalence > 2%) countries in the database experienced a decline in utilization, average −49% (range: −17% in Kazakhstan to −90% in Egypt). Across the G7 nations, we also observed a decreased trend in DAA utilization during the early months of the pandemic, with significant declines (p < 0.01) for Canada, Germany, the United Kingdom, and the United States of America. The global response to COVID-19 led to a large decrease in DAA utilization globally. Deliberate efforts to counteract the impact of COVID-19 on treatment delivery are needed to support the goal of HCV elimination.

Reagan and the Russians: Crisis Bargaining Beliefs and the Historical Record

1984 ◽  
Vol 78 (2) ◽  
pp. 338-355 ◽  
Author(s):  
Russell J. Leng
Keyword(s):  
Soviet Union ◽  
Positive Association ◽  
Interrupted Time Series ◽  
The United States ◽  
Historical Record ◽  
Interrupted Time Series Analysis ◽  
Crisis Bargaining ◽  
The Soviet Union ◽  
Influence Attempts ◽  
Zero Sum

Reagan's view of how to deal with the Soviet Union is compared to the U. S. performance record in three Soviet-American crises: Berlin, 1948-1949, Berlin, 1961, andCuba, 1962. Reagan's public statements indicate that he views the Soviets as incorrigibly hostile, so that conflict bargaining with the Soviets is a zero-sum game requiring a coercive U.S. bargaining strategy. This is characterized as a “bullying” strategy and contrasted with a “reciprocating” approach. The two approaches provide competing hypotheses for an examination of Soviet responses to U.S. influence attempts. The study tests the association between types of U.S. influence attempts and initial Soviet reactions and then proceeds to an interrupted time series analysis of the longer effects of U. S. threats of force on the mix of coercion-accommodation in Soviet crisis bargaining. The author finds a positive association between specific U.S. threats of force and initial Soviet responses in kind, and between carrot-and-stick inducements that use less specific threats and more accommodative Soviet responses. With the exception of the Cuban crisis, U.S. threats of force have not been associated with significant extended shifts in the level of Soviet hostility. The article concludes that, on balance, the performance record of the United States is more supportive of the efficacy of a reciprocating strategy than the coercive bargaining strategy implied by Reagan's beliefs.

scholarly journals COVID-19 and Antibiotic Prescribing in Pediatric Primary Care

PEDIATRICS ◽  
2022 ◽  
Author(s):  
Lauren Dutcher ◽  
Yun Li ◽  
Giyoung Lee ◽  
Robert Grundmeier ◽  
Keith W. Hamilton ◽  
...  
Keyword(s):  
Primary Care ◽  
Time Series ◽  
Time Series Analysis ◽  
Interrupted Time Series ◽  
The United States ◽  
Pediatric Primary Care ◽  
Antibiotic Prescribing ◽  
Interrupted Time Series Analysis ◽  
Series Analysis ◽  
The Impact

BACKGROUND AND OBJECTIVES: With the onset of the coronavirus disease 2019 (COVID-19) pandemic, pediatric ambulatory encounter volume and antibiotic prescribing both decreased; however, the durability of these reductions in pediatric primary care in the United States has not been assessed. METHODS: We conducted a retrospective observational study to assess the impact of the COVID-19 pandemic and associated public health measures on antibiotic prescribing in 27 pediatric primary care practices. Encounters from January 1, 2018, through June 30, 2021, were included. The primary outcome was monthly antibiotic prescriptions per 1000 patients. Interrupted time series analysis was performed. RESULTS: There were 69 327 total antibiotic prescriptions from April through December in 2019 and 18 935 antibiotic prescriptions during the same months in 2020, a 72.7% reduction. The reduction in prescriptions at visits for respiratory tract infection (RTI) accounted for 87.3% of this decrease. Using interrupted time series analysis, overall antibiotic prescriptions decreased from 31.6 to 6.4 prescriptions per 1000 patients in April 2020 (difference of −25.2 prescriptions per 1000 patients; 95% CI: −32.9 to −17.5). This was followed by a nonsignificant monthly increase in antibiotic prescriptions, with prescribing beginning to rebound from April to June 2021. Encounter volume also immediately decreased, and while overall encounter volume quickly started to recover, RTI encounter volume returned more slowly. CONCLUSIONS: Reductions in antibiotic prescribing in pediatric primary care during the COVID-19 pandemic were sustained, only beginning to rise in 2021, primarily driven by reductions in RTI encounters. Reductions in viral RTI transmission likely played a substantial role in reduced RTI visits and antibiotic prescriptions.

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