Economics notes: measuring outcomes in economic evaluations

An economic evaluation of pharmacopuncture versus usual care for chronic neck pain: a pragmatic randomized controlled trial

BACKGROUND

This study aimed to evaluate the cost utility of pharmacopuncture in comparison with usual care for patients with chronic neck pain.

METHODS

A 12-week, multicenter, pragmatic randomized controlled trial was conducted, and 101 patients suffering from chronic neck pain for more than six months were randomly placed into the pharmacopuncture and usual care groups to receive four weeks of treatment and 12 weeks of follow-up observations. The quality-adjusted life year (QALY) was calculated using EQ-5D and SF-6D. Concerning costs in 2019, a primary analysis was performed on societal perspective cost, and an additional analysis was performed on healthcare perspective cost.

RESULTS

Compared to usual care, pharmacopuncture was superior as it showed a slightly higher QALY and a lower incremental cost of $1,157 from a societal perspective. The probability that pharmacopuncture would be more cost-effective at a willingness-to-pay (WTP) of $26,374 was 100%. Pharmacopuncture was also superior from a healthcare perspective, with a lower incremental cost of $26. The probability that pharmacopuncture would be more cost-effective at a WTP of $26,374 was 83.7%.

CONCLUSIONS

Overall, pharmacopuncture for chronic neck pain was found to be more cost-effective compared to usual care, implying that clinicians and policy makers should consider new treatment options for neck pain.

TRIAL REGISTRATION

Number NCT04035018 (29/07/2019) Clinicaltrials.gov; Number KCT0004243 (26/08/2019) Clinical Research Information Service.

Outcome Domain and Measurement Instrument Reporting in Randomized Controlled Trials of Interventions for Lumbar Spinal Stenosis: A Systematic Review

OBJECTIVE

To describe outcome measurement instruments and outcome domains in randomized controlled trials of any interventions for lumbar spinal stenosis (LSS).

DESIGN

Systematic review.

LITERATURE SEARCH

The Cochrane Central Register of Controlled Trials (CENTRAL) and PubMed were searched from inception to May 2020.

STUDY SELECTION CRITERIA

Trials were eligible if patients were diagnosed with LSS, with or without neurogenic claudication. Trials were eligible if they used at least 1 outcome measurement instrument.

DATA SYNTHESIS

Measurement instruments used in trials were extracted and then classified into outcome domains. We described the frequency of measurement instruments and outcome domains.

RESULTS

After study screening, 29 trials were included. In total, 54 different individual outcome measurement instruments were used. The Visual Analogue Scale (59%; n = 17) and the Oswestry Disability Index (52%; n = 15) were the most frequently used outcome measurement instruments in trials; function (90%; n = 26) and pain (62%; n = 18) were the most common outcome domains.

CONCLUSION

In total, 54 different measurement instruments were used in trials of interventions for LSS. This diverse range of observations contributes to outcome instrument heterogeneity between trials and impedes the analysis of data due to lack of comparability. The most common outcome domains assessed were pain and function, which will help inform a core outcome measure set for symptomatic LSS. J Orthop Sports Phys Ther 2022;52(7):446-456. Epub: 18 May 2022. doi:10.2519/jospt.2022.10879.

Conceptualising 'Benefits Beyond Health' in the Context of the Quality-Adjusted Life-Year: A Critical Interpretive Synthesis

There is growing interest in extending the evaluative space of the quality-adjusted life-year framework beyond health. Using a critical interpretive synthesis approach, the objective was to review peer-reviewed literature that has discussed non-health outcomes within the context of quality-adjusted life-years and synthesise information into a thematic framework. Papers were identified through searches conducted in Web of Science, using forward citation searching. A critical interpretive synthesis allows for the development of interpretations (synthetic constructs) that go beyond those offered in the original sources. The final output of a critical interpretive synthesis is the synthesising argument, which integrates evidence from across studies into a coherent thematic framework. A concept map was developed to show the relationships between different types of non-health benefits. The critical interpretive synthesis was based on 99 papers. The thematic framework was constructed around four themes: (1) benefits affecting well-being (subjective well-being, psychological well-being, capability and empowerment); (2) benefits derived from the process of healthcare delivery; (3) benefits beyond the recipient of care (spillover effects, externalities, option value and distributional benefits); and (4) benefits beyond the healthcare sector. There is a wealth of research concerning non-health benefits and the evaluative space of the quality-adjusted life-year. Further dialogue and debate are necessary to address conceptual and normative challenges, to explore the societal willingness to sacrifice health for benefits beyond health and to consider the equity implications of different courses of action.

