scholarly journals Control of snakebite envenoming: A mathematical modeling study

2021 ◽  
Vol 15 (8) ◽  
pp. e0009711
Author(s):  
Shuaibu Ahijo Abdullahi ◽  
Abdulrazaq Garba Habib ◽  
Nafiu Hussaini
Keyword(s):  
Public Health ◽  
Cost Effectiveness ◽  
Control Strategies ◽  
Real Data ◽  
Disability Adjusted Life Years ◽  
Health Awareness ◽  
Data Set ◽  
Disability Adjusted Life ◽  
Life Years ◽  
The Impact

A mathematical model is designed to assess the impact of some interventional strategies for curtailing the burden of snakebite envenoming in a community. The model is fitted with real data set. Numerical simulations have shown that public health awareness of the susceptible individuals on snakebite preventive measures could reduce the number of envenoming and prevent deaths and disabilities in the population. The simulations further revealed that if at least fifty percent of snakebite envenoming patients receive early treatment with antivenom a substantial number of deaths will be averted. Furthermore, it is shown using optimal control that combining public health awareness and antivenom treatment averts the highest number of snakebite induced deaths and disability adjusted life years in the study area. To choose the best strategy amidst limited resources in the study area, cost effectiveness analysis in terms of incremental cost effectiveness ratio is performed. It has been established that the control efforts of combining public health awareness of the susceptible individuals and antivenom treatment for victims of snakebite envenoming is the most cost effective strategy. Approximately the sum of US$72,548 is needed to avert 117 deaths or 2,739 disability adjusted life years that are recorded within 21 months in the study area. Thus, the combination of these two control strategies is recommended.

scholarly journals The economic impact and cost-effectiveness of combined vector-control and dengue vaccination strategies in Thailand: results from a dynamic transmission model

2020 ◽  
Vol 14 (10) ◽  
pp. e0008805
Author(s):  
Gerhart Knerer ◽  
Christine S. M. Currie ◽  
Sally C. Brailsford
Keyword(s):  
Public Health ◽  
Cost Effectiveness ◽  
Vector Control ◽  
Dengue Fever ◽  
Control Strategies ◽  
Cost Effective ◽  
Scenario Analyses ◽  
Life Years ◽  
The Cost ◽  
The Impact

Background and aims Dengue fever is a major public health problem in tropical/subtropical regions. Prior economic analyses have predominantly evaluated either vaccination or vector-control programmes in isolation and do not really consider the incremental benefits and cost-effectiveness of mixed strategies and combination control. We estimated the cost-effectiveness of single and combined approaches in Thailand. Methods The impacts of different control interventions were analysed using a previously published mathematical model of dengue epidemiology and control incorporating seasonality, age structure, consecutive infection, cross protection, immune enhancement and combined vector-host transmission. An economic model was applied to simulation results to estimate the cost-effectiveness of 4 interventions and their various combinations (6 strategies): i) routine vaccination of 1-year olds; ii) chemical vector control strategies targeting adult and larval stages separately; iii) environmental management/ public health education and awareness [EM/ PHEA]). Payer and societal perspectives were considered. The health burden of dengue fever was assessed using disability-adjusted life-years (DALYs) lost. Costs and effects were assessed for 10 years. Costs were discounted at 3% annually and updated to 2013 United States Dollars. Incremental cost-effectiveness analysis was carried out after strategies were rank-ordered by cost, with results presented in a table of incremental analysis. Sensitivity and scenario analyses were undertaken; and the impact and cost-effectiveness of Wolbachia was evaluated in exploratory scenario analyses. Results From the payer and societal perspectives, 2 combination strategies were considered optimal, as all other control strategies were dominated. Vaccination plus adulticide plus EM/ PHEA was deemed cost-effective according to multiple cost-effectiveness criteria. From the societal perspective, incremental differences vs. adulticide and EM/ PHEA resulted in costs of $157.6 million and DALYs lost of 12,599, giving an expected ICER of $12,508 per DALY averted. Exploratory scenario analyses showed Wolbachia to be highly cost-effective ($343 per DALY averted) vs. other single control measures. Conclusions Our model shows that individual interventions can be cost-effective, but that important epidemiological reductions and economic impacts are demonstrated when interventions are combined as part of an integrated approach to combating dengue fever. Exploratory scenario analyses demonstrated the potential epidemiological and cost-effective impact of Wolbachia when deployed at scale on a nationwide basis. Our findings were robust in the face of sensitivity analyses.

