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Antimicrobial resistance (AMR) has become a worldwide growing concern over the past decades. Thus, encouraging manufacturers to develop new antibiotics is needed. We hypothesised that transparency on the regulatory appraisals of antibiotics would provide an incentive to pharmaceutical development. We thus aimed at reporting the French health technology assessment (HTA) opinions and reimbursement decision on antibiotics to those German (G-BA) and English (NICE) HTA bodies.
A qualitative analysis of the Transparency Committee of the French National Authority for Health (TC-HAS) opinions regarding antibiotics assessment between 2016 and 2020 was performed. Decisions of reimbursement by TC-HAS were compared to those from G-BA and NICE when available. TC-HAS recognized a clinical benefit (CB) for 15/15 evaluated indications, a clinical added value for 9/15, and a public health interest for 8/15. Among the valued antibiotics by HAS, 5 were recommended for restricted use as a “reserve” to protect against the risk of resistance emergence. A comparison of HTA opinions was possible across HTA for only 8 antibiotics. The G-BA granted a reserve status for 4 drugs and NICE a reserve with restricted use for 5 antibiotics. Three of these antibiotics were positioned similarly by the English, German, and French HTA bodies. This qualitative analysis of HTA opinions between different European HTA bodies shows a consistent reimbursement decision of antibiotics against MDR bacteria and tuberculosis besides the differences in the applied assessment methods. This work also shows how HTA bodies could recognize a clinical added value in a context of the emergence of antibiotic resistance.
Structural Fe3+ in kaolinites and dickites covering a broad range of disorder was investigated using electron paramagnetic resonance (EPR) spectroscopy at both the X and Q-band frequencies. A procedure based on a numerical diagonalization of the spin Hamiltonian was used to accurately determine the second and fourth-order fine-structure parameters. A least-squares fitting method was also developed to model the EPR spectra of Fe3+ ions in disordered local environments, including multimodal site-to-site distributions. Satisfactory fits between calculated and observed X and Q-band spectra were obtained regardless of the stacking order of the samples.
In well-ordered kaolinite, Fe3+ ions are equally substituted in sites of axial symmetry (Fe(II)sites, namely Fe(II)a and Fe(II)b) which were determined to be the two non-equivalent Al1 and Al2 sites of the kaolinite structure. In dickite, Fe3+ ions were also found to be equally substituted for Al3+ in the two non-equivalent Al sites of the dickite structure. In poorly ordered kaolinites, the distribution of the fine-structure parameters indicates that Fe3+ ions are distributed between Fe(II) sites and other sites with the symmetry of the dickite sites.
Hence, when stacking disorder prevails over local perturbations of the structure, the near isotropic resonance owing to Fe3+ ions in rhombically distorted sites (Fe(I) sites) is a diagnostic feature for the occurrence of C-layers in the kaolinite structure, where C refers to a specific distribution of vacant octahedral sites in successive layers.
A method is proposed to measure the absolute concentration of paramagnetic Fe3+ ions in kaolinite from various geochemical environments using powder X-band electron paramagnetic resonance (EPR) data. An Fe3+-doped corundum sample is used as a concentration standard. The Fe3+ signal is calibrated by calculating the powder EPR spectra of Fe3+ ions in corundum and low-defect kaolinite. The paramagnetic Fe3+ concentration in other samples is obtained by an extrapolation procedure. This study provides a direct assessment of the iron distribution between isolated structural Fe3+ ions and other iron species, such as Fe3+ concentrated phases and Fe2+ ions. The concentration of isolated structural Fe3+ ranges between 200–3000 ppm and represents less than half of the total iron within kaolinite crystals.
