15 results on '"De Hoyos, C."'
Search Results
2. Strength and uncertainty of phytoplankton metrics for assessing eutrophication impacts in lakes
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Carvalho, L., Poikane, S., Lyche Solheim, A., Phillips, G., Borics, G., Catalan, J., De Hoyos, C., Drakare, S., Dudley, B. J., Järvinen, M., Laplace-Treyture, C., Maileht, K., McDonald, C., Mischke, U., Moe, J., Morabito, G., Nõges, P., Nõges, T., Ott, I., Pasztaleniec, A., Skjelbred, B., and Thackeray, S. J.
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- 2013
- Full Text
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3. Diatom and desmid relationships with the environment in mountain lakes and mires of NW Spain
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Negro, A.I., De Hoyos, C., and Aldasoro, J.J.
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- 2003
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4. Directive Cadre Européenne sur l'Eau Rapport technique d'intercalibration : méthodes d'évaluation de l'état écologique des lacs méditerranéens par le phytoplancton
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De Hoyos, C., Catalan, J., Dörflinger, G., Ferreira, Joël, Kemitzoglou, D., Laplace-Treyture, Christophe, Pahissa López, J., Marchetto, Aldo, Mihail, O., Morabito, G., Polykarpou, P., Romão, F., Tsiaoussi, V., Poikane, Sandra, CENTRE FOR HYDROGRAPHIC STUDIES MADRID ESP, Partenaires IRSTEA, Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), CENTER FOR ADVANCED STUDIES OF BLANES ESP, WATER DEVELOPMENT DEPARTMENT CYPRUS CYP, PORTUGUESE ENVIRONMENTAL AGENCY PRT, THE GOULANDRIS NATURAL HISTORY MUSEUM EKBY THESSALONIKI GRC, Ecosystèmes aquatiques et changements globaux (UR EABX), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), DEPARTMENT OF BOTANY THESSALONIKI GRC, ISTITUTO PER LO STUDIO DEGLI ECOSISTEMI CNR PALLANZA ITA, NATIONAL INSTITUTE FRO RESEARCH AND DEVELOPMENT ENVIRONMENTAL PROTECTION ICIM BUCHAREST ROM, and JOINT RESEARCH CENTRE ISPRA ITA
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[SDE]Environmental Sciences ,COMPARAISON DE METRIQUE ,MEDITERRANEE - Abstract
One of the key actions identified by the Water Framework Directive (WFD; 2000/60/EC) is to develop ecological assessment tools and carry out a European intercalibration (IC) exercise. The aim of the Intercalibration is to ensure that the values assigned by each Member State to the good ecological class boundaries are consistent with the Directive’s generic description of these boundaries and comparable to the boundaries proposed by other MS. In total, 83 lake assessment methods were submitted for the 2nd phase of the WFD intercalibration (2008-2012) and 62 intercalibrated and included in the EC Decision on Intercalibration (EC 2013). The intercalibration was carried out in the 13 Lake Geographical Intercalibration Groups according to the ecoregion and biological quality element. In this report we describe how the intercalibration exercise has been carried out in the Mediterranean Lake Phytoplankton group.