An economic evaluation of Alexander Technique lessons or acupuncture sessions for patients with chronic neck pain: A randomized trial (ATLAS)

Objectives

To assess the cost-effectiveness of acupuncture and usual care, and Alexander Technique lessons and usual care, compared with usual GP care alone for chronic neck pain patients.

Methods

An economic evaluation was undertaken alongside the ATLAS trial, taking both NHS and wider societal viewpoints. Participants were offered up to twelve acupuncture sessions or twenty Alexander lessons (equivalent overall contact time). Costs were in pounds sterling. Effectiveness was measured using the generic EQ-5D to calculate quality adjusted life years (QALYs), as well as using a specific neck pain measure–the Northwick Park Neck Pain Questionnaire (NPQ).

Results

In the base case analysis, incremental QALY gains were 0.032 and 0.025 in the acupuncture and Alexander groups, respectively, in comparison to usual GP care, indicating moderate health benefits for both interventions. Incremental costs were £451 for acupuncture and £667 for Alexander, mainly driven by intervention costs. Acupuncture was likely to be cost-effective (ICER = £18,767/QALY bootstrapped 95% CI £4,426 to £74,562) and was robust to most sensitivity analyses. Alexander lessons were not cost-effective at the lower NICE threshold of £20,000/QALY (£25,101/QALY bootstrapped 95% CI -£150,208 to £248,697) but may be at £30,000/QALY, however, there was considerable statistical uncertainty in all tested scenarios.

Conclusions

In comparison with usual care, acupuncture is likely to be cost-effective for chronic neck pain, whereas, largely due to higher intervention costs, Alexander lessons are unlikely to be cost-effective. However, there were high levels of missing data and further research is needed to assess the long-term cost-effectiveness of these interventions.

Weighing the cost of educational inflation in undergraduate medical education

Despite the fact that the length of medical school training has remained stable for many years, the expectations of graduating medical students (and the schools that train them) continue to increase. In this Reflection, the authors discuss motives for educational inflation and suggest that these are likely innocent, well-intentioned, and subconscious-and include both a propensity to increase expectations of ourselves and others over time, and a reluctance to reduce training content and expectations. They then discuss potential risks of educational inflation, including reduced emphasis on core knowledge and clinical skills, and adverse effects on the emotional, psychological, and financial wellbeing of students. While acknowledging the need to change curricula to improve learning and clinical outcomes, the authors proffer that it is naïve to assume that we can inflate educational expectations at no additional cost. They suggest that before implementing and/or mandating change, we should consider of all the costs that medical schools and students might incur, including opportunity costs and the impact on the emotional and financial wellbeing of students. They propose a cost-effectiveness framework for medical education and advocate prioritization of interventions that improve learning outcomes with no additional costs or are cost-saving without adversely impacting learning outcomes. When there is an additional cost for improved learning outcomes or a decline in learning outcomes as a result of cost saving interventions, they suggest careful consideration and justification of this trade-off. And when there are neither improved learning outcomes nor cost savings they recommend resisting the urge to change.

Future Economics of Liver Transplantation: A 20-Year Cost Modeling Forecast and the Prospect of Bioengineering Autologous Liver Grafts

