Towards the centralization of digestive oncologic surgery: changes in activity, techniques and outcome.

AIM: The objective of the present study was to examine changes in the activity, surgical techniques and results from the process of centralization of complex digestive oncologic surgery in 2005-2012 as compared to 1996-2000. MATERIAL AND METHODS: A retrospective cohort study employing the minimum basic data set of hospital discharge (MBDSHD 1996-2012) from public centers in Catalonia (Spain) was performed. The population consisted of individuals aged > 18 who underwent digestive oncologic surgery (esophagus, pancreas, liver, stomach or rectum). Medical centers were divided into low, medium, and high-volume centers (≤ 5, 6-10, and > 10 interventions/year, respectively). The tendency Chi-squared test was used to assess the centralization of patients in high-volume centers and hospital mortality evolution during the study period. Logistic regression was performed to assess the relationship between volume and outcome. RESULTS: A centralization of complex oncologic digestive surgery between 10% (liver) and 46% (esophagus) was obtained by means of a reduction in the number of hospitals that perform these interventions and a significant rise in the number of patients operated in high-volume centers (all types p ≤ 0.0001, except for esophagus). A significant decrease in mortality was observed, especially in esophagus (from 15% in 1996/2000 to 7% in 2009/12, p = 0.003) and pancreas (from 12% in 1996/2000 to 6% in 2009/12, p trend < 0.0001). CONCLUSIONS: A centralization of oncologic digestive surgery in high-volume centers and a reduction of hospital mortality in Catalonia were reported among esophageal and pancreatic cancers. However, no significant changes were found for others cancer types.

Impact of clinical and health services research projects on decision-making: a qualitative study.

BACKGROUND: This article reports on the impact assessment experience of a funding program of non-commercial clinical and health services research. The aim was to assess the level of implementation of results from a subgroup of research projects (on respiratory diseases), and to detect barriers (or facilitators) in the translation of new knowledge to informed decision-making. METHODS: A qualitative study was performed. The sample consisted of six projects on respiratory diseases funded by the Agency for Health Quality and Assessment of Catalonia between 1996 and 2004. Semi-structured interviews to key informants including researchers and healthcare decision-makers were carried out. Interviews were recorded, transcribed verbatim and analysed on an individual (key informant) and group (project) basis. In addition, the differences between achieved and expected impacts were described. RESULTS: Twenty-three semi-structured interviews were conducted. Most participants indicated changes in health services or clinical practice had resulted from research. The channels used to transfer new knowledge were mainly conventional ones, but also in less explicit ways, such as with the involvement of local scientific societies, or via debates and discussions with colleagues and local leaders. The barriers and facilitators identified were mostly organizational (in research management, and clinical and healthcare practice), although there were also some related to the nature of the research as well as personal factors. Both the expected and achieved impacts enabled the identification of the gaps between what is expected and what is truly achieved. CONCLUSIONS: In this study and according to key informants, the impact of these research projects on decision-making can be direct (the application of a finding or innovation) or indirect, contributing to a more complex change in clinical practice and healthcare organization, both having other contextual factors. The channels used to transfer this new knowledge to clinical practice are complex. Local scientific societies and the relationships between researchers and decision-makers can play a very important role. Specifically, the relationships between managers and research teams and the mutual knowledge of their activity have shown to be effective in applying research funding to practice and decision-making. Finally the facilitating factors and barriers identified by the respondents are closely related to the idiosyncrasy of the human relations between the different stakeholders involved.

Setting priorities in clinical and health services research: properties of an adapted and updated method.