Identifying Public Health Problems

2018 ◽  
Author(s):  
Scott Burris ◽  
Micah L. Berman ◽  
Matthew Penn, and ◽  
Tara Ramanathan Holiday
Keyword(s):  
Public Health ◽  
Health Problems ◽  
Health Priorities ◽  
Disability Adjusted Life Years ◽  
Quality Adjusted Life Years ◽  
Disability Adjusted Life ◽  
Life Years ◽  
Study Designs ◽  
Quality Adjusted Life

Chapter 5 discusses the use of epidemiology to identify the source of public health problems and inform policymaking. It uses a case study to illustrate how researchers, policymakers, and practitioners detect diseases, identify their sources, determine the extent of an outbreak, and prevent new infections. The chapter also defines key measures in epidemiology that can indicate public health priorities, including morbidity and mortality, years of potential life lost, and measures of lifetime impacts, including disability-adjusted life years and quality-adjusted life years. Finally, the chapter reviews epidemiological study designs, differentiating between experimental and observational studies, to show how to interpret data and identify limitations.

Assessing antiretroviral therapy success in HIV/AIDS morbidity and mortality trends in Brazil, 1990–2017: an interrupted time series study

2020 ◽  
pp. 095646242095298
Author(s):  
Augusto Cesar Lara de Sousa ◽  
Tatiana de Araujo Eleuterio ◽  
José Victor Afonso Coutinho ◽  
Raphael Mendonça Guimarães
Keyword(s):  
Time Series ◽  
Antiretroviral Therapy ◽  
Burden Of Disease ◽  
Interrupted Time Series ◽  
People Living With Hiv ◽  
Disability Adjusted Life Years ◽  
Disability Adjusted Life ◽  
Life Years ◽  
The Impact ◽  
Hiv Aids

To describe the trends of HIV/AIDS metrics related to the burden of disease for Brazil between 1990 and 2017 we conducted a timeseries analysis for HIV/AIDS indicators by extracting data from the Global Burden of Disease study. We calculated traditional prevalence, incidence and mortality rates, the number of years lost by HIV-related deaths (YLL) and disability (YLD), and disability-adjusted life years (DALY). We estimated time series models and assessed the impact of highly active antiretroviral therapy (HAART) on the same indicators. In the set of disability-adjusted life years (DALY), the highest weight of its magnitude was due to YLL. There was a decline, especially after 1996, of DALY, mortality and YLL for HIV/AIDS. However, YLD, incidence, and prevalence increased over the same period. Also, the analysis of interrupted time series showed that the introduction of HAART into health policy had a significant impact on indicators, especially for DALY and YLL. We need to assess the quality of life of people living with HIV, especially among older adults. In addition, we need to focus on primary prevention, emphasizing methods to avoid infection and public policies should reflect this.

scholarly journals Disability-adjusted Life Years for respiratory syncytial virus in children under 2 years

2020 ◽  
Author(s):  
jefferson buendia ◽  
Fernando Polack ◽  
Juana Patricia Sanchez Villamil
Keyword(s):  
Respiratory Syncytial Virus ◽  
Statistical Parameter ◽  
Epidemiological Surveillance ◽  
Years Of Life Lost ◽  
Disability Adjusted Life Years ◽  
Disability Adjusted Life ◽  
Life Years ◽  
Rsv Infection ◽  
Syncytial Virus ◽  
The Impact

