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H Rigter

Publications and source records attributed to H Rigter.

At least 19 recordsLinked to original sources
PubMed2002

Guideline adherence rates and interprofessional variation in a vignette study of depression.

OBJECTIVE: To assess the appropriateness of and variation in intention-to-treat decisions in the management of depression in the Netherlands. DESIGN: Mailed survey with 22 paper cases (vignettes) based on a population study. SETTING: A random sample from four professional groups in the Dutch mental healthcare system. SUBJECTS: 264 general practitioners, psychiatrists, psychotherapists, and clinical psychologists. MAIN OUTCOME MEASURES: Each vignette contained information on a number of patient characteristics taken from three national depression guidelines. The distribution of patient characteristics was based on data from a population study. Respondents were asked to choose the best treatment option and the best treatment setting. For each vignette we examined which of the selected treatments was appropriate according to the recommendations of the three published Dutch clinical guidelines and a panel of experts. RESULTS: 31% of all intention-to-treat decisions were not consistent with the guidelines. Overall, less severe depression, alcohol abuse, psychotic features, and lack of social resources were related to more inappropriate judgements. There was considerable variation between the professional groups: psychiatrists made more appropriate choices than the other professions although they had the highest rate of overtreatment. CONCLUSIONS: There is sufficient variation in the intentions to treat depression to give it priority in quality assessment and guideline development. Efforts to achieve appropriate care should focus on treatment indications, referral patterns, and overtreatment.

Antidepressive Agents↗
PubMed2000

Effect of physician specialty on treatment recommendation to patients with coronary artery disease.

OBJECTIVE: To assess the influence of physician specialty and the way in which patient data are presented in the treatment recommended for patients with coronary artery disease. METHODS: In a prospective study, 3,628 patients with significant coronary artery disease who had been referred to 1 of 10 heart centers in the Netherlands as possible candidates for either percutaneous transluminal coronary angioplasty (PTCA) or coronary artery bypass graft surgery (CABG) were recruited. Within each center, the recommended treatment is determined by a team consisting of cardiologists only, cardiovascular surgeons only, or cardiologists and cardiovascular surgeons (i.e., composite teams). The main outcome measures are the proportions of patients for whom PTCA, CABG, or noninvasive (medical) therapy was recommended. RESULTS: Composite teams made 71% of recommendations, surgeon-only teams, 12%, and cardiologist-only teams, 17%. Cardiologist-only teams primarily recommended patients to PTCA, surgeon-only teams to CABG, while combined teams made more evenly distributed recommendations (p < .001). Although the patients discussed by the three types of teams were clinically different, the recommendation patterns remained significant after adjusting for these differences (p < .001). For patients with recent myocardial infarction, direct presentation of the case to the team by the referring cardiologist reduced the likelihood that CABG would be recommended. CONCLUSIONS: The treatment recommended to patients with coronary artery disease is affected by the composition of the team providing the recommendation. These findings have important implications for clinical decision making for patients with cardiovascular disease.

Adult↗
PubMed1997

Waiting for coronary revascularization: a comparison between New York State, The Netherlands and Sweden.

OBJECTIVE: To compare waiting times for percutaneous transluminal coronary angioplasty (PTCA) and coronary artery bypass graft (CABG) surgery in New York State, the Netherlands and Sweden and to determine whether queuing adversely affects patients' health. METHODS: We reviewed the medical records of 4487 chronic stable angina patients who underwent PTCA or CABG in one of 15 New York State hospitals (n = 1021) or were referred for PTCA or CABG to one of ten hospitals in the Netherlands (n = 1980) or to one of seven hospitals in Sweden (n = 1486). We measured the median waiting time between coronary angiography and PTCA or CABG. RESULTS: The median waiting time for PTCA in New York was 13 days compared with 35 and 42 days, respectively, in the Netherlands and Sweden (P < 0.001). For CABG, New York patients waited 17 days, while Dutch and Swedish patients waited 72 and 59 days, respectively (P < 0.001). The Swedish and Dutch waiting list mortality rate was 0.8% for CABG candidates and 0.15% for PTCA candidates. CONCLUSIONS: There were large variations in waiting time for coronary revascularization among these three sites. Patients waiting for CABG were at greatest risk of experiencing an adverse event. In both the Netherlands and Sweden, the capacity to perform coronary revascularization has been expanded since this study began. Further international cooperation may identify other areas where quality of care can be improved.

Angina Pectoris↗
PubMed1997

Setting standards for effectiveness: a comparison of expert panels and decision analysis.