OBJECTIVES: The objectives of this study is to review the set of criteria of the Institute of Medicine (IOM) for priority-setting in research with addition of new criteria if necessary, and to develop and evaluate the reliability and validity of the final priority score. METHODS: Based on the evaluation of 199 research topics, forty-five experts identified additional criteria for priority-setting, rated their relevance, and ranked and weighted them in a three-round modified Delphi technique. A final priority score was developed and evaluated. Internal consistency, test-retest and inter-rater reliability were assessed. Correlation with experts' overall qualitative topic ratings were assessed as an approximation to validity. RESULTS: All seven original IOM criteria were considered relevant and two new criteria were added ("potential for translation into practice", and "need for knowledge"). Final ranks and relative weights differed from those of the original IOM criteria: "research impact on health outcomes" was considered the most important criterion (4.23), as opposed to "burden of disease" (3.92). Cronbach's alpha (0.75) and test-retest stability (interclass correlation coefficient = 0.66) for the final set of criteria were acceptable. The area under the receiver operating characteristic curve for overall assessment of priority was 0.66. CONCLUSIONS: A reliable instrument for prioritizing topics in clinical and health services research has been developed. Further evaluation of its validity and impact on selecting research topics is required.

[Exhaustivity and critical tone of the news in print media reporting medical innovations]. / Exhaustividad y tono crítico de las noticias en la prensa escrita que informan de una innovación médica.

OBJECTIVE: To quantify how exhaustive and critical were stories reporting medical innovations published in print media and to analyze the characteristics that may be related. METHOD: Content analysis of the newspapers stories related to the discovery, introduction or improvement of a medical innovation through a questionnaire with ten criteria that allows calculating an overall score of exhaustiveness. The critical view was also included. RESULTS: We analyzed 204 newspapers stories that on average obtained a comprehensiveness score of 4.5. Were optimistic 70% of the stories. The most valued criteria were: level of detail of the explanation of the innovation and the correct differentiation between facts and opinions. While the worst-valued criteria were: disclosure of financial conflicts of interest and the quantification of harms. The variables author, length of the story and classification of the innovation were related to both the comprehensiveness score and the critical view. The comprehensiveness score was also related to the pathology, number of sources of information and the critical tone of the story, while the critical view was also related to the newspapers diffusion and the relevance of the news. CONCLUSIONS: The analyzed stories presented inaccuracies, biases or an excess of optimism (either intentional or involuntary). Some aspects of the stories discussed in more detail would provide solutions to many of the identified shortcomings.

The EuroSCORE and a local model consistently predicted coronary surgery mortality and showed complementary properties.

OBJECTIVE: To revalidate a local model for prediction of in-hospital mortality after coronary surgery several years after its introduction and the EuroSCORE in a specific area within its original scope. To assess the specific advantages of one type of instrument over the other in a definite context. STUDY DESIGN AND SETTING: Data from consecutive patients undergoing a first isolated coronary artery bypass between November 2001 and November 2003 in five hospitals in Catalonia were prospectively collected. RESULTS: The study included 1,605 patients. Areas under the receiver-operating characteristics curves were around 0.75 for both models. Calibration was low for both models and the local model significantly overestimated risk. The ordering of operating centers by performance was identical with each strategy but the centers labeled as outliers differed. CONCLUSION: (1) Evaluation of performance of individual hospitals was consistent using both systems and almost identical when they were internally recalibrated, (2) The impact of the benchmark population characteristics on model performance may be greater than that of risk factors considered for score calculation, (3) Promoting the use of a widely used instrument as the EuroSCORE might be sufficient for most evaluations. Local scales can be useful to highlight locally relevant features and temporal trends.

Prioritisation of patients on waiting lists for hip and knee arthroplasties and cataract surgery: Instruments validation.