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- 2014
5. Guidance document on sampling, analysis and counting standards for phytoplankton in lakes: WISER Deliverable D3.1-4
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Mischke, U., Thackeray, S., Dunbar, M., Mac Donald, C., Carvalho, L., De Hoyos, C., Järvinen, M., Laplace-Treyture, Christophe, Morabito, G., Skjelbred, B., Lyche Solheim, A., Brierley, B., Dudley, B., LEIBNIZ INSTITUTE OF FRESHWATER ECOLOGY AND INLAND FISHERIES BERLIN DEU, Partenaires IRSTEA, Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), CENTRE FOR ECOLOGY AND HYDROLOGY LANCASTER GBR, CENTRE FOR ECOLOGY AND HYDROLOGY WALLINGFORD GBR, CENTRE FOR ECOLOGY AND HYDROLOGY PENICUIK GBR, NATURAL ENVIRONMRNT RESEARCH COUNCIL CENTRE FOR ECOLOGY AND HYDROLOGY OXFORD GBR, CENTRO DE ESTUDIOS HIDROGRAFICOS DEL CEDEX MADRID ESP, SYKE FINNISH ENVIRONMENT INSTITUTE JYVASKYLA FIN, Réseaux épuration et qualité des eaux (UR REBX), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), INSTITUTE FOR ECOSYSTEM STUDIES ROMA ITA, NORSK INSTITUTT FOR VANNFORSKNING OSLO NOR, Norwegian Institute for Water Research (NIVA), ENVIRONMENT AGENCY LEEDS GBR, Européen (appel d'offres international), irstea, and Project co-funded by the European Commission within the Seventh Framework Programme (2007-2013)
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EUROPE ,[SDE]Environmental Sciences - Abstract
Sampling, analysis and counting of phytoplankton has been undertaken in European lakes for more than 100 years (Apstein 1892, Lauterborn 1896, Lemmermann 1903, Woloszynska 1912, Nygaard 1949). Since this early period of pioneers, there has been progress in the methods used to sample, fix, store and analyse phytoplankton. The aim of the deliverable D3.1-4 is to select, harmonize and recommend the most optimal method as a basis for lake assessment. We do not report and review the huge number of European national methods or other published manuals for phytoplankton sampling and analysis that are available.
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- 2012
6. An evaluation of algorithms for the remote sensing of cyanobacterial biomass
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Ruiz-Verdú, A., Simis, S.G.H., de Hoyos, C., Gons, H.J., Peña-Martínez, R., Ruiz-Verdú, A., Simis, S.G.H., de Hoyos, C., Gons, H.J., and Peña-Martínez, R.
- Abstract
Most remote sensing algorithms for phytoplankton in inland waters aim at the retrieval of the pigment chlorophyll a (Chl a), as this pigment is a useful proxy for phytoplankton biomass. More recently, algorithms have been developed to quantify the pigment phycocyanin (PC), which is characteristic of cyanobacteria, a phytoplankton group of relative importance to inland water management due to their negative impact on water quality in response to eutrophication. We evaluated the accuracy of three published algorithms for the remote sensing of PC in inland waters, using an extensive database of field radiometric and pigment data obtained in the Netherlands and Spain in the period 2001–2005. The three algorithms (a baseline, single band ratio, and a nested band ratio approach) all target the PC absorption effect observed in reflectance spectra in the 620 nm region. We evaluated the sensitivity of the algorithms to errors in reflectance measurements and in All algorithms performed best in moderate to high PC concentrations (50–200 mg m− 3) and showed the most linear response to increasing PC in cyanobacteria-dominated waters. The highest errors showed at PC <50 mg m− 3. In eutrophic waters, the presence of other pigments explained a tendency to overestimate the PC concentration. In oligotrophic waters, negative PC predictions were observed. At very high concentrations (PC > 200 mg m− 3), PC underestimations by the baseline and single band ratio a, Most remote sensing algorithms for phytoplankton in inland waters aim at the retrieval of the pigment chlorophyll a (Chl a), as this pigment is a useful proxy for phytoplankton biomass. More recently, algorithms have been developed to quantify the pigment phycocyanin (PC), which is characteristic of cyanobacteria, a phytoplankton group of relative importance to inland water management due to their negative impact on water quality in response to eutrophication. We evaluated the accuracy of three published algorithms for the remote sensing of PC in inland waters, using an extensive database of field radiometric and pigment data obtained in the Netherlands and Spain in the period 2001–2005. The three algorithms (a baseline, single band ratio, and a nested band ratio approach) all target the PC absorption effect observed in reflectance spectra in the 620 nm region. We evaluated the sensitivity of the algorithms to errors in reflectance measurements and in All algorithms performed best in moderate to high PC concentrations (50–200 mg m− 3) and showed the most linear response to increasing PC in cyanobacteria-dominated waters. The highest errors showed at PC <50 mg m− 3. In eutrophic waters, the presence of other pigments explained a tendency to overestimate the PC concentration. In oligotrophic waters, negative PC predictions were observed. At very high concentrations (PC > 200 mg m− 3), PC underestimations by the baseline and single band ratio a
- Published
- 2008
7. Strength and uncertainty of phytoplankton metrics for assessing eutrophication impacts in lakes
- Author
