Methodologic principles of cost analyses in the nursing, medical, and health services literature, 1990-1996

Methodological reviews of economic evaluations in health care: what do they target?

INTRODUCTION AND OBJECTIVES

An increasing number of published studies of economic evaluations of health technologies have been reviewed and summarized with different purposes, among them to facilitate decision-making processes. These reviews have covered different aspects of economic evaluations, using a variety of methodological approaches. The aim of this study is to analyze the methodological characteristics of the reviews of economic evaluations in health care, published during the period 1990-2010, to identify their main features and the potential missing elements. This may help to develop a common procedure for elaborating these kinds of reviews.

METHODS

We performed systematic searches in electronic databases (Scopus, Medline and PubMed) of methodological reviews published in English, period 1990-2010. We selected the articles whose main purpose was to review and assess the methodology applied in the economic evaluation studies. We classified the data according to the study objectives, period of the review, number of reviewed studies, methodological and non-methodological items assessed, medical specialty, type of disease and technology, databases used for the review and their main conclusions. We performed a descriptive statistical analysis and checked how generalizability issues were considered in the reviews.

RESULTS

We identified 76 methodological reviews, 42 published in the period 1990-2001 and 34 during 2002-2010. The items assessed most frequently (by 70% of the reviews) were perspective, type of economic study, uncertainty and discounting. The reviews also described the type of intervention and disease, funding sources, country in which the evaluation took place, type of journal and author's characteristics. Regarding the intertemporal comparison, higher frequencies were found in the second period for two key methodological items: the source of effectiveness data and the models used in the studies. However, the generalizability issues that apparently are creating a growing interest in the economic evaluation literature did not receive as much attention in the reviews of the second period. The remaining items showed similar frequencies in both periods.

CONCLUSIONS

Increasingly more reviews of economic evaluation studies aim to analyze the application of methodological principles, and offer summaries of papers classified by either diseases or health technologies. These reviews are useful for finding literature trends, aims of studies and possible deficiencies in the implementation of methods of specific health interventions. As no significant methodological improvement was clearly detected in the two periods analyzed, it would be convenient to pay more attention to the methodological aspects of the reviews.

Cost-effectiveness of continuous erythropoietin receptor activator in anemia

Background

Erythropoiesis-stimulating agents (ESAs) are the mainstay of anemia therapy. Continuous erythropoietin receptor activator (CERA) is a highly effective, long-acting ESA developed for once-monthly dosing. A multitude of clinical studies has evaluated the safety and efficiency of this treatment option for patients with renal anemia. In times of permanent financial pressure on health care systems, the cost-effectiveness of CERA should be of particular importance for payers and clinicians.

Objective

To critically analyze, from the nephrologists’ point of view, the published literature focusing on the cost-effectiveness of CERA for anemia treatment.

Methods

The detailed literature search covered electronic databases including MEDLINE, PubMed, and Embase, as well as international conference abstract databases.

Results

Peer-reviewed literature analyzing the definite cost-effectiveness of CERA is scarce, and most of the available data originate from conference abstracts. Identified data are restricted to the treatment of anemia due to chronic kidney disease. Although the majority of studies suggest a considerable cost advantage for CERA, the published literature cannot easily be compared. While time and motion studies clearly indicate that a switch to CERA could minimize health care staff time in dialysis units, the results of studies comparing direct costs are more ambivalent, potentially reflecting the differences between health care systems and variability between centers.

Conclusion

Analyzed data are predominantly insufficient; they miss clear evidence and have to thus be interpreted with great caution. In this day and age of financial restraints, results from well-designed, head-to-head studies with clearly defined endpoints have to prove whether CERA therapy can achieve cost savings without compromising anemia management.

Traumatic brain injury: methodological approaches to estimate health and economic outcomes

The effort to standardize the methodology and adherence to recommended principles for all economic evaluations has been emphasized in medical literature. The objective of this review is to examine whether economic evaluations in traumatic brain injury (TBI) research have been compliant with existing guidelines. Medline search was performed between January 1, 1995 and August 11, 2012. All original TBI-related full economic evaluations were included in the study. Two authors independently rated each study's methodology and data presentation to determine compliance to the 10 methodological principles recommended by Blackmore et al. Descriptive analysis was used to summarize the data. Inter-rater reliability was assessed with Kappa statistics. A total of 28 studies met the inclusion criteria. Eighteen of these studies described cost-effectiveness, seven cost-benefit, and three cost-utility analyses. The results showed a rapid growth in the number of published articles on the economic impact of TBI since 2000 and an improvement in their methodological quality. However, overall compliance with recommended methodological principles of TBI-related economic evaluation has been deficient. On average, about six of the 10 criteria were followed in these publications, and only two articles met all 10 criteria. These findings call for an increased awareness of the methodological standards that should be followed by investigators both in performance of economic evaluation and in reviews of evaluation reports prior to publication. The results also suggest that all economic evaluations should be made by following the guidelines within a conceptual framework, in order to facilitate evidence-based practices in the field of TBI.