The history of French Sinology—that is, of scholarly research on things Chinese by French-speaking authors working from Chinese sources—goes back to the seventeenth century and can be divided into several periods determined in large part by sociopolitical factors, and marked by different approaches and emphases: I propose to describe them as the missionary age (seventeenth–eighteenth centuries); the first academic efflorescence (nineteenth century); the advent of field research and the impact of colonialism and the social sciences (first half of twentieth century); and the postwar era of specialization and internationalization (second half of twentieth century), which marked the end of a certain French domination of Chinese studies in the West.1
In the spring of 1760, the controller-general of finances of the kingdom of France, Henri Léonard Jean-Baptiste Bertin (1720–1792) received an alarming report on the devastation caused by an infestation of insect pests in the wheat fields of the western province of Angoumois. Christophe Pajot de Marcheval (1724–1792), the intendant of the généralité of Limoges, informed Bertin that the crops in Angoumois had been devastated for several successive years by an insect that consumed the grain on the stalk before the harvest, leaving the inhabitants of the province without sustenance and unable to pay their taxes. Even more cause for alarm was that these insects were ‘spreading with fury in neighbouring jurisdictions’, and had already begun to advance upon the neighbouring provinces of Poitou, Aunis and Saintonge. Fearing that this ‘contagion might spread throughout the kingdom’, Bertin summoned two naturalists from the Académie Royale des Sciences, Henri-Louis Duhamel du Monceau (1700–1782) and Mathieu Tillet (1714–1791), both of whom had prior experience of the study of agricultural blights, and instructed them to travel to Angoumois in order to ‘conduct the investigations necessary for putting an end to this calamity’.
Often described as poor, isolated and backward by historians of ancien régime France, in fact the province of Angoumois underwent a period of accelerated economic development and integration in the period that preceded the mid-century reforms of the intendant Anne-Robert-Jacques Turgot (1727–1781). Farmers in Angoumois devoted an increasing proportion of their labour to the commercial cultivation of wheat. The construction of a dense network of roads between 1715 and 1760 connected rural settlements in the province to other localities within the généralité of Limoges and beyond, spurring the development of a carefully regulated, but brisk trade with the surrounding cereal-deficient provinces. Yet the extension of commercial wheat cultivation and the multiplication of trade networks, as Duhamel du Monceau and Mathieu Tillet came to recognize, provided favourable material conditions for the proliferation and spread of invasive insects like the Angoumois grain moth (Sitotroga cerealella).
The Desert Andes contain >4500 ice masses, but only a handful are currently being monitored. We present the mass changes of the small mountain glacier Agua Negra (1 km2) and of the rest of glaciers in the Jáchal river basin. Remote-sensing data show Agua Negra glacier lost 23% of its area during 1959–2019. Glaciological measurements during 2014–2021 indicate an average annual mass balance of −0.52 m w.e. a−1, with mean winter and summer balances of 0.80 and −1.33 m w.e. a−1, respectively. The Equilibrium Line Altitude (ELA) is estimated to be 5100 ± 100 m a.s.l., which corresponds to an Accumulation Area Ratio (AAR) of 0.28 ± 0.21. Geodetic data from SRTM X and Pléiades show a doubling of the loss rate from −0.32 ± 0.03 m w.e. a−1 in 2000–2013, to −0.66 ± 0.06 m w.e. a−1 in 2013–2019. Comparatively, the ice losses for the entire Jáchal river basin (25 500 km2) derived from ASTER show less negative values, −0.11 ± 16 m w.e. a−1 for 2000–2012 and −0.23 ± 14 m w.e. a−1 for 2012–2018. The regional warming trend since 1979 and a recent decline in snow accumulation are probably driving the observed glacier mass balance.
We use PRISM climatic data (1981–2010) and Landsat images (2012–2013) to establish an empirical relationship linking annual temperature and precipitation to the equilibrium line altitude (ELA) of glaciers in the Sierra Nevada (36–41°N, California, USA). For this, we determined the present-day ELAs of 57 glaciers and the local 0°C isotherms elevation Iso0, averaged over the 1981–2010 period. The difference, for each glacier, is Y, the normalized snowline altitude (Y = ELA – Iso0). We then empirically calibrated a logarithmic relationship between this normalized snowline altitude and mean annual precipitation using data from partially covered glaciers. Our calibration is statistically distinct from that previously established for the tropical and midlatitude Andes (Fox and Bloom [1994], Journal of Geography (Chigaku Zasshi), 103, 867–885; Condom et al. [2007], Global and Planetary Change, 59, 189–202). This new relationship for North America is an easy-to-use tool to permit paleoclimatic reconstructions from paleo-ELAs. For a specific paleoglacial site, paleotemperature can be computed knowing the paleoprecipitation range, and vice versa. We also performed a test showing that, if precipitation is well known, the uncertainty associated with paleotemperature is about 1°C (1σ).