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Carvalho, L., primary, Poikane, S., additional, Lyche Solheim, A., additional, Phillips, G., additional, Borics, G., additional, Catalan, J., additional, De Hoyos, C., additional, Drakare, S., additional, Dudley, B. J., additional, Järvinen, M., additional, Laplace-Treyture, C., additional, Maileht, K., additional, McDonald, C., additional, Mischke, U., additional, Moe, J., additional, Morabito, G., additional, Nõges, P., additional, Nõges, T., additional, Ott, I., additional, Pasztaleniec, A., additional, Skjelbred, B., additional, and Thackeray, S. J., additional
- Published
- 2012
- Full Text
- View/download PDF
8. SCHIZOPHRENIA IN THE ELDERLY VS DEMENTIA
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Blanco Prieto, M., primary, Martínez de Hoyos, C., additional, and Díaz Moreno, H., additional
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- 2008
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9. Alcoholismo
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Daz Moreno, H., primary, Olmos Espinosa, R., additional, and Martnez de Hoyos, C., additional
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- 2007
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10. Guerre des isotopies dans la conceptualisation de la néologie d’emprunt : le « quantitative easing » de la BCE et sa figuralité à l’épreuve du discours de presse francophone
- Author
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Maldussi Danio and J. C. de Hoyos, C. Poix, A. Renwick, C. Veleanu
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assouplissement quantitatif, BCE, métaphore, métonymie, quantitative easing, ECB, metaphor, metonymy, metafora, metonimia - Abstract
This contribution proposes a preliminary analysis of the figures of speech surrounding the term "quantitative easing", a prototypical example of an opaque borrowed neologism, which generates a proliferation of accompanying figures of speech in the press. It first deals with the reasons for the term's opacity and complexity. It then discusses the role of metaphor and metonymy as catalysts of federating lines of thought, however different these may be, a reflection of opposing visions of Europe. Cet article propose une première analyse de la figuralité qui entoure le terme « quantitative easing », un exemple prototypique de néologisme d’emprunt opaque qui appelle une cohorte de formulations métasémiques dans le discours de presse. Il traite d’abord les raisons de son opacité et de sa complexité. Il aborde ensuite le rôle des métaphores et des métonymies en tant que catalyseurs de camps de pensée fédérateurs et opposés, reflet de différentes visions de l’Europe.
- Published
- 2020
11. Benefits and limitations of an intercalibration of phytoplankton assessment methods based on the Mediterranean GIG reservoir experience.
- Author
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Pahissa J, Catalan J, Morabito G, Dörflinger G, Ferreira J, Laplace-Treyture C, Gîrbea R, Marchetto A, Polykarpou P, and de Hoyos C
- Subjects
- Eutrophication, Lakes, Mediterranean Region, Reproducibility of Results, Water Pollution analysis, Environmental Monitoring methods, Phytoplankton growth & development, Water Pollution statistics & numerical data
- Abstract
The status of European legislation regarding inland water quality after the enactment of the Water Framework Directive (WFD) originated scientific effort to develop reliable methods, primarily based on biological parameters. An important aspect of the process was to ensure that quality assessment was comparable between the different Member States. The Intercalibration process (IC), required in the WFD ensures the unbiased application of the norm. The presented results were developed in the context of the 2nd IC phase. An overview of the reservoir type definition of the Lake Mediterranean Geographical Intercalibration Group, where four types were considered divided by both alkalinity and climate, together with the results for selection of Maximum Ecological Potential sites (MEP) are presented. MEP reservoirs were selected based on pressure and biological variables. Three phytoplankton-based assessment methods were intercalibrated using data from Mediterranean countries. The Mediterranean Assessment System for Reservoirs Phytoplankton (Spain), the New Mediterranean Assessment System for Reservoirs Phytoplankton (Portugal and Cyprus) and the New Italian Method (Italy) were applied. These three methods were compared through option 3 of the Intercalibration Guide. The similarity of the assessments was quantified, and the Good/Moderate (GM) boundaries assessed. All three methods stood as comparable at the GM boundary except for the MASRP in siliceous wet reservoirs, which was slightly stricter. Finally, the main taxonomic groups represented in the phytoplankton community at MEP conditions were identified, as well as their main changes with an increasing trophic status. MEP sites are dominated by chrysophytes in siliceous wet reservoirs and by the diatoms Cyclotella and Achnanthes in calcareous ones. Cyanobacteria take over the community in both calcareous and siliceous wet reservoirs as eutrophication increases. In summary, the relevance and reliability of the quality assessment methods compared were confirmed both from an ecological perspective and a health risk management point of view., (Copyright © 2015 Elsevier B.V. All rights reserved.)