The effect of high nursing surveillance on hospital cost

PURPOSE

The purpose of this study was to determine the cost of one nursing treatment, surveillance, for older, hospitalized adults at risk for falling.

DESIGN

An observational study using information from data repositories at one Midwestern tertiary hospital. The inclusion criteria included patients age>60 years, admitted to the hospital between July 1, 1998 and June 31, 2002, at risk for falls or received the nursing treatment of fall prevention.

METHODS

Data came from clinical and administrative data repositories that included Nursing Interventions Classification (NIC). The nursing treatment of interest was surveillance and total hospital cost associated with surveillance was the dependent variable. Propensity-score analysis and generalized estimating equations (GEE) were used as methods to analyze the data. Independent variables related to patient characteristics, clinical conditions, nurse staffing, medical treatments, pharmaceutical treatments, and other nursing treatments were controlled for statistically.

FINDINGS

The total median cost per hospitalization was $9,274 for this sample. The median cost was different (p=0.050) for patients who received high versus low surveillance. High surveillance delivery cost $191 more per hospitalization than did low surveillance delivery.

CONCLUSION

Propensity scores were applied to determine the cost of surveillance among hospitalized adults at risk for falls in this observational study. The findings show the effect of high surveillance delivery on total hospital cost compared to low surveillance delivery and provides an example of a useful method of determining cost of nursing care rather than including it in the room rate. More studies are needed to determine the effects of nursing treatments on cost and other patient outcomes in order for nurses to provide cost-effective care. Propensity scores were a useful method for determining the effect of nursing surveillance on hospital cost in this observational study.

CLINICAL RELEVANCE

The results of this study along with possible clinical benefits would indicate that frequent nursing surveillance is important and might support the need for additional nursing staff to deliver frequent surveillance.

Farmacoeconomia: análise de uma perspectiva inovadora na prática clínica da enfermeira

O objetivo desse artigo é abordar conceitos e métodos de avaliação farmacoeconômica, analisar e discutir as limitações e perspectivas do uso da farmacoeconomia. Trata-se de um estudo analítico e reflexivo cujo objeto é a aplicabilidade da farmacoeconomia no âmbito da enfermagem. No contexto atual, esta disciplina vem se tornando instrumento essencial, viabilizando tomada de decisões fundamentadas em desfechos e custos. Todavia, o seu uso exige conhecimento atualizado acerca da terminologia e da metodologia das análises, no intuito de assegurar a aplicação e a interpretação correta dos resultados. O grande desafio das enfermeiras é aplicar os instrumentos da farmacoeconomia às questões cotidianas da prática clínica e superar as dificuldades metodológicas relativas à identificação, cálculo e comparação dos custos e desfechos.

Health services research methods: tools for nurse leaders

A political competency for leaders is to effectively articulate the evidence behind management best practices. Evidence-based practice requires special skills from the nurse leader, many of which are found in health services research (HSR) methods. This review presents approaches associated with HSR, which can be used by nurse managers for the benefit of their units. HSR methods reviewed are cost analyses, small area analysis, geographic information systems, use of existing databases, quality of care measures, and risk adjustment. This review examines the kind of evidence various HSR methods provide, as well as examples of their use and resources needed to apply them.

Impact of a nurse practitioner-assisted preoperative assessment program on quality

BACKGROUND

The anesthesia manpower shortage in the last few years in the US has limited many hospital pediatric surgical services. We sought to meet an increasing surgical caseload, while providing safe, timely and patient-centered care by instituting a nurse practitioner-assisted preoperative evaluation (NPAPE) program. The strategic goal of this program was to shift anesthesiologists from the preanesthesia clinic to the operating room (OR), while maintaining the quality of preoperative care. Our study sought to evaluate the quality of the NPAPE program.

METHODS

One thousand five hundred and nine children aged 1 month-18 years, 463 parents, 25 anesthesiologists and 20 preoperative clinic nurses were studied. Indicators of quality were incidence of respiratory complications (apnea/hypopnea, laryngospasm, bronchospasm, and supplemental oxygen use in postanesthesia care unit), patient preoperative preparation time and parent and staff (anesthesiologists and preoperative clinic nurse) satisfaction. These indicators were recorded for 1 week every 3 months for 1 year. The first week (baseline) was an anesthesiologist-only preoperative assessment (three anesthesiologists performing approximately 120 evaluations per day). The subsequent four data collection weeks at 3, 6, 9, and 12 months were nurse practitioner (NP)-aided preoperative assessments (one anesthesiologist with six NPs performing approximately 120 evaluations per day).