BACKGROUND: Prioritisation instruments were developed for patients on waiting list for hip and knee arthroplasties (AI) and cataract surgery (CI). The aim of the study was to assess their convergent and discriminant validity and inter-observer reliability. METHODS: Multicentre validation study which included orthopaedic surgeons and ophthalmologists from 10 hospitals. Participating doctors were asked to include all eligible patients placed in the waiting list for the procedures under study during the medical visit. Doctors assessed patients' priority through a visual analogue scale (VAS) and administered the prioritisation instrument. Information on socio-demographic data and health-related quality of life (HRQOL) (HUI3, EQ-5D, WOMAC and VF-14) was obtained through a telephone interview with patients. The correlation coefficients between the prioritisation instrument score and VAS and HRQOL were calculated. For the reliability study a self-administered questionnaire, which included hypothetic patients' scenarios, was sent via postal mail to the doctors. The priority of these scenarios was assessed through the prioritisation instrument. The intraclass correlation coefficient (ICC) between doctors was calculated. RESULTS: Correlations with VAS were strong for the AI (0.64, CI95%: 0.59-0.68) and for the CI (0.65, CI95%: 0.62-0.69), and moderate between the WOMAC and the AI (0.39, CI95%: 0.33-0.45) and the VF-14 and the CI (0.38, IC95%: 0.33-0.43). The results of the discriminant analysis were in general as expected. Inter-observer reliability was 0.79 (CI95%: 0.64-0.94) for the AI, and 0.79 (CI95%: 0.63-0.95) for the CI. CONCLUSION: The results show acceptable validity and reliability of the prioritisation instruments in establishing priority for surgery.

[Hip and knee arthroplasties in Catalonia [Spain] from 1994 to 2005]. / Artroplastias de cadera y rodilla en Cataluña desde 1994 a 2005.

OBJECTIVE: Hip and knee arthroplasties are the most frequent surgical procedures in Catalonia. The aim of this study was to describe changes in the rates of these procedures and in their characteristics between 1994 and 2005. METHODS: We performed a cross-sectional study of total hip (THR) and knee (TKR) primary and revision joint replacement discharges using the Minimum Data Set (ICD-9-CM codes 81.51, 81.53, 81.54 and 81.55). Standardized THR and TKR rates by age and sex and revision burden were calculated and changing trends were analyzed through joinpoint regression. Four time periods were defined and patient and hospital stay characteristics were analyzed by comparing period 4 with period 1 through logistic regression models. RESULTS: In THR, the rates per 10,000 inhabitants increased from 4.1 to 6.6 between 1994 and 2000. In TKR, rates increased from 2.6 to 15.5 between 1994 and 2005. Hip revision burden increased until 2001, whereas knee revision burden increased for the entire period. The main reason for surgery was osteoarthritis. In both THR and TKR, the number of patients aged 75 or older and comorbidity increased. CONCLUSIONS: The increase in the rates and the change in patients' profile may reflect broadening of the indication criteria for these procedures. The impact of the foreseeable increase in revision surgery could be reduced by developing systems to evaluate prosthesis survival and clinical practice guidelines.

[The opinion of practitioners and internists on the impact of health technologies introduced in the last 25 years]. / Las tecnologías médicas más relevantes de los últimos 25 años según la opinión de médicos generalistas.

OBJECTIVES: To identify the most important health technologies (HT) introduced in the last 25 years and their impact on patients' health according to hospital internists and generalist physicians. METHODS: We performed a cross-sectional descriptive study. The 30 HT receiving the highest number of bibliometric citations in the previous 25 years (1977-2002) in generalist and primary care journals were selected. To assess the health impact of HT, a postal survey of the medical heads of 46 hospitals with 100-400 beds and an equal random sample of the directors of primary care centers was carried out in Catalonia, Spain. The professionals surveyed were asked to consider how adverse the effect on their patients' health would be if each of the HT on the list were unavailable. The personal and professional characteristics of the participating physicians were also collected. RESULTS: A total of 49 physicians answered the survey (53%). Instrumental and diagnostic technologies were considered to have the greatest impact on health, diagnostic imaging being the most highly scored. The lowest impact would be caused if some drugs were not available, hypoglycemic agents receiving the lowest scores. Although assessments were similar regardless of professional/practice characteristics (r > or = 0.7), some differences in diagnostic HT were observed, as well as variability in the participants' responses. CONCLUSIONS: Assessment of the impact of HT from the physicians' point of view varied. However, diagnostic and instrumental-visual technologies seem to be more highly rated than pharmacological innovations. Variability in responses was more closely related to the physicians' personal characteristics than to practice setting.

