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1.
J Econ Entomol ; 115(4): 1076-1086, 2022 08 10.
Article in English | MEDLINE | ID: mdl-35604375

ABSTRACT

Studies addressing the economic impacts of invasive alien species are biased towards ex-post assessments of the costs and benefits of control options, but ex-ante assessments are also required to deal with potentially damaging invaders. The polyphagous shot hole borer Euwallacea fornicatus (Coleoptera: Curculionidae) is a recent and potentially damaging introduction to South Africa. We assessed the potential impact of this beetle by working across economic and biological disciplines and developing a simulation model that included dynamic mutualistic relations between the beetle and its symbiotic fungus. We modeled the potential growth in beetle populations and their effect on the net present cost of damage to natural forests, urban trees, commercial forestry, and the avocado industry over 10 yr. We modeled high, baseline, and low scenarios using discount rates of 8, 6, and 4%, and a plausible range of costs and mortality rates. Models predicted steady growth in the beetle and fungus populations, leading to average declines in tree populations of between 3.5 and 15.5% over 10 yr. The predicted net present cost was 18.45 billion international dollars (Int. $), or about 0.66% of the country's GDP for our baseline scenario ($2.7 billion to $164 billion for low and high scenarios). Most of the costs are for the removal of urban trees that die as a result of the beetle and its fungal symbiont, as has been found in other regions. We conclude that an ex-ante economic assessment system dynamics model can be useful for informing national strategies on invasive alien species management.


Subject(s)
Coleoptera , Weevils , Animals , Coleoptera/microbiology , Forestry , Introduced Species , South Africa , Trees
2.
RMD Open ; 1(1): e000129, 2015.
Article in English | MEDLINE | ID: mdl-26509075

ABSTRACT

INTRODUCTION: Patient-reported outcomes (PROs) are important instruments to evaluate healthcare interventions, both in clinical practice and clinical research. OBJECTIVE: To describe how representation of the perspective of people with psoriatic arthritis was obtained through active participation on different levels in the development of PROs. METHODS: This case study focuses on the methods of involving patients in the elaboration and validation of the Psoriatic Arthritis Impact of Disease (PsAID) score. We used the concept of the participation ladder and the European League Against Rheumatism (EULAR) recommendations for the involvement of patient representatives in scientific projects to analyse the variety of ways patients participated in this process. RESULTS: Two patient experts were part of the steering group. 12 patient research partners, coming from 12 different European countries, participated in identifying domains, formulating items for the questionnaire and determining the number of items, the recall period and the questionnaire format. They also helped with the translation of the items into different European languages. Then, 139 patients took part in ranking and prioritising the domains for importance; 65 patients were involved in cognitive debriefing interviews; 499 new patients were recruited for the validation study. Challenges of patient participation in PRO development, such as the representation of patients, are discussed. CONCLUSIONS: Making patient participation an integral part of the PRO development and validation process is an important requisite for outcome research. The variety of patient contributions at different phases in this case study resulted in an instrument with high face validity.

3.
J Environ Manage ; 120: 138-47, 2013 May 15.
Article in English | MEDLINE | ID: mdl-23524327

ABSTRACT

Can markets assist by providing support for ecological restoration, and if so, under what conditions? The first step in addressing this question is to develop a consistent methodology for economic evaluation of ecological restoration projects. A risk analysis process was followed in which a system dynamics model was constructed for eight diverse case study sites where ecological restoration is currently being pursued. Restoration costs vary across each of these sites, as do the benefits associated with restored ecosystem functioning. The system dynamics model simulates the ecological, hydrological and economic benefits of ecological restoration and informs a portfolio mapping exercise where payoffs are matched against the likelihood of success of a project, as well as a number of other factors (such as project costs and risk measures). This is the first known application that couples ecological restoration with system dynamics and portfolio mapping. The results suggest an approach that is able to move beyond traditional indicators of project success, since the effect of discounting is virtually eliminated. We conclude that systems dynamic modelling with portfolio mapping can guide decisions on when markets for restoration activities may be feasible.


Subject(s)
Conservation of Natural Resources/methods , Environmental Monitoring/methods , Models, Theoretical , Risk Assessment , South Africa
4.
BMJ ; 344: e256, 2012 Jan 27.
Article in English | MEDLINE | ID: mdl-22286508

ABSTRACT

Although many clinicians feel they already use shared decision making, research shows a perception-reality gap. A M Stiggelbout and colleagues discuss why it is important and highlight some best practices.


Subject(s)
Decision Making , Patient Participation/psychology , Patient-Centered Care/organization & administration , Physician-Patient Relations , Attitude to Health , Delivery of Health Care/methods , Delivery of Health Care/standards , Humans
5.
Ann Rheum Dis ; 70(6): 891-5, 2011 Jun.
Article in English | MEDLINE | ID: mdl-21478190

ABSTRACT

To transcribe the treat-to-target (T2T) recommendations into a version that can be easily understood by patients. A core group of physicians and patients involved in the elaboration of the T2T recommendations produced a draft version of the T2T recommendations in lay language. This version was discussed, changed and reworded during a 1-day meeting with nine patients with rheumatoid arthritis (RA) from nine different European countries. Finally, the level of agreement with the translation and with the content of the recommendations was assessed by the patient participants. The project resulted in a patient version of the T2T recommendations. The level of agreement with the translation and the content was high. The group discussion revealed a number of potential barriers for the implementation of the recommendations in clinical practice, such as inequalities in arthritis healthcare provision across Europe. An accurate version of the T2T recommendations that can be easily understood by patients is available and can improve the shared decision process in the management of RA.


Subject(s)
Antirheumatic Agents/therapeutic use , Arthritis, Rheumatoid/drug therapy , Patient Participation , Practice Guidelines as Topic , Europe , Humans , International Cooperation , Language , Severity of Illness Index , Terminology as Topic , Treatment Outcome
6.
Ann Rheum Dis ; 70(5): 722-6, 2011 May.
Article in English | MEDLINE | ID: mdl-21257615

ABSTRACT

OBJECTIVE: To develop recommendations to enable successful inclusion of the patient perspective in European League Against Rheumatism (EULAR)-funded scientific research projects. METHODS: The EULAR standardised operational procedures for guideline development were followed. A systematic literature review was presented during a first task force meeting, including 3 rheumatologists, 1 rheumatologist/epidemiologist, 2 allied health professionals, 2 representatives of arthritis research organisations and 7 patient representatives, resulting in 38 statements. A Delphi method was carried out to reduce and refine the statements and agree on a set of eight. Next, a survey among a wider group of experts, professionals and patient representatives (n=42), was completed. Feedback from this wider group was discussed at the second meeting and integrated in the final wording of the recommendations. Subsequently, the level of agreement of the group of experts (n=81) was re-evaluated. RESULTS: The project resulted in a definition of patient research partner and agreement on a set of eight recommendations for their involvement in research projects. These recommendations provide practical guidance for organising patient participation, capturing (1) the role of patient research partners, (2) phase of involvement, (3) the recommended number, (4) recruitment, (5) selection, (6) support, (7) training and (8) acknowledgement. CONCLUSION: Collaboration between patients and professionals in research is relatively new. Trials or effectiveness studies are not yet available. Nevertheless, it is possible to define recommendations for the inclusion of patients in research following a solid expert opinion based consensus process.


Subject(s)
Biomedical Research/organization & administration , Patient Advocacy , Europe , Evidence-Based Medicine/methods , Humans , Patient Advocacy/education , Patient Selection , Practice Guidelines as Topic , Professional-Patient Relations
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