RESULTS

The incidence of respiratory complications, patient preoperative preparation time, and levels of parental satisfaction did not differ significantly between anesthesiologist-only and NP-aided assessments. However, anesthesiologist and preoperative clinic nurse satisfaction increased significantly postimplementation of the program.

CONCLUSIONS

Our study revealed that within a year of its implementation, the NPAPE program maintained patient safety, timeliness, and a high level of parent satisfaction as well as increased staff satisfaction, while shifting two anesthesiologists to the OR. A NP-assisted preoperative evaluation program can offer operational advantages without compromising care.

The cost and cost-effectiveness of nursing services in health care

This article examines the literature on cost-effectiveness in nursing, and considers the relationship between this literature and decision-making in health care systems. Researchers have attempted to examine costs and benefits of nurse staffing and nursing interventions for decades. There are strong literatures for some topics, such as advanced practice nursing, clinical practices, occupational health nursing, and workplace training. However, there are gaps in the literature on the cost-effectiveness of nurse staffing patterns, the use of agency personnel, and changes in organizational structure. A review of 6 major health care management textbooks finds few references to cost-effectiveness analysis, suggesting that health care leaders have little education regarding how to conduct or evaluate economic studies. The agenda for nursing research on cost-effectiveness is daunting. Research must be based on large, representative samples; provide clear, compelling results; discuss the importance of both costs and benefits in decision-making; and be published in highly-visible journals.

A nursing home telehealth system: keeping residents connected

Live video and detailed images of nursing home residents can be transmitted in real time via the Internet. This telehealth system allows residents and long-term care health professionals to connect with experts not available on-site. Electronic stethoscope, otoscope, dermascope, dentalscope, and electrocardiogram are available for use via the Internet. Impediments to implementing telehealth systems in long-term care include costs and the lack of reimbursement for telehealth services. Reimbursement for telemedicine in nursing homes is limited by originating site, current procedural terminology codes, and facility location.

Use of time studies for determining intervention costs

BACKGROUND

Cost-effectiveness analyses are increasingly recommended to evaluate the effectiveness of health interventions. Determining the costs associated with delivery of a particular intervention is essential in conducting a cost-effectiveness analysis. Yet, there are few guidelines available to assist investigators in how to assess intervention costs associated with the personnel portion of an intervention.

OBJECTIVES

To describe the use of time studies in calculating the program costs of personnel for use in future cost-effectiveness analysis of health interventions.

METHODS

The literature on calculating intervention costs for use in cost-effectiveness analyses is reviewed. The process for conducting a time study for determining personnel costs in delivering an intervention and a step-by-step example from a time study are used to illustrate how personnel costs associated with delivery of the intervention can be separated from those costs associated with implementation of research procedures in the determination of research costs.

CONCLUSIONS

Time studies provide a good estimate of part of the cost of implementing an intervention that is often difficult to determine-personnel time. The design of the time study should consider intervention components, staff involvement, and the time period for data collection.

Critical appraisal of published economic evaluations of home care for the elderly

The goal of the study was to appraise the economic evaluations published between 1980 and 2004 of "home care" for the elderly, focusing on the methodological aspects. MEDLINE was searched to identify and assess economic evaluations (defined as an analysis comparing two or more strategies, involving the assessment of both costs and consequences) related to "home care" exclusively for the elderly (65 years or more) and to critically appraise the methodology using five accepted principles used worldwide for conducting economic evaluations. Twenty-four economic evaluations of "home care" for the elderly were identified and the articles were assessed. All five principles were satisfactorily addressed in two studies (8.3%), four principles in four studies (16.7%), three principles in five studies (20.8%), two principles in eight studies (33.3%) and only one principle in five studies (20.8%). A disparity in the methodology of writing economic evaluations compromises the comparisons among outcomes and lately jeopardizes decisions on the choice of the most appropriate healthcare interventions. The methodological principles represent important guidelines but the discussion of the context of the economic evaluation and the special characteristics of some services and populations should be considered for the appropriate use of economic evaluations.

Assessing outcome after hand surgery: the current state

An overview of the current state of outcome measurement after hand surgery is presented. The paper focuses on the development, application and strengths and weaknesses of it also reviews the existing questionnaires and suggests recommendations for use in research or clinical practice.