Abstract BACKGROUND: Respiratory syncytial virus infection is the leading cause of bronchiolitis in Colombia. There is growing evidence about the impact of Respiratory syncytial virus on society in terms of years of life lost due to this condition. The objective of the present study is to determine the Disability-Adjusted Life Years for respiratory syncytial virus in children under 2 years in ColombiaMETHODS: Data from the national epidemiological surveillance system were used to estimate DALYs, calculated from the sum of years of life lost and years lived with disability due to RSV infection in Colombia. A bootstrapped method with 10000 iterations was used to estimate each statistical parameter using the package DALY calculator in R. RESULTS: In 2019, 260 873 years of life (CI95% 208 180- 347 023) were lost due to RSV bronchiolitis in Colombian children under 2 years. The estimated rate was 20 DALYs / 1000 person-year (95% CI 16 – 27).CONCLUSION: This is the first report estimating the impact of RSV bronchiolitis morbidity and mortality in Colombia. The findings of the present study suggest that the actual burden and cost of bronchiolitis due to RSV is high. Prevention strategies, such as RSV vaccination, to reduce morbidity associated with RSV infection should be encouraged in our country.

Abstract P116: The Impact of Diet Low in Fruits and Vegetables on Cardiovascular Disease Burden Across 195 Countries in 2015

Circulation ◽  
2017 ◽  
Vol 135 (suppl_1) ◽  
Author(s):  
Patrick J Sur ◽  
Ashkan Afshin
Keyword(s):  
Cardiovascular Disease ◽  
Fruits And Vegetables ◽  
Population Level ◽  
Optimal Level ◽  
Protective Effects ◽  
Disability Adjusted Life Years ◽  
Country Level ◽  
Disability Adjusted Life ◽  
Life Years ◽  
The Impact

Introduction: While cardio-protective effects of fruits and vegetables are well-established, the impact of their suboptimal intake on the CVD burden across nations and levels of development has not been evaluated. Objective: To systematically quantify the burden of CVD attributable to low intake of fruits and low intake of vegetables in 195 countries by age, sex, country, and development status in 2015. Methods: We obtained data on consumption of fruits and vegetables from nationally or subnationally representative nutrition surveys and data on their national availability from the UN FAO. Etiologic effect sizes of fruits and vegetables on CVD endpoints were obtained from meta- analyses of prospective cohort studies. The optimal level of intakes for each was determined based on the levels associated with lowest risk of mortality in prospective observational studies. A comparative risk assessment analysis was conducted to quantify the proportion of disability- adjusted life years (DALYs) attributable to low intake of each. The variation of this burden was further evaluated across different levels of our newly developed socio-demographic index (SDI). Results: In 2015, low intake of fruits accounted for 57.3 (95% UI: 37.1- 78.4) million DALYs due to CVD globally (41.5% from IHD and 58.5% from stroke). Low intake of vegetable caused 44.6 (23.6- 68.8) million CVD DALYs (67.3% IHD and 32.7% stroke). The highest burden of CVD attributable to low intake of fruits and vegetables was seen in the middle and low-middle SDI quintiles (17.2 and 14.3% of total DALYs), while the lowest burden for each was seen in high and high-middle SDI quintiles (12.7 and 11.2%). At the country level, the attributable CVD burden ranged from 5.1% of total DALYs (Rwanda) to 23.2% (Bangladesh) for low intake of fruit and from 5.9% (North Korea) to 19.4% (Mongolia) for low intake of vegetable. Conclusion: Our findings suggest that population inventions to increase consumption of fruits and vegetables at population level could save millions of life years globally. Figure. Age-standardized proportion of disability-adjusted life years attributable to low intake of fruits (A) and vegetables (B) from cardiovascular disease among adults (> 25y) in 2015.

scholarly journals Economic evaluation of ‘Men on the Move’, a ‘real world’ community-based physical activity programme for men