OBJECTIVE: To compare criteria for coronary revascularization developed by the expert panel process and by decision analysis. METHOD: We reviewed the medical records of 3080 chronic stable angina patients who either underwent coronary artery bypass graft surgery (CABG) or percutaneous transluminal coronary angioplasty (PTCA) and determined the agreement between appropriateness ratings made by two expert physician panels, one from the United States and the second from The Netherlands. We also evaluated the agreement between these panels' appropriateness ratings and a decision analytic model's effectiveness categories. RESULTS: There was poor agreement between U.S. and Dutch panel appropriateness ratings for PTCA (kappa = 0.03) and slight agreement for bypass surgery (kappa = 0.18). Dutch ratings had substantial agreement with the decision analytic models effectiveness categories for both PTCA and CABG (kappa = 0.83 and 0.79, respectively) whereas there was no systematic agreement between U.S. ratings and the decision analytic model for PTCA and poor agreement for CABG (kappa = 0.00 and 0.18, respectively). CONCLUSIONS: Although the level of agreement between expert panels and decision analysis on when a procedure is appropriate or effective may vary by procedure and the strength of the scientific evidence, we found that Dutch physicians agree much more strongly with decision analysis than U.S. physicians.

Angioplasty, Balloon, Coronary↗
PubMed1997

Indications for coronary revascularisation: a Dutch perspective.

OBJECTIVE: To assess the appropriateness of indications for coronary artery bypass graft (CABG) surgery and percutaneous transluminal coronary angioplasty (PTCA). METHODS: A modified Delphi group judgement process with input from a panel of six interventional cardiologists and six cardiopulmonary surgeons. There was one clinician from each of the 12 tertiary referral heart centres in The Netherlands. MAIN OUTCOME MEASURE: Ratings by panel members, on a 1 to 9 scale, of indications presented as a choice between two treatments (CABG v medical treatment, PTCA v medical treatment, and CABG v PTCA) for 1182 model cases. Each case represented a unique combination of clinical features in terms of symptoms, medical history, and results of tests. Ratings were analysed with respect to degree of agreement among panelists, degree of appropriateness of indications, and panel's preference for invasive or medical treatment. RESULTS: The panel agreed on 58.6% and disagreed on 3.2% of the indications. The panel opted for invasive treatment in 48.2% and medical treatment in 22.8%, and had no clear preference for either method in 29.0% of the cases. When compared with medical treatment, CABG was more often rated appropriate than PTCA: 35.4% v 21.6% (P < 0.001). Panel scores depended on severity of anatomical disease. For instance, for 51.5% of the model cases with one-vessel disease not including the proximal left anterior descending artery, the panel preferred medical treatment to invasive treatment, while the latter was preferred in 18% of the cases. In cases with type C lesions, the panel frequently rated PTCA as inappropriate. Panel scores were also affected by nonclinical factors. Cardiologists and surgeons rated the procedure of their own specialty higher than the alternative invasive intervention. CONCLUSIONS: The panel method yields logically consistent scores of the appropriateness of indications for carrying out medical procedures. It may be an aid in formulating clinical practice guidelines.

Angioplasty, Balloon, Coronary↗
PubMed1997

The appropriateness of intention to treat decisions for invasive therapy in coronary artery disease in The Netherlands.

OBJECTIVE: To determine the appropriateness of intention to treat decisions concerning coronary artery bypass grafting (CABG) and percutaneous transluminal coronary angioplasty (PTCA) for patients with coronary artery disease in The Netherlands. DESIGN: Prospective study of intention to treat decisions using a computerised expert system. SETTING: "Presentation" sessions in 10 tertiary referral heart centres in 1992. PATIENTS: 3207 consecutive patients: 1618 CABG and 1589 PTCA candidates. MAIN OUTCOME MEASURE: Percentage of invasive treatment decisions rated appropriate, uncertain, or inappropriate by the expert system. RESULTS: PTCA decisions were common for patients with one-vessel disease and CABG decisions for patients with three-vessel and left main disease. PTCA decisions outnumbered CABG decisions in acute myocardial infarction. Of CABG decisions, 84% were rated appropriate, 12% uncertain, and 4% inappropriate. The proportions for PTCA decisions were 39% appropriate, 31% uncertain, and 29% inappropriate. Type C lesion was the main determinant of inappropriateness of PTCA decisions. If type C lesions were downgraded to type A/B lesions the rate of inappropriate PTCA decisions dropped to 6%. CONCLUSIONS: Clinicians in tertiary referral centres in The Netherlands favoured CABG if vessel disease was extensive or involved the left main artery, and PTCA for patients with less extensive disease and with acute myocardial infarction. Few CABG decisions were inappropriate. The main determinant of inappropriateness of PTCA decisions was its intended use in patients with type C lesions.

Aged↗
PubMed1996

Panellist consistency in the assessment of medical appropriateness.