During the past 20 years liver transplantation has become the definitive treatment for most severe types of liver failure and hepatocellular carcinoma, in both children and adults. In the U.S., roughly 16,000 individuals are on the liver transplant waiting list. Only 38% of them will receive a transplant due to the organ shortage. This paper explores another option: bioengineering an autologous liver graft. We developed a 20-year model projecting future demand for liver transplants, along with costs based on current technology. We compared these cost projections against projected costs to bioengineer autologous liver grafts. The model was divided into: 1) the epidemiology model forecasting the number of wait-listed patients, operated patients and postoperative patients; and 2) the treatment model forecasting costs (pre-transplant-related costs; transplant (admission)-related costs; and 10-year post-transplant-related costs) during the simulation period. The patient population was categorized using the Model for End-Stage Liver Disease score. The number of patients on the waiting list was projected to increase 23% over 20 years while the weighted average treatment costs in the pre-liver transplantation phase were forecast to increase 83% in Year 20. Projected demand for livers will increase 10% in 10 years and 23% in 20 years. Total costs of liver transplantation are forecast to increase 33% in 10 years and 81% in 20 years. By comparison, the projected cost to bioengineer autologous liver grafts is $9.7M based on current catalog prices for iPS-derived liver cells. The model projects a persistent increase in need and cost of donor livers over the next 20 years that’s constrained by a limited supply of donor livers. The number of patients who die while on the waiting list will reflect this ever-growing disparity. Currently, bioengineering autologous liver grafts is cost prohibitive. However, costs will decline rapidly with the introduction of new manufacturing strategies and economies of scale.

Alexander Technique Lessons, Acupuncture Sessions or usual care for patients with chronic neck pain (ATLAS): study protocol for a randomised controlled trial

BACKGROUND

Chronic neck pain is a common condition in the adult population. More research is needed to evaluate interventions aiming to facilitate beneficial long-term change. We propose to evaluate the effect of Alexander Technique lessons and acupuncture in a rigorously conducted pragmatic trial with an embedded qualitative study.

METHODS/DESIGN

We will recruit 500 patients who have been diagnosed with neck pain in primary care, who have continued to experience neck pain for at least three months with 28% minimum cut-off score on the Northwick Park Neck Pain Questionnaire (NPQ). We will exclude patients with serious underlying pathology, prior cervical spine surgery, history of psychosis, rheumatoid arthritis, ankylosing spondylitis, osteoporosis, haemophilia, cancer, HIV or hepatitis, or with alcohol or drug dependency currently or in the last 12 months, or actively pursuing compensation or with pending litigation.The York Trials Unit will randomly allocate participants using a secure computer-based system. We will use block randomisation with allocation to each intervention arm being unambiguously concealed from anyone who might subvert the randomisation process.Participants will be randomised in equal proportions to Alexander Technique lessons, acupuncture or usual care alone. Twenty 30-minute Alexander Technique lessons will be provided by teachers registered with the Society of Teachers of the Alexander Technique and twelve 50-minute sessions of acupuncture will be provided by acupuncturists registered with the British Acupuncture Council. All participants will continue to receive usual GP care.The primary outcome will be the NPQ at 12 months, with the secondary time point at 6 months, and an area-under-curve analysis will include 3, 6 and 12 month time-points. Adverse events will be documented. Potential intervention effect modifiers and mediators to be explored include: self-efficacy, stress management, and the incorporation of practitioner advice about self-care and lifestyle. Qualitative material will be used to address issues of safety, acceptability and factors that impact on longer term outcomes.

DISCUSSION

This study will provide robust evidence on whether there are significant clinical benefits to patients, economic benefits demonstrating value for money, and sufficient levels of acceptability and safety.

TRIAL REGISTRATION

Current Controlled Trials ISRCTN15186354.

Cost effectiveness of CT colonography for UK NHS colorectal cancer screening of asymptomatic adults aged 60-69 years

BACKGROUND

Screening of populations at risk for colorectal cancer (CRC) allows the detection and successful treatment of tumours and their precursor polyps. The current UK CRC screening programme is faecal occult blood testing (FOBT), despite evidence from modelling studies to suggest that more cost-effective technologies exist.

OBJECTIVE

To assess the cost effectiveness of CT colonography (CTC) for colorectal cancer screening from the perspective of the UK NHS.

METHODS

A state-transition Markov model was constructed to estimate lifetime costs and health outcomes of a cohort of individuals screened at age 60-69 years using four different CRC screening technologies: FOBT, flexible sigmoidoscopy, optical colonoscopy and CTC.