To describe the type and level of ethical integration in published health technology assessment (HTA) reports and systematically identify the ethical approaches utilized.
Methods
A literature search was conducted with the Google™ search engine using the keyword “ethic” between 1 January 2015 and 20 August 2019. Only HTA assessment reports with a section on ethics were retained and classified according to their level of ethical integration: no ethical analysis, ethical issues highlighted, assessments according to legal or social norms, and assessments from a moral or axiological perspective—using a qualitative methodology to distinguish such integration.
Results
This review yielded 188 reports with a section identified as being on ethics, produced by seventeen HTA agencies in eleven countries. One hundred and thirty-six reports did not develop an ethical analysis, thirty-one highlighted ethical issues, seventeen conducted a norm-based ethical assessment using a descriptive approach grounded in social norms, and four developed an assessment grounded in a moral or axiological perspective. The bioethical “four-principles” framework was used, but mainly for presenting ethical issues and not as a moral framework.
Conclusions
The majority of reports featuring a section on ethics mention ethical considerations without ethical analysis. Ethical issues are grouped with legal, social, and organizational issues and treated as contextual considerations that decision makers should be aware of. When reports present systematic norm-based ethical assessments from a descriptive perspective or ethical assessment based on a moral or axiological perspective, there is a tendency to ground these analyses in frameworks created for the purpose and reliant on a concept of ethics supporting them.
Integration of ethics into technology assessment in healthcare (HTA) reports is directly linked to the need of decision makers to provide rational grounds justifying their social choices. In a decision-making paradigm, facts and values are intertwined and the social role of HTA reports is to provide relevant information to decision makers. Since 2003, numerous surveys and discussions have addressed different aspects of the integration of ethics into HTA. This study aims to clarify how HTA professionals consider the integration of ethics into HTA, so an international survey was conducted in 2018 and the results are reported here.
Methods
A survey comprising twenty-two questions was designed and carried out from April 2018 to July 2018. Three hundred and twenty-eight HTA agencies from seventy-five countries were invited to participate in this survey.
Results
Eighty-nine participants completed the survey, representing a participation rate of twenty-seven percent. As to how HTA reports should fulfill their social role, over 84 percent of respondents agreed upon the necessity to address this role for decision makers, patients, and citizens. At a lower level, the same was found regarding the necessity to make value-judgments explicit in different report sections, including ethical analysis. This contrasts with the response-variability obtained on the status of ethical analysis with the exception of the expertise required. Variability in stakeholder-participation usefulness was also observed.
Conclusions
This study reveals the importance of a three-phase approach, including assessment, contextual data, and recommendations, and highlights the necessity to make explicit value-judgments and have a systematic ethical analysis in order to fulfill HTA's social role in guiding decision makers.
After surveying its members on ethical issues (2003), the International Network of Agencies for Health Technology Assessment (INAHTA) mandated its Ethics Working Group (2005) to reflect on the role of health technology assessment (HTA) organizations in meeting social expectations. Some aspects of these have since been clarified by two studies addressing either the official position of INAHTA's members or the publication authors. An international survey was carried out on the perception of HTA professionals’ expectations when producing HTA reports: how to fulfil HTA's social role, which value judgments should be made explicit and what should be the status of ethical analysis.
Methods
A twenty-two question, web-based, anonymous survey was devised from our recent systematic review on the integration of ethics into HTA and carried from April to July 2018. The information on 328 HTA agencies/contact persons from seventy-five countries was collected from the website of INAHTA, Health Technology Assessment International (HTAi), the European Network for Health Technology Assessment (EUnetHTA), EuroScan International Network, the HTA Network of the Americas (RedETSA) and the HTA Network of Asia (HTAsiaLink), a 2015 World Health Organization survey, HTAi members, and our local HTA network (Québec, Canada).
