Economic Incentives and Residential Waste Management in Taiwan: An Empirical Investigation

This paper presents an empirical study of how three waste management policies have affected residential waste generation and recycling behavior in Taiwan over the past decade. The three policies are unit-pricing of garbage in Taipei, a mandatory recycling program in Kaohsiung, and a nationwide policy of charging for plastic bags. We estimate policy effects on total waste, total recycling, and recycling of four specific materials, all measured by weight per capita. Unlike prior work, we find that unit-pricing and mandatory recycling policies lead to significant increases in recycling of most materials, as well as increased levels of total recycling and garbage reduction. The “plastic bag” policy is generally found to lower material-specific and total recycling rates, as well as total garbage volumes.     

The effect of experience and quantity-based pricing on the valuation of a curbside recycling program

Quantity-based pricing for garbage collection services and recycling programs are becoming increasingly popular methods of meeting municipal solid waste diversion objectives. This article investigates household willingness to pay (WTP) for a pilot curbside recycling program (CRP) in the presence of a quantity-based pricing scheme for garbage collection services, which allows a household to alter their garbage container size at a reduced price. Unlike previous studies that have modeled the simultaneity of these household decisions as a two-step process, we jointly estimate the household's intentions using a full-information maximum-likelihood (FIML) approach. Our results show a strong positive correlation between a household's WTP for a CRP and its stated intention to reduce its garbage container size when a CRP is offered. The positive correlation suggests that WTP will be higher for households which are more likely to reduce their garbage container size. Thus, in the presence of quantity-based pricing, a household's WTP for recycling more fully reflects the marginal social costs of garbage disposal.     

Effects of Unit-Based Garbage Pricing: A Differences-in-Differences Approach

Using a unique 10-year dataset of all 458 Dutch municipalities, we apply a differences-in-differences approach to estimate the effect of unit-based pricing on household waste quantities and recycling. Community-level studies of unit-based pricing typically do not include fixed effects at the local level. We find that failure to do so may substantially inflate the estimated price effect. We also find that unit-based pricing may be endogenous, and use instrumental variables to account for this. Our analysis shows that user fees depend on user fees in neighboring jurisdictions (policy interaction). Our estimate of the garbage reduction per $1 user fee is lower than any previous estimate bar one. The price effect depends on the pricing system: weight-based systems reduce garbage quantities more than volume-based systems. User fees increase recycling, especially of paper, but not nearly as much as they reduce garbage quantities. We find no evidence for waste tourism or illegal dumping.     

ILLEGAL DISPOSAL AND WASTE COLLECTION FREQUENCY

A model of household refuse production is presented in which the implications of the presence of dumping incentives for the public choice of garbage collection frequency under a user fee system are analysed. Insofar as governments wishing to balance their waste collection service budgets can set the marginal benefit of collecting garbage equal to its marginal cost, no externality arises through pick‐up frequency. However, when the expected punishment for dumping is zero or independent of its extent, the public provision of refuse collection frequency turns out to be negatively affected by the amount of garbage that individuals dump and, therefore, intervention in the management of household waste is required. The optimal policy is found to consist of taxes on consumption goods and subsidies for curbside (or legal) disposal and recycling that are directly linked to collection costs.     

PRICE AND SUBSTITUTION IN RESIDENTIAL SOLID WASTE

Many per-unit curbside recycling and garbage collection pricing systems were implemented in the 1990s. A detailed data set is used to estimate the effect of an increase in the per-unit price change for a long-running pricing system across time in one city. A fixed-effects regression controls for collection district and explanatory variables including weather, time, and employment changes. The elasticity estimate is within the range of previous work but with a higher cross-price elasticity to recycling. This shift to recycling results in significant financial benefits to the city and a small decrease in social welfare. ( JEL Q5, Q53)     

Explaining the variation in household recycling rates across the UK

Household waste recycling rates vary significantly both across and within regions of the UK. This paper attempts to explain the variation by using a new data set of waste recycling rates and policy determinants for all of the UK's 434 local authorities over the period 2006Q2 to 2008Q4. Our results suggest that the method of recycling collection chosen by policy makers is an important factor influencing the recycling rate. We also find an inverse relationship between the frequency of the residual waste collection and the recycling rate.     