Maps of systematic variation in renal replacement therapy in Catalonia (2002-2012). / Atlas de variaciones sistemáticas en el tratamiento sustitutivo renal en Cataluña (2002­2012).

INTRODUCTION: Variations in the use of healthcare services can be defined as systematic variations of adjusted rates for certain aggregation levels of the population. The study analyses how renal replacement therapy (RRT) is used, identifying RRT variability in Catalonia from 2002 to 2012. MATERIAL AND METHODS: Ecological study by health area using data from the Catalan renal registry. We present incident rates, standardised incidence ratios and prevalence, while variability was calculated through direct and indirect standardisation methods. RESULTS: From 2002 until 31/12/2012, 10,784 patients initiated RRT in Catalonia: 9,238 on haemodialysis (HD) (50 treatments per 100,000 people 2010/2012), 1,076 on peritoneal dialysis (PD) (8.2 treatments per 100,000 people 2010/2012) and 470 received an early kidney transplant (KT) (4.4 treatments per 100,000 people 2010/2012). Over the 10 years, the HD cumulative incidence rate fell (7%), while the PD and KT incidence rates increased (63% and 177%, respectively); both are higher in young patients (<45 years). 4,750 patients received a kidney transplant in this period, 49% of which were aged between 45 and 65 years. There were no significant differences in variability in HD (RV5-95=1.3; Empirical Bayes [EB]∼ 0), or in the prevalence of KT (RV5-95=1.4; EB ∼ 0). Nevertheless, we found significant geographical variability in PD; notably in the districts of the province of Lérida, where the number of cases observed was greater than expected (RV5-95=4.01; EB=0.08). CONCLUSION: Although there was a notable rise in PD and early KT incidence rates, PD is still underused when compared to international recommendations. No territorial variability was found for HD or KT, but the use of PD was found to be higher in Lérida than in other areas. To reduce PD territorial variability and increase the uptake of this technique in the other regions, we propose 3initiatives: The development of RRT support tools for shared decision-making, the encouragement of specific PD professional training and the promotion of PD through complementary reimbursement systems.

[Evaluation of risk-adjusted hospital mortality after coronary artery bypass graft surgery in the Catalan public healthcare system. Influence of hospital management type (ARCA Study)]. / Evaluación de la mortalidad hospitalaria ajustada al riesgo de la cirugía coronaria en la sanidad pública catalana. Influencia del tipo de gestión del centro (estudio ARCA).

INTRODUCTION AND OBJECTIVES: Previous studies suggest that the effectiveness of coronary surgery is influenced by the type of management at the healthcare centre where the intervention is performed. The present study assessed the risk-adjusted hospital mortality of coronary surgery in the Catalan healthcare system in hospitals under either private or public management. METHODS: We carried out a prospective study of all consecutive patients receiving a first coronary artery bypass graft, with public financial support, in a period of 2 years at 5 hospitals under either public or private management. Preoperative risk was assessed using the EuroSCORE and Catalan Agency for Health Technology Assessment (CAHTA) predictive models. RESULTS: Overall, 1605 patients underwent interventions, 21% of which were at private hospitals. The percentage of patients undergoing non-elective surgery was higher at private hospitals (64% vs 50%), as was the percentage needing intravenous nitrates (17% vs 11%) and the percentage in functional class IV (20% vs 11%). The odds ratio for in-hospital mortality in private compared with public hospitals was 0.56 (95% CI, 0.29-1.06) when adjusted for EuroSCORE, 0.56 (95% CI, 0.29-1.07) when adjusted for CAHTA score, and 0.43 (95% CI, 0.21-0.87) when adjusted for patient characteristics. The mortality observed, 4.8% (95% CI 3.8-5.6), was not significantly higher than that predicted. CONCLUSIONS: a) Hospital mortality was equivalent to or lower than that expected after adjustment for the 2 risk scores; b) after adjustment for baseline patient characteristics, the results favored privately managed centers; and c) comparison with previous results suggests that coronary surgery effectiveness has improved in recent years.