2020 ◽  
Author(s):  
Liam Kelly ◽  
Michael Harrison ◽  
Noel Richardson ◽  
Paula Carroll ◽  
Tom Egan ◽  
...  
Keyword(s):  
Public Health ◽  
Physical Activity ◽  
Economic Evaluation ◽  
Cost Effectiveness ◽  
Health Benefits ◽  
Cost Effective ◽  
Health Improvement ◽  
Community Based ◽  
Life Years ◽  
The Impact

Abstract Background Physical activity (PA) interventions capable of producing health benefits cost effectively are a public health priority across the Western world. ‘Men on the Move’ (MOM), a community-based PA intervention for men, demonstrated significant health benefits up to 52-weeks (W) post-baseline. This article details the economic evaluation of MOM with a view to determining its cost-effectiveness as a public health intervention to be rolled out nationally in Ireland. Methods Cost-effectiveness was determined by comparing the costs (direct and indirect) of the programme to its benefits, which were captured as the impact on quality-adjusted life-years (QALYs). For the benefits, cost–utility analysis was conducted by retrospectively adapting various health-related measures of participants to generate health states using Brazier et al.’s (2002) short form-6D algorithm. This in turn allowed for ‘utility measures’ to be generated, from which QALYs were derived. Results Findings show MOM to be cost-effective in supporting an ‘at risk’ cohort of men achieves significant improvements in aerobic fitness, weight loss and waist reduction. The total cost per participant (€125.82 for each of the 501 intervention participants), the QALYs gained (11.98 post-12-W intervention, or 5.3% health improvement per participant) and estimated QALYs ratio costs of €3723 represents a cost-effective improvement when compared to known QALY guidelines. Conclusions The analysis shows that the cost per QALY achieved by MOM is significantly less than the existing benchmarks of £20 000 and €45 000 in the UK and Ireland respectively, demonstrating MOM to be cost-effective.

scholarly journals Using QALYs versus DALYs to measure cost-effectiveness: How much does it matter?

2020 ◽  
Vol 36 (2) ◽  
pp. 96-103 ◽  
Author(s):  
Xue Feng ◽  
David D. Kim ◽  
Joshua T. Cohen ◽  
Peter J. Neumann ◽  
Daniel A. Ollendorf
Keyword(s):  
Cost Effectiveness ◽  
Medical Center ◽  
Disability Adjusted Life Years ◽  
Quality Adjusted Life Years ◽  
Effectiveness Analysis ◽  
Disability Weights ◽  
Disability Adjusted Life ◽  
Life Years ◽  
Relative Differences ◽  
Quality Adjusted Life

ObjectivesQuality-adjusted life-years (QALYs) and disability-adjusted life-years (DALYs) are commonly used in cost-effectiveness analysis (CEA) to measure health benefits. We sought to quantify and explain differences between QALY- and DALY-based cost-effectiveness ratios, and explore whether using one versus the other would materially affect conclusions about an intervention's cost-effectiveness.MethodsWe identified CEAs using both QALYs and DALYs from the Tufts Medical Center CEA Registry and Global Health CEA Registry, with a supplemental search to ensure comprehensive literature coverage. We calculated absolute and relative differences between the QALY- and DALY-based ratios, and compared ratios to common benchmarks (e.g., 1× gross domestic product per capita). We converted reported costs into US dollars.ResultsAmong eleven published CEAs reporting both QALYs and DALYs, seven focused on pharmaceuticals and infectious disease, and five were conducted in high-income countries. Four studies concluded that the intervention was “dominant” (cost-saving). Among the QALY- and DALY-based ratios reported from the remaining seven studies, absolute differences ranged from approximately $2 to $15,000 per unit of benefit, and relative differences from 6–120 percent, but most differences were modest in comparison with the ratio value itself. The values assigned to utility and disability weights explained most observed differences. In comparison with cost-effectiveness thresholds, conclusions were consistent regardless of the ratio type in ten of eleven cases.ConclusionsOur results suggest that although QALY- and DALY-based ratios for the same intervention can differ, differences tend to be modest and do not materially affect comparisons to common cost-effectiveness thresholds.