Where information about the appropriateness of a surgical procedure is lacking, expert panels have been used to establish guidelines for medical practitioners. Such a panel was convened to assess the appropriateness of percutaneous transluminal coronary angioplasty and coronary artery bypass graft surgery in the Netherlands. The panel, consisting of interventional cardiologists and cardiothoracic surgeons, used a modified Delphi process to rate 1126 clinical indications over two rounds. This article describes the degree of change in both agreement amongst members and in the appropriateness ratings over the two rounds, and examines the internal consistency of the ratings of individual panellists. Over the two rounds, agreement increased. Although most appropriateness ratings remained unchanged, there was significant movement from equivocal ratings to determinate ratings. While individual members showed some degree of inconsistency in their scoring, the panel as a whole scored very consistently. The observed changes in appropriateness were consistent with expectations, showing that the appropriateness method is used logically and consistently by panellists.

Angioplasty, Balloon, Coronary↗
PubMed1994

[Assessment of indications using the RAND method: invasive therapy in coronary sclerosis as an example].

OBJECTIVE: To assess indications for performing medical procedures for their appropriateness, using a method designed by an American research institute, RAND. DESIGN: Delphi investigation SETTING: The Netherlands. METHOD: The RAND method was applied in the 'Dutch inventory of invasive coronary atherosclerosis treatments' study which concerns treatment choices in coronary artery disease: coronary artery bypass grafting (CABG), percutaneous transluminal coronary angioplasty (PTCA) and conservative treatment. Essential in the RAND method is the construction of a comprehensive matrix of potential indications. Each indication entails a comparison of two or three treatment options. A panel of 12 experts rated each indication in a two-stage process. When the majority of the panelists agreed that treatment option X was strongly to be preferred over Y, it was considered appropriate to perform X and inappropriate to perform Y. RESULTS: The experiences with the RAND method indicated that panelists judged critically and rated many indications for invasive treatment options as inappropriate or uncertain. The method was feasible, although not easy, and produced clinically valid results. CONCLUSION: The RAND method is especially useful when medical literature does not supply sufficient grounds in rating the appropriateness of an indication for medical procedure. However, the verdict 'appropriate' is not eternal. Medical science keeps evolving.

Angioplasty, Balloon, Coronary↗
PubMed1994

Recent public policies in The Netherlands to control pharmaceutical pricing and reimbursement.

In The Netherlands, the rate of consumption of medicine is low compared with that in other member states of the European Community. Nevertheless, expenditure on medicines is high in this country, because of a high price level. In the past decade, the cost of medicines has been growing more rapidly than the total expenditure on healthcare in The Netherlands. This prompted The Netherlands government to take action against the rise in the cost of medicines. Some policies were directed at the volume of consumption, but most focused on price. All had in common that they failed to produce lasting cost containment or did not stand up in court or to political debate. As a result, the measures proposed and implemented by the government have become increasingly harsh, departing from the Dutch tradition of harmonious policy-making carried out jointly by government and societal groups. The latest step has been the introduction (as of July 1, 1993) of a new version of a price reference system, which discourages the prescription of innovative but expensive drugs. It is too early to tell whether this policy will have a more enduring effect on cost than the previous measures.

Cost Control↗
PubMed1994

[Effect of physical activity in the elderly: a review of current literature and the possibility of economic evaluation].

The Netherlands government emphasizes the importance of preventive care for the elderly. From an economic and preventive point of view the potential of exercise programmes to reduce the use of health care services by the elderly deserves attention. We present an overview of the literature on the effects of physical activity on health and psychological well-being of the elderly and their use of health services. Our review covers the period 1988-1993 and also includes review articles. We found almost sixty relevant articles which about all satisfied our methodological criteria. In men, physical activity probably has a positive influence on the frequency of ischaemic heart disease. Exercise delays the onset of osteoporosis in women. The results for other diseases are ambiguous, despite the large amount of literature. Similarly, it is not clear yet whether physical activity can enhance well-being. Research on the effects of physical activity on the use of health services has hardly been done. We conclude that well-designed studies are needed to determine the cost-effectiveness of exercise programmes in the elderly.

Aged↗
PubMed1993

[Not Available].

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History, Modern 1601-↗
PubMed1990

The diffusion of organ transplantation in Western Europe.

The moment of introduction of clinical organ transplantations varied in Western Europe from country to country. In retrospect, one can distinguish pioneering countries (most notably the U.K. and France), and countries that were early or late adopters of the new technologies. An early start did not necessarily lead to extensive diffusion of organ transplantations, as shown by the example of the U.K. In general, Western Europe is lagging behind the U.S.A. In diffusion of organ transplantation technologies. With few exceptions, the introduction and diffusion of organ transplantations in Western Europe have been largely autonomous developments, not regulated by government or third party payers and only slowed down by lack of organs, facilities or funds. The lack of organs has been reduced by the activities of organ procurement and exchange organisations, and perhaps by legislation promoting organ donation. Nevertheless, the growth of the number of patients waiting for an organ is in almost all countries outpacing the increase in availability of organs.

Diffusion of Innovation↗