Wasting Time? Recycling Incentives in Urban Taiwan and Japan

What makes recycling work? We study the factors driving household waste disposal and recycling in 18 cities in Taiwan and Japan in order to understand the impact of alternative waste management incentives. We show that this depends on the effect of distinct policies on the relative costs of the main alternative disposal methods: recycling, disposal to landfill and illegal dumping. The willingness both to recycle and to dispose to landfill depends on the relative costs of the waste collection regime, and these are dominated by the time cost of alternative disposal methods. The higher the frequency of waste collection, the less recycling and the more disposal to landfill there will be. This is because frequent collection reduces the marginal time-cost of disposal to landfill. Curbside collection of recyclable material, and the frequency of that collection, has a similar effect on the recycling rate. Although direct incentives, such as unit pricing are important in the waste disposal decision, recycling depends primarily on management of the time-costs it involves.     

“互联网+再生资源回收”模式推进机制的三方演化博弈研究

随着垃圾分类政策逐步在全国范围内推行,一些企业将互联网技术与垃圾分类回收相结合,提出了“互联网+再生资源回收”的新模式,但目前该模式仍处于探索阶段,想要在全国范围内推广还有诸多问题需要解决。论文基于演化博弈论理论,构建“互联网+再生资源回收”模式下城市生活垃圾分类回收的演化博弈模型,对博弈三方行为决策进行分析以及仿真验证,研究结果表明:政府的监督成本、政府提供给垃圾分类企业和居民的财政补贴、政府对垃圾分类企业的行政处罚力度以及居民参与垃圾分类的直接收益等因素是制约三方演化博弈能否达到理想均衡状态的关键,进一步分析模型成因,并针对结果提出几点建议。     

西安市生活垃圾处理方略研究

随着城市化进程的不断加快和城市规模的日益扩大,西安的环境污染如垃圾污染等问题也El益严重。在对西安市的垃圾处理现状进行大量实地考察的基础上提出：以政策为先导,促进垃圾处理的产业化;加强统一管理,积极推行市场机制;控制生产型企业垃圾产生指标,零售业参与垃圾回收;有效利用国内外先进技术和经验,改进和淘汰现有的落后的垃圾处理技术;有效利用媒体等各种手段,多途径宣传环保知识等一系列具体措施,可为相关部门解决这一问题提供具一定操作性的借鉴与参考。     

An EU Recycling Target: What Does the Dutch Evidence Tell Us?

The European Union (EU) advocates a household waste recycling rate of more than 65 %. Although the Netherlands has already invested heavily in recycling policies, this is still a big challenge as nowadays this rate is approximately 50 % on average and very few no municipalities have a rate above 65 %. Given this practice, it is possible to learn from the Dutch experience which policies are effective in increasing recycling rates. Based on a large panel data set for the Netherlands, we show that unit-based pricing, avoiding a duo-bin for unsorted and compostable waste, and reducing the frequency of collecting unsorted and compostable waste at the curbside are effective in raising the recycling rate. However, only a bag-based pricing system has a substantial effect, but this policy can have some adverse effects. Other unit-based pricing systems have effects of less than 10 % points. In nearly all cases, changing the frequency of collection of recyclables has no or very small effects. Moreover, the complementarity between unit-based pricing and curbside service is low. Overall, it seems very difficult to reach the EU goal of 65 % with the policies applied.     

Optimizing Environmental Product Life Cycles

In this paper, we propose a methodology, based on materials accounting and operational research techniques, to assess different industry configurations according to their life cycle environmental impacts. Rather than evaluating a specific technology, our methodology searches for the feasible configuration with the minimum impact. This approach allows us to address some basic policy-relevant questions regarding technology choice, investment priorities, industrial structures, and international trade patterns. We demonstrate the methodology in the context of the European pulp and paper industry. We are able to show that current environmental policy's focus on maximizing recycling is optimal now, but that modest improvements in primary pulping technology may shift the optimal industry configuration away from recycling toward more primary pulping with incineration. We show that this will have significant implications for the amount and type of environmental damage, for the location of different stages in the production chain, and for trade between European member states. We caution policy makers that their single-minded focus on recycling may foreclose investment in technologies that could prove environmentally superior. Finally, we hint that member state governments may be fashioning their environmental policy positions at least in part on some of the trade and industrial implications we find.     