Results
Eighty-nine participants completed and submitted a finalized survey for a 27 percent participation rate representing thirty-three countries. Regarding how the HTA reports should fulfil their social role, our results showed that over 84 percent of the respondents agreed upon the necessity to address it to decision makers, patients and citizens. At a lower and more variable level, the same result was found about the necessity to make value judgements explicit in different sections of the report, including ethical analysis. This contrasts with the variability of responses obtained on the status of ethical analysis although an agreement on the expertise required was observed. Variability in the usefulness of patient, public or stakeholder participation was observed.
Conclusions
At the dawn of this decade, this study reveals high expectations on context-dependent decisions in HTA: the necessity to integrate the ‘explicitation’ of value judgements and systematic ethical analysis to fulfil HTA's social role.
During the 2014–2016 Ebola epidemic in West Africa, some communities reacted hostilely to the implementation of quarantine measures. This study's aim was to examine the views of lay people in Guinea on the acceptability of community quarantine. From June to August 2016, 302 adults indicated the acceptability of quarantine in 36 scenarios varying as a function of four factors: the infectious disease's level of contagiousness, its level of lethality, the number of cases in the community and whether persons in quarantine are provided with support services. Five clusters were identified: (1) for 18% of the participants, quarantine is never acceptable; (2) 16% considered, in contrast, that quarantine is always acceptable; (3) for 14%, it depends on the disease's level of contagiousness and lethality; (4) 36% based their judgement not only on the levels of contagiousness and lethality, but also on whether those in quarantine are provided with support services; and (5) 16% had no opinion. Interventions to increase voluntary compliance with community quarantine in Guinea must not be ‘one size fits all’, but must be multifaceted and tailored in design and implementation to match the diversity of people's concerns and needs.
The fact that HTA is a value-laden process is recognized in the literature. This is one of the reasons for promoting a better integration of ethics in HTA processes. Although what is meant by value-judgment (VJ) and how it can be used in HTA is not clear for some authors; others have proposed the elicitation of implicit VJs, to make them more explicit, as one way for clarifying the role ethics may play in HTA. In order to clarify what a VJ is, a conceptual analysis is needed to distinguish it from a factual-judgment and see how they diverge on certain aspects and converge on others.
Methods:
The distinction between VJs and factual-judgments was debated in the fifties. At the core of the philosophy of language was a distinction between factual-scientific assertions about facts, considered objective, and VJs on what is right/wrong-good/bad, considered subjective. In speech-act theory these distinctions were treated as two different operations: assertive and evaluative. A conceptual analysis of VJs, considering them as specific speech-acts, was used for clarifying/deciphering the role of VJs in HTA.
Results:
VJs are intrinsically embedded in decision-making since they are the reasons justifying decisions. This is why implicit VJs can be identified at every decision-step in the HTA process. Assessment is usually considered objective while appraisal seems subjective. Since VJs are entrenched in the decisions taken throughout the assessment process, the results are not completely objective. Ethical analysis also distinguishes two types of VJs, those based on normative criteria and those based on various degrees of value actualization. Furthermore, since evaluation requires criteria based on a rational process, VJs are not totally subjective.
Conclusions:
Elicitation of VJs in HTA is one way of integrating ethics in HTA and offers decision-makers a more thorough picture of the ethical issues involved in their decision.
Eliciting implicit value-judgments (VJs) in the HTA process is one way of integrating ethics in HTA since the latter is recognized as a value-laden process. An analysis of the diversity of opinions on implicit VJs in HTA and of their role, highlights the connection there exists between VJs and the different decisions involved in the whole HTA process. Such a link is corroborated by a conceptual analysis of VJ using a speech-act philosophical approach grounded in the philosophy of language, since VJs are linked with normative speech-acts such as commands, recommendations and advices.
Methods:
We propose an analysis of the published citations mentioning VJs, extracted from our systematic review on the challenges of integrating ethics in HTA. In order to do so, those quotes were categorized in a chart, the latter of which presents: (i) the different steps of decision-making in the HTA process, (ii) the description of the implicit VJ(s) and (iii) the criteria involved. This chart was elaborated with the participation of the HTA local evaluators involved as co-investigators in our research group. The final version was discussed, debated and validated by the entire research group.