RESULTS

CTC screening offered every 10 years was cost saving compared with the current UK programme of biennial FOBT screening. This strategy also yielded greater health benefits (QALYs and life-years) than biennial FOBT screening. The model fit observed CRC epidemiology data well and was robust to changes in underlying parameter values. CTC remained cost effective under a range of assumptions in the univariate sensitivity analysis. However, in the probabilistic sensitivity analysis, CTC dominated FOBT in only 5.9% of simulations and was cost effective at a threshold of pound30,000 per QALY gained in 48% of simulations.

CONCLUSIONS

CTC has the potential to provide a cost-effective option for CRC screening in the UK NHS and may be cost saving compared with the current programme of biennial FOBT. Further analysis is required to assess the impact of introducing CTC to the UK CRC screening programme on the NHS budget and capacity.

Implant overdentures for edentulous elders: study of patient preference

BACKGROUND

Studies show that elders wearing implant overdentures have improved nutrition and quality of life. However, upfront costs of this therapy are high, and the income of elderly edentulous populations is low.

OBJECTIVES

This study was designed (i) to measure the preferences of edentulous patients for mandibular two-implant overdentures using Willingness-To-Pay (WTP) and Willingness-To-Accept (WTA), (ii) to assess the effect of long-term financing on WTP and (iii) to assess the desired role of health care plans in financing dental prostheses.

METHODS

Edentulous elders (68-79 years; n = 36) wearing maxillary dentures and either a mandibular conventional denture (CD, n = 13) or a two-implant overdenture with ball attachments (IOD, n = 23) participated in this study. All had received their prostheses 2 years previously, as part of a randomised clinical trial. A three-part questionnaire was completed during a 20-min interview with a trained researcher.

RESULTS

Forty-six per cent (6/13) of the CD wearers and 70% (16/23) of the IOD wearers were willing to pay three times more than the current cost of conventional dentures for implant prostheses. These percentages were increased to 77% (CD) and 96% (IOD) if participants could pay for implant overdentures in monthly instalments. Eighty-six per cent (31/36) of all participants in both groups (21/23 IOD; 10/13 CD) thought that the government should cover at least some of the cost of implant overdentures.

CONCLUSIONS

This study shows that, the majority of elderly edentate individuals who have not experienced mandibular two-implant overdenture therapy are willing to pay the cost, particularly when payment can be made in monthly instalments.

Costs and consequences of enhanced primary care for depression: systematic review of randomised economic evaluations

BACKGROUND

A number of enhancement strategies have been proposed to improve the quality and outcome of care for depression in primary care settings. Decision-makers are likely to need to know whether these interventions are cost-effective in routine primary care settings.

METHOD

We conducted a systematic review of all full economic evaluations (cost-effectiveness and cost-utility analyses) accompanying randomised controlled trials of enhanced primary care for depression. Costs were standardised to UK pounds/US dollars and incremental cost-effectiveness ratios (ICERs) were visually summarised using a permutation matrix.

RESULTS

We identified 11 full economic evaluations (4757 patients). A near-uniform finding was that the interventions based upon collaborative care/case management resulted in improved outcomes but were also associated with greater costs. When considering primary care depression treatment costs alone, ICER estimates ranged from 7 ($13, no confidence interval given) to 13 UK pounds ($24,95% CI -105 to 148) per additional depression-free day. Educational interventions alone were associated with increased cost and no clinical benefit.

CONCLUSIONS

Improved outcomes through depression management programmes using a collaborative care/case management approach can be expected, but are associated with increased cost and will require investment.

Financial outcomes in transplantation--a provider's perspective

Despite a relatively large body of literature on health-care economics, including the economics of transplantation, there is a paucity of literature on financial outcomes of transplant procedures. Yet, there is a great need for transplant professionals to understand the financial elements of their transplant programs. These include, among others, reimbursement, cost and net income. This type of analysis requires a thorough understanding of the complex interactions between payers and providers of care and an understanding of accounting practices within the individual institution including the details of cost accounting. This minireview will address the essential components of the evaluation of financial outcomes in transplantation.

Randomized trial of a brief physiotherapy intervention compared with usual physiotherapy for neck pain patients: cost-effectiveness analysis

OBJECTIVES

To assess the cost-effectiveness of brief physiotherapy intervention versus usual physiotherapy management in patients with neck pain of musculoskeletal origin in the community setting.