Primary resource use and voluntary recycling schemes: Dynamic issues in a global context

A simple dynamic model is developed to show that recycling schemes dependent on voluntary action may, in the long run, lead to greater use of primary materials. The agents are a primary-materials producer and a materials user (interpreted as global South and North). Northern producers of the final good are effectively subsidised by voluntary recycling efforts and their accumulation intensity rises to a degree which may offset the unit savings on primary materials. The most effective way to conserve primary sources in the long run is to reduce the Northern savings propensity.     

Determinants of private health insurance coverage among Mexican American men 2010–2013

Abstract

Background: Private health insurance (PHI) represents the largest source of insurance for Americans. Hispanic Americans have one of the lowest rates of PHI coverage. The largest group in the US Hispanic population are Mexican Americans; they account for about two in every three Hispanics. One in every three Mexican Americans aged 64 years and under did not have health insurance coverage. Mexican Americans have the most unfavorable health insurance coverage of any population group in the nation.

Objectives: The objective is to determine the factors associated with the gap in PHI coverage between Mexican American and non-Hispanic American men.

Methods: This study used the National Health Interview Surveys (2010–2013) as the sample. A non-linear Oaxaca-Blinder decomposition was run, estimating the explained and unexplained gap in PHI coverage between the groups. Several robustness tests of the model were also included.

Results: This study estimates that 44.4% of employed Mexican American men are covered by PHI compared to 79.5% of non-Hispanic American men. Nearly 60% of employed Mexican American men were found to be foreign born, 35% have an educational attainment less than a high school degree, and 40% are likely to have language barriers. Decomposition results show that income, low educational attainment, being foreign-born, and language barriers diminished the probability of private health insurance coverage for Mexican Americans, and that 10% of the gap is unexplained.

Conclusions: Most of the difference in the PHI rate between Mexican American men and non-Hispanic men is explained by observable differences in group characteristics: education, language, and immigration status. About 10% of the difference can be attributed to discrimination under the traditional interpretation of an Oaxaca-Blinder decomposition. The PHI rate gap is large and persistent for Mexican American men.     

Comparison of statistical analysis methods for object case best–worst scaling

Abstract

Aims: Different methods have been used to analyze “object case” best–worst scaling (BWS). This study aims to compare the most common statistical analysis methods for object case BWS (i.e. the count analysis, multinomial logit, mixed logit, latent class analysis, and hierarchical Bayes estimation) and to analyze their potential advantages and limitations based on an applied example.

Methods: Data were analyzed using the five analysis methods. Ranking results were compared among the methods, and methods that take respondent heterogeneity into account were presented specifically. A BWS object case survey with 22 factors was used as a case study, tested among 136 policy-makers and HTA experts from the Netherlands, Germany, France, and the UK to assess the most important barriers to HTA usage.

Results: Overall, the five statistical methods yielded similar rankings, particularly in the extreme ends. Latent class analysis identified five clusters and the mixed logit model revealed significant preference heterogeneity for all, with the exception of three factors.

Limitations: The variety of software used to analyze BWS data may affect the results. Moreover, this study focuses solely on the comparison of different analysis methods for the BWS object case.

Conclusions: The most common statistical methods provide similar rankings of the factors. Therefore, for main preference elicitation, count analysis may be considered as a valid and simple first-choice approach. However, the latent class and mixed logit models reveal additional information: identifying latent segments and/or recognizing respondent heterogeneity.     

Management of vaccinations in Italy: a national survey after healthcare regionalization

Abstract

Objectives:

The main aim of this study was to describe the effects of regional organization and performance in managing vaccinations, in the light of the institutional devolution recently introduced in Italy.

Methods:

We analysed (1) the general organization of regions for vaccination programmes, (2) the management of four vaccination programmes (combined measles-rubella-parotitis, varicella for children, influenza, and pneumococcal 23-valent for adults).

First, we conducted preliminary face-to-face interviews with 16 regional managers of the infective disease prevention departments. Subsequently, we sent them a standardized questionnaire to obtain comparable information on general organization and on the four specific vaccination programmes considered. In all, 14 regions were eventually included.

Results:

The survey showed a widespread lack of regional staff involved in the management of vaccinations and a geographical variation in the availability of computerized data collection. We recorded poor coverage for varicella and pneumococcal 23-valent vaccinations compared to MRP and influenza. Prices of the four vaccines varied widely among regions, with only a weak correlation between prices and volumes.