- Published
- 2015
- Full Text
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12. First detection of cyanobacterial PSP (paralytic shellfish poisoning) toxins in Spanish freshwaters.
- Author
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Wörmer L, Cirés S, Agha R, Verdugo M, de Hoyos C, and Quesada A
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- Mass Spectrometry, Saxitoxin analysis, Spain, Cyanobacteria chemistry, Environmental Monitoring statistics & numerical data, Fresh Water chemistry, Saxitoxin analogs & derivatives
- Abstract
Presence of the paralytic shellfish toxins (PSTs) saxitoxin, neosaxitoxin, decarbamoyl saxitoxin and gonyautoxin-5 was analyzed by mass spectrometry in 41 Spanish freshwaters and 13 strains of potential PST-producing planktonic cyanobacteria. Toxins were detected in five waterbodies, but were absent from the isolated strains. PST containing samples belonged to the same geographical region (South Western Spain) and were most likely related to the presence of the genus Aphanizomenon., (Copyright © 2011 Elsevier Ltd. All rights reserved.)
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- 2011
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13. Defining chlorophyll-a reference conditions in European lakes.
- Author
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Poikāne S, Alves MH, Argillier C, van den Berg M, Buzzi F, Hoehn E, de Hoyos C, Karottki I, Laplace-Treyture C, Solheim AL, Ortiz-Casas J, Ott I, Phillips G, Pilke A, Pádua J, Remec-Rekar S, Riedmüller U, Schaumburg J, Serrano ML, Soszka H, Tierney D, Urbanic G, and Wolfram G
- Subjects
- Environmental Monitoring methods, Europe, Eutrophication, Phytoplankton, Reference Values, Chlorophyll, Fresh Water
- Abstract
The concept of "reference conditions" describes the benchmark against which current conditions are compared when assessing the status of water bodies. In this paper we focus on the establishment of reference conditions for European lakes according to a phytoplankton biomass indicator--the concentration of chlorophyll-a. A mostly spatial approach (selection of existing lakes with no or minor human impact) was used to set the reference conditions for chlorophyll-a values, supplemented by historical data, paleolimnological investigations and modelling. The work resulted in definition of reference conditions and the boundary between "high" and "good" status for 15 main lake types and five ecoregions of Europe: Alpine, Atlantic, Central/Baltic, Mediterranean, and Northern. Additionally, empirical models were developed for estimating site-specific reference chlorophyll-a concentrations from a set of potential predictor variables. The results were recently formulated into the EU legislation, marking the first attempt in international water policy to move from chemical quality standards to ecological quality targets.
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- 2010
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14. Long-term outcomes in patients with schizophrenia treated with risperidone long-acting injection or oral antipsychotics in Spain: results from the electronic Schizophrenia Treatment Adherence Registry (e-STAR).