METHODS

A cost-effectiveness analysis was conducted alongside a multicenter pragmatic randomized controlled clinical trial. Individuals 18 years of age and older with neck pain of more than 2 weeks were recruited from physiotherapy departments with referrals from general practitioners (GPs) in the East Yorkshire and North Lincolnshire regions in the United Kingdom. A total of 139 patients were allocated to the brief intervention, and 129 to the usual physiotherapy. Resource use data were prospectively collected on the number of physiotherapy sessions, hospital stay, specialist, and GP visits. Quality-adjusted life years (QALYs) were estimated using EQ-5D data collected at baseline, 3 and 12 months from the start of the treatment. The economic evaluation was conducted from the U.K. National Health System perspective.

RESULTS

On average, brief intervention produced lower costs (pounds--68; 95 percent confidence interval [CI], pounds--103 to pounds--35) and marginally lower QALYs (-0.001; 95 percent CI, -0.030 to 0.028) compared with usual physiotherapy, resulting in an incremental cost per QALY of pounds 68,000 for usual physiotherapy. These results are sensitive to patients' treatment preferences.

CONCLUSIONS

Usual physiotherapy may not be good value for money for the average individual in this trial but could be a cost-effective strategy for those who are indifferent toward which treatment they receive.

Addressing efficiency: economic evaluation and the agenda for CAM researchers

Considerations of efficiency are increasingly part of the broad agenda for evidence-based practice in conventional medicine. The findings of applied economic evaluations are often combined with other forms of evidence to assist clinical and wider resource decisions. It follows that as complementary and alternative medicine (CAM) strives for further integration into conventional health services, it might also be subjected to such scrutiny. In preparation for this, this paper provides a basic yet critical introduction to applied economic evaluation; the types of techniques used, their broad strengths and weaknesses, related ethical and moral debate and, in particular, specific issues concerning their application to CAM. Readers will decide for themselves whether they might be supportive of, or opposed to, economic evaluation and under what circumstances. Nevertheless, a wide-ranging agenda for research on economic evaluation and CAM is presented and some basic methodological and design issues--including place specificities and sensitivities--are highlighted.

What is the value of social values? The uselessness of assessing health-related quality of life through preference measures

Background

The use of preference-based measures in the evaluation of health outcomes has extended considerably over the last decade. Their alleged advantage over other types of general instruments in the evaluation of health related quality of life (HRQOL), supposedly lies in the fact that preference measures incorporate values or utilities that reflects the value of social preferences through health states. The objective of this study was to determine whether the use of social preference weights or utilities makes any real difference when calculating scores for the Euroqol (EQ5-D) questionnaire, a HRQOL preference-based measure.

Methods

Responses to the EQ5-D of a sample of 10,972 patients from 10 countries enrolled in an observational study of the treatment of schizophrenia in Europe were used for this purpose. Two different methods of scoring the EQ-5D where compared: 'weighting the items' of the questionnaire through the UK official weight coefficients, and 'non-weighting the items'. Pearson's, Spearman's, and two-way mixed parametric intraclass correlation coefficients were used to estimate the association of the scores obtained in both ways.

Results

The association between weighted and unweighted Euroqol scores was extremely high (Pearson's r = 0.91), as was the association between their ranks (Spearman's ρ = 0.93). The intraclass correlation coefficient obtained (0.89) also suggested that the concordance between the score distributions was prominent.

Conclusions

A non-weighted approach to score the EQ5-D is enough to explain a high proportion of variance in scores obtained through the use of utilities. The differential contribution of weights based on population preference values is therefore minimal and, in our opinion, negligible.

Economic evaluation of specialist cancer and palliative nursing: Macmillan Evalution Study findings

Economic evaluation of specialist nursing interventions is challenging because of the complex nature of interventions and the difficulty of describing nursing outcomes in simple ways. This article discusses data from a study of Macmillan specialist cancer nursing. Resource-use data and nursing-outcome data were collated from 76 case studies of patients referred to 12 specialist cancer and palliative nursing teams (home-based and hospital-based) in the UK. Specific outcomes related to nursing were defined, and cost and nursing outcome data were analysed together. The data suggested that patients who reported better nursing outcomes had a higher proportion of specialist nursing interventions than those reporting poor nursing outcomes (45% versus 25%). Also, the overall pattern of health-care use was different for those patients who reported positive nursing outcomes. This suggests that positive nursing outcomes can influence patients' access to other health services. The data supported specific hypotheses regarding ways that specialist nurses can influence the cost-effectiveness of care. These data do not constitute a comparative evaluation study, as no control group was identified. Such results are nevertheless important as this type of data has not been gathered previously.