Limitations and conclusions:

The major limitation of the survey was the lack of information available at regional level. The piecemeal diffusion of computerized systems and the widespread lack of sufficient staff should mainly explain this.

Economic incentives could be offered to regions that achieve national targets. Such incentives should encourage collaboration between central and regional authorities consistent with institutional trends in regional devolution.     

The Productivity Slowdown Puzzle. Technological and Non-technological Shocks in the Labor Market

Abstract

In this paper we examine the relationships between business cycles in the G7 countries. We focus on whether recessionary periods in one country are independent of the timing of recessions in other countries in the G7, using three different methods for dating recessions. We find that the evidence is mixed on whether phases of the business cycle in North America and in European countries are independent, or whether there is a common phase structure in the business cycle across all the G7 economies. NBER dates suggest that business cycles are synchronised, while other methods for generating business cycle chronologies are more consistent with regional, rather than international cycles. We also find mixed evidence on whether the UK is synchronised with European countries, while Japan quite clearly has the cycle that is most independent of other G7 countries.     

Cost comparison of prostaglandin analogues: a Canadian population-based analysis

Abstract

Objectives: Glaucoma is a fairly common disease, however, little is known about the costs associated with prostaglandin analogues (PAs). The costs between the three available PAs (Lumigan® (bimatoprost), Xalatan® (latanoprost) and Travatan® (travoprost)) were compared as monotherapy and when adjunctive therapy was used.

Methods: From the Québec drug claims database, all patients who used these drugs for 1 full year were identified. From the Ministry of Health (MoH) perspective, the average cost for all reimbursed costs (drug costs and pharmacist fees) were calculated. Those costs plus the patient out-of-pocket copayments were used for the payer + user (PU) perspective.

Results: Data from 4,653 patients were analysed (3,606 on monotherapy and 1,047 on combination treatment with adjunctive therapy), 59.7% were females, and the average age was 72.6 ± 10.4 years. MoH perspective costs were $410 ± $167 for bimatoprost, $381 ± $145 for latanoprost and $298 ± $121 for travoprost (all differences p<0.001), for patients on monotherapy. Costs of combination treatment with adjunctive therapy were $786 ± $416, $686 ± $313, and $623 ± $521, respectively (travoprost significantly lower than each of the other two p<0.001, others=not significant). Results from the PU perspective were comparable.

Conclusions: Travoprost had the lowest cost, both as monotherapy and in conjunction with other glaucoma treatments. Further comparative pharmacoeconomic evaluation is warranted.     

Treatment patterns among patients with psoriasis using a large national payer database in the United States: a retrospective study

Aim: To characterize treatment patterns of psoriasis patients in a large US managed care database.

Materials and methods: Adults with newly-diagnosed psoriasis were identified from July 3, 2006–August 31, 2014. Patients had continuous enrollment with medical and pharmacy benefits for ≥6 months prior to and ≥1 year following the index date. The index date was the point at which any of the following inclusion criteria were satisfied: first psoriasis diagnosis by a dermatologist, ≥ 2 psoriasis diagnoses ≥30 days apart, or a diagnosis of psoriasis followed by a claim for psoriasis therapy. Of primary interest was to measure and describe the following psoriasis treatment patterns: utilization rates, time to treatment discontinuation, and lines of therapy for various therapeutic classes of pharmacologic therapies.

Results: From the 128,308 patients identified, 53% were female, mean?±?SD age was 50?±?16 years, with median 3 years follow-up. Topicals were received by 86% of patients, non-biologic systemics by 13%, biologics by 6%, phototherapy by 5%, and 13% received no psoriasis-related medication. Median time from index to first treatment was 0 days for topical, 6 months for non-biologic systemic, and 6 months for biologic. Of those treated, first-line therapies included topical (95%), non-biologic systemic (4%), and biologic (2%). For those with second-line treatment, non-biologic systemic (71%) and biologic (30%) therapies were more common. The most common treatment pattern was topicals only (83%), while all other patterns comprised <5% of the treatment patterns observed.

Limitations: Like other observational studies, limitations to consider when interpreting results include the 6-month pre-index period of no psoriasis or the psoriasis medication claim may not perfectly select only incident user of psoriasis medications, claims-based algorithms may not accurately represent true treatment patterns, absence of over-the-counter medications data, and having no trend analyses over time or between groups.