- Author
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Olivares JM, Rodriguez-Morales A, Diels J, Povey M, Jacobs A, Zhao Z, Lam A, Villalobos Vega JC, Cuéllar JA, de Castro FJ, Quintero CM, Martíin JF, Domínguez P, Ojeda JL, Cortés SS, Cala FI, Marín CG, Castro LM, Duaso MA, Albarracín JR, Vergara GN, Benítez AF, Cleries FM, Pérez-Brian JM, Aragón AB, Navarro JC, Biedma JA, de Pedro RB, González JF, López ME, Moreno HD, López JA, Rodríguez EO, de Hoyos CM, Sacristán MP, Martín MD, Ballesteros EM, Rodríguez PA, Menéndez LF, Rivas RS, del Pino Cuadrado P, Lauffer JC, Solano JJ, Martínez JM, Solano FG, Rodríguez PG, Rodríguez JA, Cano TR, Fortacin MD, Lobeiras JM, Sampedro JM, Bravo AP, Pellicer AF, López MD, Liste JF, Fernández MR, Losada AC, Mendez RV, Romero SA, Blanco JJ, Bonaselt IT, Mahia MC, del Valle EF, Yañez PQ, Camarasa MG, Alonso JA, Mendez GF, Feliz FD, Lamela MA, Piñero MV, Alvarado PF, Gómez IL, Martín PF, Gómez JL, López AG, Jiménez AR, Nafs AE, Barquero NC, Ortiz RF, Noguera JL, Carrasco PR, Muñoz JM, Palma MM, Hortelano CM, Bonome LS, Sevilla JS, Juan JM, Ramos JM, Muñoz JL, Guisasola JE, Vazquez LS, Guerras FC, Nebot FJ, Fernández FJ, Nicolau AL, Subirats RC, Kidias MM, Navarro VF, García BF, del Rosal FM, de Vicente Muñoz T, Ballester JA, Lieb PM, Martel AD, Bea ER, Joaquim IG, Enjuanes FB, Piñol MB, Carbonell EF, Muñoz RM, Giribets CA, Sans LA, Blanco AS, Felipe MA, Muñoz PG, Villanueva AP, Arroyo MB, Borri RC, Fallada SM, Merola MC, Rodon EP, Palmes JR, Martínez EP, Catala JM, Coca AS, Ferrandiz FP, Paya EF, Caballero GI, Bonet AF, Figueras JF, Pagador PM, Garibo MM, Camo VP, Carrillo CS, Valero CP, Rebollo FJ, García Campayo J, Sala Ayma JM, Roig MM, de Uña Mateos MA, Bertolin RG, García AM, Mazo FJ, Velasco JL, Pérez LS, Casado CJ, Barba JJ, Diaz MC, Rubio JP, Mandoli AS, Herrero AU, Martínez AR, Serrano PS, Rodríguez EN, Montesinos JS, Macia JF, Mateos Marcos AM, Soto JV, Dumont MV, Pagan JP, Martínez VB, Santiuste de Pablos M, Delgado CE, Quiles MD, López FJ, Navarro PP, Torres AM, Ingles FJ, Arias-Camison JM, Manzano JC, Peña RV, Guitarte GP, Fontecilla HB, Romero JB, Gil RS, Lozano JM, Adanez LD, Zarranz Herrera-Oria I, Jiménez JP, Vaz FC, García OS, Anton CC, Casula RR, Hernandez MC, Escabias FT, Torresano JR, Pérez-Villamil AH, Estevez L, Figuero MA, Muñoz de Morales A, Calvin JL, Criado MD, Rodríguez VM, Ambrosolio EB, Madera PM, Alfaro GP, Vidal MM, Valtuille AG, Ruiz O, Cabornero GL, Echevarria Martínez de Bujo M, Mallen MJ, Puigros JS, Martorell AL, Forteza AC, Arrebola ER, Rodríguez de la Torre M, Saiz CG, Bardolet I Casas C, Linde ER, De Arce Cordon R, Molina EM, Carazo FJ, Romero JJ, Cano DV, Dorado MS, Velazquez SC, Sánchez AJ, Leon SO, Sánchez KP, Benitez MH, Zugarramurai AI, Contreras MA, De la Varga González M, Marín PB, Robina FG, García MS, Pérez FJ, Bros PC, Gómez AC, de Dios Molina Martín J, Perera JL, Averbach MC, Perera JL, Palancares EG, Gallego de Dios MT, Rojo CF, Iglesias SS, Merino MI, Mestre NP, Urdaniz AP, Sánchez JM, Seco RG, Muñoz JF, Agut MM, Lozano ML, Herguedas FM, Pena AT, García JV, Martínez AV, Sanz Granado OS, Fernández MA, Canseco JM, López PA, Martín MA, Barrio JA, Ubago JG, Bennassar MR, Díez JM, Fleta JL, Fortes FP, López CA, Medina O, Alvarez DF, Roca JM, Valladolid GR, Tavera JA, García-Castrillon Sales JA, Llordes IB, Melgarejo