Using cost-analysis techniques to measure the value of nurse practitioner care

Nurse practitioners are in a unique position to deliver high-quality care to a variety of populations and are being utilized in many countries worldwide. Although certain aspects of the nurse practitioner role may differ from country to country, limited financial support and competition for access to patients make it incumbent on nurse practitioners to document the cost-effectiveness of their care. Cost analysis, a business tool that can be used by any practitioner in any health care system, was used to examine business practices of an academic-based nurse-managed centre. In order for this tool to be effective, nurse practitioners must become comfortable with using cost-analysis techniques in their practices. Linking outcome data with cost data was found to be one method for explicating the value of nurse practitioner practice. Nurse practitioners must also recognize that they are competing with primary-care physician practices and other primary health-care practices. It is vital for nurse practitioners to document both the quality and the costs of their care in order to compete with physicians and other health care providers, in order to influence policy and other health-care decision makers.

Accuracy of terminology and methodology in economic analyses in otolaryngology

OBJECTIVE

Economic studies increasingly guide health care resource allocation decisions. Because rigorous adherence to accepted definitions and research techniques is critical to ensure accuracy, we evaluated the terminology and methods of otolaryngology economic analyses.

STUDY DESIGN

A total of 71 articles published from 1990 to 1999 in 6 peer-reviewed otolaryngology journals with terms such as "cost-effective" in their title or representing economic analyses were reviewed for terminology and use of established methodology guidelines.

RESULTS

Over half (35 of 66) of terms such as "cost-effective" were used incorrectly, and 60% of articles (39 of 64) confused "charge" and "cost" data. Eleven percent (7 of 64) of papers specified the perspective of their analysis. About half (17 of 30) reported a summary measure such as a cost-effectiveness ratio. Only one third (23 of 63) performed sensitivity analyses.

CONCLUSION

Adherence to accepted definitions and research methods is inconsistent, although we did note moderate improvements in making the distinction between costs and charges, defining of study perspective, and performing sensitivity analysis.

SIGNIFICANCE

Greater attention to both terminology and methodology can enhance the quality of economic analyses and ultimately improve certain resource allocation decisions.

Evaluating the cost of one telehealth application connecting an acute and long-term care setting

This article describes a study of the costs of a pilot telemedicine chronic wound consultation clinic. Cost minimization analysis is the technique used to examine the costs of the clinic. The components of cost analysis include the fixed costs of personnel and equipment and the indirect costs of circuit and line charges. Cost avoidance is also examined. Cost avoidance evaluates what costs were avoided by the use of the telemedicine clinic. Additionally, the cost perspectives of the consulting agency, the referring agency, and the patient are examined. The average cost of a chronic wound consultation was $136.16 (acute care perspective). Costs of a traditional face-to-face consultation, if the residents were transported to the acute care facility would be $246.28. Fifteen telehealth consultations per month were used to determine per consultation costs for line charges and depreciation/maintenance costs. In this pilot study, a cost savings was realized and patients benefited. Increased volume will help to offset the cost of the equipment depreciation and maintenance and make telehealth chronic wound consultations more cost effective.

Economic analysis of two models of low-risk maternity care: a freestanding birth center compared to traditional care

Costs were compared for two models of maternity care for low-risk pregnant women: a freestanding birth center (FSBC) and a medical model of care (MC). Sixty-nine subjects were enrolled in the FSBC group and 77 in the MC. In the FSBC group, prenatal costs were higher (mean difference $751, p </=.001) and childbirth care was less expensive ($1472, p </=.01). When costs for the entire maternity care episode were summed, there were no differences between groups ($6087 vs. $6803). Sensitivity analysis demonstrated that the FSBC could be more cost-effective than MC if it increased its volume.

Priority-setting for nursing research in the Republic of China

The question of how public funds for research should be allocated has led to participatory priority-setting in prosperous democracies like Taiwan, Republic of China. Useful criteria for research priorities are scientific merit, social benefit and feasibility. Taking a health needs approach and using these criteria, nearly 200 nurses from service and education in a national forum participated in describing research priorities. Through the group method of idea-writing, for clinical nursing, of high priority were assessing quality, care of the elderly, and preventing infectious disease. For nursing education, research addressing advanced role preparation and bridging nursing education and practice were priorities. For nursing management, research of highest priority pertained to economic evaluation, personnel administration, and effectiveness. These suggestions from the deliberation of a committed group of nurses can help shape future national decisions about research funding and training.

Music therapy as a nursing intervention for patients supported by mechanical ventilation

Music therapy is a nonpharmacologic nursing intervention that can be used as a complementary adjunct in the care of patients supported by mechanical ventilation. This article details the theoretical basis of music therapy for relaxation and anxiety reduction, highlights the research testing the intervention in such patients, and discusses areas of needed research to extend further the implementation of music therapy in critical care nursing practice in an effort to promote a healing environment for patients.