Conclusions: While the majority of patients with psoriasis initiated a pharmacological therapy, a significant portion did not have a claim for any psoriasis medication. Topical treatments are the most commonly used treatments for psoriasis. Non-biologic systemic and biologic therapies were rarely used first line, but became more common in later lines of treatment.     

Effects of patient-reported non-severe hypoglycemia on healthcare resource use,work-time loss,and wellbeing in insulin-treated patients with diabetes in seven European countries

Abstract

Purpose:

Hypoglycemia is a frequent side effect induced by insulin treatment of type 1 (T1DM) and type 2 diabetes (T2DM). Limited data exist on the associated healthcare resource use and patient impact of hypoglycemia, particularly at a country-specific level. This study investigated the effects of self-reported non-severe hypoglycemic events (NSHE) on use of healthcare resources and patient wellbeing.

Methods:

Patients with T1DM or insulin-treated T2DM diabetes from seven European countries were invited to complete four weekly questionnaires. Data were collected on patient demographics, NSHE occurrence in the last 7 days, hypoglycemia-related resource use, and patient impact. NSHE were defined as events with hypoglycemia symptoms, with or without blood glucose measurement, or low blood glucose measurement without symptoms, which the patient could manage without third-party assistance.

Results:

Three thousand, nine hundred and fifty-nine respondents completed at least one wave of the survey, with 57% completing all four questionnaires; 3827 respondents were used for data analyses. Overall, 2.3% and 8.9% of NSHE in patients with T1DM and T2DM, respectively, resulted in healthcare professional contact. Across countries, there was a mean increase in blood glucose test use of 3.0 tests in the week following a NSHE. Among respondents who were employed (48%), loss of work-time after the last hypoglycemic event was reported for 9.7% of NSHE. Overall, 10.2% (daytime) and 8.0% (nocturnal) NSHE led to work-time loss, with a mean loss of 84.3 (daytime) and 169.6 (nocturnal) minutes among patients reporting work-time loss. Additionally, patients reported feeling tired, irritable, and having negative feelings following hypoglycemia.

Limitations:

Direct comparisons between studies must be interpreted with caution because of different definitions of hypoglycemia severity, duration of the studies, and methods of data collection.

Conclusions:

NSHE were associated with use of extra healthcare resources and work-time loss in all countries studied, suggesting that NSHE have considerable impact on patients/society.     

Medication,equipment, and supply costs for common interventions providing extended post-surgical analgesia following total knee arthroplasty in US hospitals

Aims: To estimate the cost to hospitals of materials (i.e. medications, equipment, and supplies) required to administer common interventions for post-surgical analgesia after total knee arthroplasty (TKA), including single-injection peripheral nerve block (sPNB), continuous peripheral nerve block (cPNB), periarticular infiltration of multi-drug cocktails, continuous epidural analgesia, intravenous patient-controlled analgesia (IV PCA), and local infiltration of bupivacaine liposome injectable suspension (BLIS).

Materials and methods: This analysis was conducted using a mixed methods approach combining published literature, publicly available data sources, and administrative data, to first identify the materials required to administer these interventions, and then estimate the cost to the hospital of those materials. Medication costs were estimated primarily using the Wholesale Acquisition Costs (WAC), the cost of reusable equipment was obtained from published sources, and costs for disposable supplies were obtained from the US Government Services Administration (GSA) database. Where uncertainty existed about the technique used when administering these interventions, costs were calculated for multiple scenarios reflecting different assumptions.

Results: The total cost of materials (i.e. medications, equipment, and supplies) required to provide post-surgical analgesia was $41.88 for sPNB with bupivacaine; $756.57 for cFNB with ropivacaine; $16.38 for periarticular infiltration with bupivacaine, morphine, methylprednisolone, and cefuroxime; $453.84 for continuous epidural analgesia with fentanyl and ropivacaine; $178.94 for IV PCA with morphine; and $319.00 for BLIS.

Limitations: This analysis did not consider the cost of healthcare providers required to administer these interventions. In addition, this analysis focused on the cost of materials and, therefore, did not consider aspects of relative efficacy or safety, or how the choice of intervention for post-surgical analgesia might impact outcomes such as length of stay, re-admissions, discharge status, adverse events, or total hospitalization costs.

Conclusions: This study provided an estimate of the costs to hospitals for materials required to administer commonly used interventions for post-surgical analgesia after TKA.