scholarly journals Cost Effectiveness Analysis Using Disability-Adjusted Life Years for Cataract Surgery

2020 ◽  
Vol 17 (16) ◽  
pp. 6010
Author(s):  
Thinni Nurul Rochmah ◽  
Anggun Wulandari ◽  
Maznah Dahlui ◽  
Ernawaty ◽  
Ratna Dwi Wulandari
Keyword(s):  
Cost Effectiveness ◽  
Cataract Surgery ◽  
Cost Effective ◽  
Disability Adjusted Life Years ◽  
Cost Effectiveness Ratio ◽  
Small Incision Cataract Surgery ◽  
Post Surgery ◽  
Disability Adjusted Life ◽  
Life Years ◽  
The Cost

Cataracts are the second most prioritized eye disease in the world. Cataracts are an expensive treatment because surgery is the only method that can treat the disease. This study aims to analyze the cost effectiveness of each operating procedure. Specifically, phacoemulsification and Small Incision Cataract Surgery (SICS) with Disability-Adjusted Life Years (DALYs) as the effectiveness indicator is used. This study is an observational analytic study with a prospective framework. The sample size is 130 patients who have undergone phacoemulsification and 25 patients who have undergone SICS. The DALY for phacoemulsification at Day-7 (D-7) is 0.3204, and at Day-21 (D-21), it is 0.3204, while the DALY for SICS at D-7 is 0.3060, and at D-21, it is 0.3158. The incremental cost effectiveness ratio (ICER) for cataract surgery at D-7 is USD $1872.49, and at D-21, it is USD $5861.71, whereas the Indonesian Gross Domestic Product (GDP) is USD $4174.90. In conclusion, the phacoemulsification technique is more cost effective than the SICS technique. The ICER value is very cost effective at D-7 post-surgery compared to at D-21 post-surgery because the ICER is less than 1 GDP per capita per DALY.

scholarly journals Impact of COVID-19 Attributable Deaths on Longevity, Premature Mortality and DALY: Estimates of USA, Italy, Sweden and Germany

2020 ◽  
Author(s):  
Sanjay K Mohanty ◽  
Manisha Dubey ◽  
Udaya S Mishra ◽  
Umakanta Sahoo
Keyword(s):  
Life Expectancy ◽  
Premature Mortality ◽  
Actual Number ◽  
Disability Adjusted Life Years ◽  
Disability Adjusted Life ◽  
Life Years ◽  
Control And Prevention ◽  
The Usa ◽  
The Impact ◽  
United Nation

AbstractIn a short span of four months, the COVID-19 pandemic has added over 0.4 million deaths worldwide, which are untimely, premature and unwarranted. The USA, Italy, Germany and Sweden are four worst affected countries, accounting to over 40% of COVID-19 deaths globally. The main objective of this study is to examine the impact of COVID-19 attributable deaths on longevity, years of potential life lost (YPLL) and disability adjusted life years (DALY) in USA, Italy, Germany and Sweden. Data from United Nation Population Projection, Statista and centre for disease control and prevention were used in the analyses. Life expectancy, YPLL and DALY were estimated under four scenarios; no COVID-19 deaths, actual number of COVID-19 death as of 22nd May, 2020 and anticipating COVID-19 death share of 6% and 10% respectively. The COVID-19 attributable deaths have lowered the life expectancy by 0.4 years each in USA and Sweden, 0.5 years in Italy and 0.1 years in Germany. The loss of YPLL was 1.5, 0.5, 0.1 and 0.5 million in USA, Italy, Germany and Sweden respectively. The DALY (per 1000 population) due to COVID-19 was 4 in USA, 6 in Italy, 1 each in Germany and Sweden. Compression in life expectancy and increase in YPLL and DALY may intensify further if death continues to soar. COVID-19 has a marked impact on mortality. Reduction in longevity premature mortality and loss of DALY is higher among elderly.

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