Cost-effectiveness of a 'score and scope' strategy for the management of dyspepsia.

OBJECTIVE: It is important to identify the best initial work-up in patients with uninvestigated dyspepsia because of its epidemiological and economical relevance. The objective of the study was to assess systematically the effectiveness and cost-effectiveness of invasive and non-invasive strategies for the management of dyspepsia. METHODS: A decision analysis was performed to compare prompt endoscopy, score and scope, test and scope, test and treat, and empirical antisecretory treatment. Published and local data on the prevalence of different diagnoses, rates of Helicobacter pylori infection, accuracy values of diagnostic tests, and effectiveness of drug treatments were used. The perspective of analysis was that of the public healthcare payer, and only direct costs were included, with a one-year post-therapy time horizon. The main outcome measure was cost per asymptomatic patient, valued in 2003 Euros. RESULTS: Endoscopy was found to be the most effective strategy for the management of dyspepsia (38.4% asymptomatic patients), followed by test and scope (35.5%), test and treat (35.3%), score and scope (34.7%), and empirical treatment (28.5%). Incremental cost-effectiveness ratios showed that score and scope was the most cost-effective alternative (483.17 Euros per asymptomatic patient), followed by prompt endoscopy (1396.85 Euros). Sensitivity analyses showed variations when varying the values of prevalence of duodenal ulcer, and the values of healing of functional dyspepsia with antisecretory and eradication drugs. There were no changes when varying the prevalence of H. pylori in dyspepsia. CONCLUSIONS: We would recommend stratifying patients by a score system, referring first to endoscopy those patients at higher risk of organic dyspepsia.

[Prospective validation of a clinical scoring system for the diagnosis of organic dyspepsia]. / Estudio prospectivo de un modelo clínico predictivo de dispepsia orgánica.

BACKGROUND AND OBJECTIVE: Predictive symptomatic scoring models have been proposed to select patients with dyspepsia, who may be candidates to endoscopy. In a previous study performed by gastroentrologists from our group, we obtained three scales of symptoms to predict organic dyspepsia, peptic ulcer and esophagitis, respectively. Here we analyze the reproducibility of those scoring models of symptoms when used either by other gastroenterologists or general practitioners. PATIENTS AND METHOD: It was a clinical prospective study of 230 patients from the Viladecans hospital area (120 from primary healthcare and 110 from the gastroenterologist's consultation). The three validation scales were performed in each patient. Then, we performed a diagnostic gastroscopy which allowed to classify patients into those with organic dyspepsia (ulcer, esophagitis, cancer) or those with functional dyspepsia. We calculated the overall predictive accuracy for the gastroenterologist and the general practitioner and for the three diagnoses (organic dyspepsia, ulcer or esophagitis) using the C statistic. RESULTS: Discriminative capacities were 0.75 and 0.82 for organic dyspepsia, 0.78 and 0.86 for ulcer disease, and 0.78 and 0.82 for esophagitis, for the general practitioner and the gastroenterologist, respectively. In this validation study, the best cut-off value, namely the one combining good sensitivity and specificity, was found to be 7. CONCLUSIONS: A correct predictive capacity of the symptomatic score models when used by other gastroenterologists or by primary healthcare practioners confirms its reproducibility and transferability. The use of predictive symptomatic score models in everyday clinical practice can allow to rationalize the referral for endoscopy in our local setting.

Participación ciudadana en los comités éticos institucionales de investigación clínica y asistenciales de Cataluña / Participation of civilians in Catalonian clinical research and health care institutional ethical review committees / Participação dos cidadãos na pesquisa clínica institucional das comissões éticas e cuidado na Catalunha