Results:
The chart shows 18 decision-making steps in the HTA process in which twenty-three implicit VJs can be observed. The range of such VJs encompasses the whole HTA process from the initial mandate to the agency presenting the decisional issues, to the dissemination of the final report. The published citations gathered for each category compile different expectations on the elicitation of the implicit VJs, thus making the latter VJs more explicit.
Conclusions:
This chart allows a better understanding of the expectations that are at the core of the appeal for more transparency in the HTA process, since stakeholders need to understand which value-judgments the final conclusion of a report is relying on.
Integration of ethics into health technology assessment (HTA) remains challenging for HTA practitioners. We conducted a systematic review on social and methodological issues related to ethical analysis in HTA. We examined: (1) reasons for integrating ethics (social needs); (2) obstacles to ethical integration; (3) concepts and processes deployed in ethical evaluation (more specifically value judgments) and critical analyses of formal experimentations of ethical evaluation in HTA.
Methods:
Search criteria included “ethic,” “technology assessment,” and “HTA”. The literature search was done in Medline/Ovid, SCOPUS, CINAHL, PsycINFO, and the international HTA Database. Screening of citations, full-text screening, and data extraction were performed by two subgroups of two independent reviewers. Data extracted from articles were grouped into categories using a general inductive method.
Results:
A list of 1,646 citations remained after the removal of duplicates. Of these, 132 were fully reviewed, yielding 67 eligible articles for analysis. The social need most often reported was to inform policy decision making. The absence of shared standard models for ethical analysis was the obstacle to integration most often mentioned. Fairness and Equity and values embedded in Principlism were the values most often mentioned in relation to ethical evaluation.
Conclusions:
Compared with the scientific experimental paradigm, there are no settled proceedings for ethics in HTA nor consensus on the role of ethical theory and ethical expertise hindering its integration. Our findings enable us to hypothesize that there exists interdependence between the three issues studied in this work and that value judgments could be their linking concept.
One of the barriers of integrating ethics in Health Technology Assessment (HTA) relates to the social role of HTA (1). The aim of this study is to provide a better understanding of the way by which law circumscribes the social role of HTA. Our hypothesis: HTA's social role is embedded within a mixed governance based on hard law and soft law.
METHODS:
Three HTA agencies were conveniently selected for our study: Haute Autorité de santé (HAS) (France), National Institute for Health and Care Excellence (NICE) (United Kingdom) and Institut national d'excellence en santé et en services sociaux (INESSS) (Québec, Canada). Our analysis of the legal, administrative and procedural documents relating to the existence and assessment processes of these three agencies is guided by the following criteria:
1. The normative strength of the documents (categories of hard law or soft law) (2)
2. The definition of the agencies’ social role (1)
3. The integration of ethics in the agencies’ mandate.
RESULTS:
Hard law contributes to establish a general mandate and some legal legitimacy for these agencies. Soft law, grounded in the HTA producers' practices, plays a major role in the legal governance of HTA. Our results demonstrate that these agencies existing practices seem to circumscribe their social role further than their constitutive laws. In this context, social actors become responsible to define, structure and operationalize the implementation of HTA.
In addition, the legal framework (hard law) through which HTA unfolds does not clearly support its structural and social role. Despite existing legal frameworks, the normative legitimacy of HTA is not entirely established, as it depends on soft law. Taken altogether, this maintains a persisting conceptual vagueness in HTA governance.
CONCLUSIONS:
The social role of HTA should be defined either through modifying existing legislations (hard law) or through harmonization of the agencies internal policies and regulations (soft law). Such legal initiatives would help clarify the aims of HTA evaluations: assessments (scientific) or appraisal (value-laden), and therefore give a clearer indication on how best to integrate ethics in HTA.
The main difficulties encountered in the integration of ethics in Health Technology Assessment (HTA) were identified in our systematic review. In the process of analyzing these difficulties we then addressed the question of the diversity of ethical approaches (1) and the difficulties in their operationalization (2,3).