CA, Cañas de la Paz F, Callol VV, García MB, García JB, Leal FJ, Corrales EC, Iglesias ES, Gómez MA, Serrano GG, Chillarón EG, Aguado FJ, Castillo JJ, González AG, Vázquez JG, Peralvarez MB, Diaz MR, Mesa MY, Artiles FJ, Chao MA, Mesa MY, del Rosario Santana P, Escudero MA, Berenguer MM, Llacer JM, Berna JA, Ortiz JB, Pardell LT, Hernández-Alvarez de Sotomayor C, Méndez MR, Garate RC, Múgica BD, González MC, Domingo JP, Navarro CS, Vera GS, Cuquerella MA, Monzo JL, Boada PC, Pérez MF, Parrado EC, Sánchez JJ, and Fernández JC
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- Administration, Oral, Adult, Antipsychotic Agents adverse effects, Benzodiazepines administration & dosage, Benzodiazepines adverse effects, Delayed-Action Preparations, Drug Therapy, Combination, Female, Follow-Up Studies, Humans, Injections, Intramuscular, Long-Term Care, Male, Middle Aged, Olanzapine, Patient Readmission statistics & numerical data, Prospective Studies, Psychiatric Status Rating Scales, Registries, Risperidone adverse effects, Antipsychotic Agents administration & dosage, Medication Adherence, Risperidone administration & dosage, Schizophrenia drug therapy, Schizophrenic Psychology
- Abstract
Background: The electronic Schizophrenia Treatment Adherence Registry (e-STAR) is a prospective, observational study of patients with schizophrenia designed to evaluate long-term treatment outcomes in routine clinical practice., Methods: Parameters were assessed at baseline and at 3 month intervals for 2 years in patients initiated on risperidone long-acting injection (RLAI) (n=1345) or a new oral antipsychotic (AP) (n=277; 35.7% and 36.5% on risperidone and olanzapine, respectively) in Spain. Hospitalization prior to therapy was assessed by a retrospective chart review., Results: At 24 months, treatment retention (81.8% for RLAI versus 63.4% for oral APs, p<0.0001) and reduction in Clinical Global Impression Severity scores (-1.14 for RLAI versus -0.94 for APs, p=0.0165) were significantly higher with RLAI. Compared to the pre-switch period, RLAI patients had greater reductions in the number (reduction of 0.37 stays per patient versus 0.2, p<0.05) and days (18.74 versus 13.02, p<0.01) of hospitalizations at 24 months than oral AP patients., Conclusions: This 2 year, prospective, observational study showed that, compared to oral antipsychotics, RLAI was associated with better treatment retention, greater improvement in clinical symptoms and functioning, and greater reduction in hospital stays and days in hospital in patients with schizophrenia. Improved treatment adherence, increased efficacy and reduced hospitalization with RLAI offer the opportunity of substantial therapeutic improvement in schizophrenia.
- Published
- 2009
- Full Text
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15. Sex differences in the prevalence of frailty in a population aged 75 and older in Spain.
- Author
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Fernandez-Bolaños M, Otero A, Zunzunegui MV, Beland F, Alarcón T, de Hoyos C, and Castell MV
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- Aged, Aged, 80 and over, Female, Humans, Male, Prevalence, Sex Distribution, Sex Factors, Spain, Frail Elderly statistics & numerical data
- Published
- 2008
- Full Text
- View/download PDF
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