Resumen: Objetivo: Conocer el nivel de participación de pacientes, usuarios y ciudadanos en los comités de ética de la investigación (CEI) y los comités de ética asistencial (CEA) acreditados en Cataluña. Material y métodos: Estudio descriptivo transversal en una muestra oportunista de 30 CEI y CEA. Se administró un cuestionario dirigido a los presidentes y al representante de los usuarios o ciudadanos (miembro lego). Para la interpretación de los resultados se analizó medias y desviación estándar. Las respuestas a las preguntas de texto abierto se analizaron mediante un análisis cualitativo del contenido. Resultados: Del total de los 30 comités de ética (CEI y CEA) contactados, 12 (40%) aceptaron participar. En total se realizaron 15 entrevistas (9 miembros de CEI y 6 miembros de CEA): 8 presenciales, 4 telefónicamente y 3 contestadas por correo electrónico. Resultados de los CEI: del total de 7 CEI entrevistados, 2 tenían representación ciudadana en su comité. El perfil correspondía a una mujer, de profesión administrativa y a un hombre de profesión auditor contable, ambos de más de 50 años. Resultados de los CEA: de los 5 CEA que participaron, 2 declararon tener representación de la ciudanía. El perfil correspondía a una mujer, de profesión administrativa y a un hombre de profesión profesor, ambos de más de 50 años. Discusión: Actualmente hay poca representación de la ciudadanía/pacientes en los comités éticos institucionales. Constituye un tema actual de debate la necesidad de incorporar el punto de vista del ciudadano/paciente, habiendo, sin embargo, un desconocimiento sobre el perfil más idóneo y en discusión su representatividad.

Abstract: Aim: To know the level of participation of patients, users and civilians in scientific ethical review committees (SERC) and health care ethical review committees (HCERC) accredited in Catalonian. Materials and methods: Descriptive transversal study using an opportunistic sample of 30 SERC and HCERC. A questionnaire was filled out addressed to presidents and consumer or civilian (lay member) representatives. For the interpretation of results means and standard deviations were analyzed. Answers to open texts questions were analyzed using qualitative content analysis. Results: 12 committees (40%) accepted to participate; 15 interviews were carried out (9 SERC members and 6 HCERC members): 8 person to person, 4 by phone and 3 by email. SERC Results: Of 7 SERC interviewed, 2 have a civilian representative in the committee. The profile was a woman of administrative profession and an auditor accountant man, both older than 50 years. HCERC Results: Of 5 HCERC participating, 2 declared having a civilian representative. The profile was a woman of administrative profession and a man teacher, both older than 50 years. Discussion: Currently, there is low civilian/patient representation in institutional ethical review committees. Today, the need to incorporate the point of view of the civilian/patient is a debatable issue, being unknown the suitable profile and their representativeness is under discussion.

Resumo: Objetivo: Conhecer o nível de participação de pacientes, usuários e cidadãos em comitês de ética de pesquisa (CEI) e as comissões de ética de cuidados de saúde (CEA) acreditados na Catalunha. Material e métodos: Estudo descritivo, transversal em uma amostra oportunista de 30 CEI e CEA. Um questionário dirigido aos presidentes e representante dos usuários ou cidadãos (membro de leigo) foi administrado. Para a interpretação dos resultados foi feita uma análise que incluiu as médias e o desvio-padrão. Analisaram-se as respostas às perguntas do texto aberto com uma análise qualitativa do conteúdo. Resultados: Do total dos 30 comitês de ética (CEI e CEA) contatados, 12 (40%) concordaram em participar. No total foram realizadas 15 entrevistas (9 membros do CEI e 6 membros da CEA). De todas as entrevistas realizadas, 8 foram presenciais, 4 foram realizadas por telefone e 3 foram respondidas por e-mail. Resultados da CEI: do total de 7 entrevistados da CEI, 2 tinham representação cidadã na sua Comissão. O perfil correspondia a uma mulher, de carreira administrativa e a um home de profissão auditor contábil, ambos com mais de 50 anos. Resultados da CEA: dos 5 CEA que participaram, 2 declararam ter representação cidadã. O perfil correspondente era de uma mulher, de carreira administrativa e a um homem professor, ambos com mais de 50 anos. Discussão: Atualmente há pouca representação dos cidadãos/pacientes em comitês de ética institucionais. A necessidade de incorporar o ponto de vista do cidadão/paciente constitui um tema atual de discussão, no entanto, falta conhecimento sobre o perfil mais adequado e discussão sua representatividade.