METHODS:
Nine ethical approaches were identified: principlism, casuistry, coherence analysis, wide reflexive equilibrium, axiology, socratic approach, triangular method, constructive technology assessment and social shaping of technology. Three criteria were used to clarify the nature of each of these approaches:
1. The characteristics of the ethical evaluation
2. The disciplinary foundation of the ethical evaluation
3. The operational process of the ethical evaluation in HTA analysis.
RESULTS:
In HTA, both norm-based ethics and value-based ethics are mobilized. This duality is fundamental since it proposes two different ethical evaluations: the first is based on the conformity to a norm, whereas the second rests on the actualization of values. The disciplinary foundation generates diversity as philosophy, sociology and theology propose different justifications for ethical evaluation. At the operational level, ethical evaluation's characteristics are applied to the case at stake by specific practical reasoning. In a norm-based practical reasoning, one must substantiate the facts that will be correlated to a moral norm for clearly identifying conformity or non-conformity. In value-based practical reasoning, one must identify the impacts of the object of assessment that will be subject to ethical evaluation. Two difficulties arise: how to apply values to facts and prioritize amongst conflicting ethical evaluations of the impacts?
CONCLUSIONS:
Applying these three criteria to ethical approaches in HTA helps understanding their complexity and the difficulty of operationalizing them in HTA tools. The choice of any ethical evaluations is never neutral; it must be justified by a moral point of view. Developing tools for ethics in HTA is operationalizing a specific practical reasoning in ethics.
The objective was to identify the conceptual and methodological issues surrounding integration of ethics in Health Technology Assessment (HTA). We conducted a systematic review examining: (i) social needs, (ii) methodological and procedural barriers, (iii) concepts or processes of ethics assessment used and (iv) results of experimentations for integrating ethics in HTA.
METHODS:
Search criteria included ‘ethic’, ‘technology assessment’ and ‘HTA’. The literature search was done up to 21 November 2016 in Medline/Ovid, SCOPUS, CINAHL, PsycINFO and international HTA Database. Screening of citations, screening of full-text and data extraction were performed by two subgroups of two independent reviewers. The first group was constituted of HTA experts, and the second of ethics and philosophy experts. Data extracted from articles were regrouped in categories for each objective.
RESULTS:
A list of 2,420 citations was obtained while 1,646 remained after the removal of duplicates. Of these, 132 were fully reviewed, yielding 67 eligible articles for analysis. Eight categories were identified within the social needs. The mostly evoked were ‘Informed policy decision making’ (n = 16) and 'Informed public/patient decision making’ (n = 12). Ten categories of methodological and procedural barriers were identified. The most mentioned were 'Lack of standardized and recognized proceedings for ethical analysis’ (n = 28) and ‘Lack of shared consensus on the role of ethical theory and ethical expertise’ (n = 17). Within the concepts or processes of ethics assessment, thirteen categories were identified. The most mentioned were ‘Fairness and Equity’ (n = 12), ‘Beneficence and Non-maleficence’ (n = 10) and, ‘Autonomy’ (n = 10). Within results of experimentations, five categories were identified. The most mentioned was ‘Usefulness of ethics for identifying relevant problems’ (n = 3). While few experimentations were identified, no clear operational method was found in our research.
CONCLUSIONS:
This study confirms the necessity to design an operational method integrating ethics and addressing social needs of HTA. Our results constitute the basis for developing a new theoretical and practical method.
In this paper, two-dimensional direct numerical simulations (DNS) of dense clouds moving down steep slopes are presented for the first time. The results obtained are in good agreement with the overall characteristics, i.e. the spatial growth rate and velocity variations, of clouds studied in the laboratory. In addition to the overall flow structure, DNS provide local density and velocity variations inside the cloud, not easily accessible in experiments. The validity of two-dimensional simulations as a first approach is confirmed by the dynamics of the flow and by comparison with experimental results. The interest of the results for powder-snow avalanches is discussed; it is concluded that two-dimensionality is acceptable and that large density differences need to be taken into account in future simulations.