Evaluation of health-related quality of life in low-income patients with COPD receiving long-term oxygen therapy

STUDY OBJECTIVE

To assess health-related quality of life (HRQL) in a low-income population of patients with hypoxemia and COPD receiving long-term oxygen therapy (LTOT).

DESIGN

Cross-sectional study.

SETTING

Large, tertiary care, university teaching hospital.

PATIENTS OR PARTICIPANTS

Thirty-six patients with COPD requiring LTOT (mean age, 63.5 years; mean FEV(1), 32.1% of predicted; PaO(2), 50.2 mm Hg) and 33 control subjects with COPD but no severe hypoxemia (mean age, 63.1 years; FEV(1), 35.7%; PaO(2), 66.5 mm Hg).

INTERVENTIONS

Patients underwent pulmonary function testing to assess physiologic function and the degree of respiratory impairment. A baseline dyspnea index (BDI) was used to determine levels of dyspnea, and a 6-min walk test was performed to evaluate physical performance and exercise capacity. The St. George Respiratory Questionnaire (SGRQ) and the Medical Outcomes Study Short-Form 36-item questionnaire (SF-36) were used to assess health status and HRQL.

MEASUREMENTS AND RESULTS

The scores on the SGRQ and SF-36 indicated severe impairment. Patients receiving LTOT showed a trend toward worse scores on most dimensions of the SGRQ and SF-36, but differences between groups were only statistically significant for the physical functioning and social functioning dimensions of the SF-36. Dyspnea, as measured by the BDI, significantly correlated with all questionnaire domains except the SF-36 pain index.

CONCLUSIONS

The HRQL of these low-income patients with COPD was markedly impaired, with more pronounced impairment in those receiving LTOT. The severity of dyspnea was a significant predictor of various components of quality of life in these patients.

Being economical with the truth: how to make your idea appear cost effective

The importance of presentation and evaluation of economic data with regard to the cost effectiveness of a health care intervention are discussed.

Cost effectiveness analysis of intravenous ketorolac and morphine for treating pain after limb injury: double blind randomised controlled trial

OBJECTIVES

To investigate the cost effectiveness of intravenous ketorolac compared with intravenous morphine in relieving pain after blunt limb injury in an accident and emergency department.

DESIGN

Double blind, randomised, controlled study and cost consequences analysis.

SETTING

Emergency department of a university hospital in the New Territories of Hong Kong.

PARTICIPANTS

148 adult patients with painful isolated limb injuries (limb injuries without other injuries).

MAIN OUTCOME MEASURES

Primary outcome measure was a cost consequences analysis comparing the use of ketorolac with morphine; secondary outcome measures were pain relief at rest and with limb movement, adverse events, patients' satisfaction, and time spent in the emergency department.

RESULTS

No difference was found in the median time taken to achieve pain relief at rest between the group receiving ketorolac and the group receiving morphine, but with movement the median reduction in pain score in the ketorolac group was 1.09 per hour (95% confidence interval 1.05 to 2.02) compared with 0.87 (0.84 to 1.06) in the morphine group (P=0.003). The odds of experiencing adverse events was 144.2 (41.5 to 501.6) times more likely with morphine than with ketorolac. The median time from the initial delivery of analgesia to the participant leaving the department was 20 (4.0 to 39.0) minutes shorter in the ketorolac group than in the morphine group (P=0.02). The mean cost per person was $HK44 ( pound4; $5.6) in the ketorolac group and $HK229 in the morphine group (P<0.0001). The median score for patients' satisfaction was 6.0 for ketorolac and 5.0 for morphine (P<0.0001).

CONCLUSION

Intravenous ketorolac is a more cost effective analgesic than intravenous morphine in the management of isolated limb injury in an emergency department in Hong Kong, and its use may be considered as the dominant strategy.