Characteristics of Spanish articles of "scientific quality" cited in clinical practice guidelines on mental health.

INTRODUCTION: The study aims to illustrate the impact of Spanish research in clinical decision making. To this end, we analysed the characteristics of the most significant Spanish publications cited in clinical practice guidelines (CPG) on mental health. MATERIAL AND METHODS: We conducted a descriptive qualitative study on the characteristics of ten articles cited in Spanish CPG on mental health, and selected for their "scientific quality". We analysed the content of the articles on the basis of the following characteristics: topics, study design, research centres, scientific and practical relevance, type of funding, and area or influence of the reference to the content of the guidelines. RESULTS: Among the noteworthy studies, some basic science studies, which have examined the establishment of genetic associations in the pathogenesis of mental illness are included, and others on the effectiveness of educational interventions. The content of those latter had more influence on the GPC, because they were cited in the summary of the scientific evidence or in the recommendations. Some of the outstanding features in the selected articles are the sophisticated designs (experimental or analytical), and the number of study centres, especially in international collaborations. Debate or refutation of previous findings on controversial issues may have also contributed to the extensive citation of work. CONCLUSIONS: The inclusion of studies in the CPG is not a sufficient condition of "quality", but their description can be instructive for the design of future research or publications.

[Health technology assessment in public health interventions: is prevention better than cure?]. / La evaluación de tecnologías sanitarias en intervenciones de salud pública: más vale prevenir que curar?

Medical activities are increasingly performed with preventive purposes, as part of community programs for secondary prevention but also as part of many clinical activities. However, there are few evaluations of preventive and health promotion activities and, in general, these evaluations only assess aspects of efficacy/effectiveness with little consideration of cost and cost-effectiveness and even less of the ethical, legal, social or organizational consequences. Given the growing interest in evaluation of these interventions from different perspectives, health technology assessment (HTA) has emerged as a multidisciplinary analysis strategy with distinct methodological approaches that may be useful to health administrations and policy-makers for decision making at different levels (micro, meso and macro). This manuscript discusses the characteristics and differential aspects related to assessment of preventive and health promotion activities. This type of evaluation poses constraints, limitations and challenges that should be considered during the process of HTA. In the case of public health there are additional challenges, because the evidence must satisfy a diverse audience, including public health professionals, clinicians, politicians, managers, economists and consumers. The challenge is even greater when evaluating complex, integrated community interventions in which local and contextual aspects are of tremendous importance. In addition, assessment of ethical issues is of the utmost importance since these issues comprise the origin of health services and the target populations are usually healthy.

Arthroplasty registers: a review of international experiences.

OBJECTIVES: Registers have proven to be a valuable instrument in the evaluation of arthroplasty procedures and the performance of implants. The aim of this study was to describe the structure, functioning, and content of arthroplasty registers in Europe and other parts of the world. METHODS: A search of technical reports was carried out through the Internet and in Medline/PubMed. The exhaustiveness of the information was confirmed using the links to Web pages of other registers and contacts with key people. Aims, methods in data collection and evaluation, internal structure and organization, participants, validity of the data, and other variables were assessed for each arthroplasty register using a qualitative content analysis of the texts. RESULTS: Fifteen arthroplasty registers were identified which published sufficient information to conduct a comparative analysis. Eight additional registers were identified but no information was available on the Internet or in English. Most registers were initiatives of an orthopaedic society receiving governmental funding. Data were collected using standardized clinical forms and additional information from clinical-administrative datasets or other registers (mortality, implant costs, hip fractures). The main outcome measure of these registers is survival of the prostheses. Registers use the Internet and their annual reports as the main strategy for the dissemination and feed-back of their results. CONCLUSIONS: Scientific or professional societies and the public health administration should collaborate in the development of arthroplasty registers. To adequately assess the results of observational data information on the structure, the process of arthroplasty interventions and patients characteristics should be collected.