Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 19 de 19
Filtrar
1.
J Gen Intern Med ; 2024 Feb 06.
Artigo em Inglês | MEDLINE | ID: mdl-38321315

RESUMO

BACKGROUND: Direct-to-consumer (DTC) pharmacies sell generic prescription drugs, often at lower prices than traditional retail pharmacies; however, not all drugs are available, and prices vary. OBJECTIVE: To determine the availability and cost of generic drugs at DTC pharmacies. DESIGN: Cross-sectional study. SETTING: Five national DTC pharmacies in April and May 2023. PARTICIPANTS: Each qualifying form of 100 generic drugs with the highest cost-per-patient (expensive) and the 50 generic drugs with the highest number of patients (common) in Medicare Part D in 2020 MAIN MEASURES: Availability of these drugs and the lowest DTC pharmacy price for a standardized drug strength and supply (e.g., 30 pills), compared to GoodRx retail pharmacy prices. KEY RESULTS: Of the 118 expensive generic dosage forms, 94 (80%) were available at 1 or more DTC pharmacies; out of 52 common generic dosage forms, 51 (98%) were available (p < 0.001). Of the 88 expensive generics available in comparable quantities and strengths across pharmacies, 42 (47%) had the lowest cost at Amazon, 23 (26%) at Mark Cuban Cost Plus Drug Company, 13 (14%) at Health Warehouse, and 12 (13%) at Costco; for 51 common generic formulations, 16 (31%) had the lowest cost at Costco, 14 (27%) at Amazon, 10 (20%) at Walmart, 6 (12%) at Health Warehouse, and 5 (10%) at Mark Cuban Cost Plus Drug Company. For the 77 expensive generics with available GoodRx retail pharmacy prices, the median cost savings at DTC pharmacies were $231 (95% CI, $129-$792) or 76% (IQR, 53-91%); for 51 common generics, savings were $19 (95% CI, $10-$34) or 75% (IQR, 67-83%). CONCLUSIONS: Many of the most expensive generic drugs are unavailable at direct-to-consumer pharmacies. Meanwhile, less expensive, commonly used generics are widely available, but drug prices vary by pharmacy and savings are modest, requiring patients to shop around for the lowest cost.

2.
Am Soc Clin Oncol Educ Book ; 43: e397912, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-37433102

RESUMO

Chimeric antigen receptor (CAR) T-cells are a cellular immunotherapy with remarkable efficacy in treating multiple hematologic malignancies but they are associated with extremely high prices that are, for many countries, prohibitively expensive. As their use increases both for hematologic malignancies and other indications, and large numbers of new cellular therapies are developed, novel approaches will be needed both to reduce the cost of therapy, and to pay for them. We review the many factors that lead to the high cost of CAR T-cells and offer proposals for reform.


Assuntos
Neoplasias Hematológicas , Receptores de Antígenos Quiméricos , Humanos , Receptores de Antígenos Quiméricos/genética , Neoplasias Hematológicas/terapia , Imunoterapia , Linfócitos T
3.
Health Aff (Millwood) ; 42(5): 642-649, 2023 05.
Artigo em Inglês | MEDLINE | ID: mdl-37126755

RESUMO

In July 2012, tenofovir disoproxil fumarate-emtricitabine (TDF-FTC, brand name Truvada) was approved by the Food and Drug Administration (FDA) to prevent HIV infection. To estimate the extent of the US government's direct financial contribution to the discovery and development of Truvada, we identified National Institutes of Health awards using FDA documents, peer-reviewed literature, patent records, court filings, and other publicly available materials. We classified seventy-three federal government awards to eleven researchers as being directly linked to the development and clinical testing of Truvada for prevention therapy, through which the US government spent an estimated $143 million. The substantial public funding raises questions about the high price charged by the drug's manufacturer, which reduced its affordability and limited its accessibility as HIV preventive therapy.


Assuntos
Fármacos Anti-HIV , Infecções por HIV , Humanos , Infecções por HIV/tratamento farmacológico , Fármacos Anti-HIV/uso terapêutico , Combinação Emtricitabina e Fumarato de Tenofovir Desoproxila/uso terapêutico , Preparações Farmacêuticas , Emtricitabina/uso terapêutico , Tenofovir/uso terapêutico
4.
J Trauma Acute Care Surg ; 94(1): 93-100, 2023 01 01.
Artigo em Inglês | MEDLINE | ID: mdl-35546248

RESUMO

BACKGROUND: Patient-physician communication is key to better clinical outcomes and patient well-being. Communication between trauma patients and their physicians remains relatively unexplored. We aimed to identify and characterize the range of strengths and challenges in patient-physician communication in the setting of trauma care. METHODS: A qualitative, grounded theory approach was used to explore communication strengths and challenges for patients and residents. Patients previously admitted to the trauma service for violent injuries were recruited and interviewed in-person during their trauma clinic appointments. Surgical residents were recruited via email and interviewed virtually via Zoom. Anonymous, semistructured interviews were conducted until thematic saturation was reached. RESULTS: Twenty-nine interviews with patients and 14 interviews with residents were conducted. Patients reported feeling ignored and misunderstood and having inadequate communication with physicians. Residents cited lack of time, patients' lack of health literacy, differences in background, and emotional responses to trauma as barriers to effective communication with patients. Patients and residents reported an understanding of each other's stressors, similar emotional experiences regarding traumatic stress, and a desire to communicate with each other in greater depth both inside and outside of the hospital. CONCLUSION: Trauma patients and residents can feel disconnected due to the lack of time for thorough communication and differences in background; however, they understand each other's stressors and share similar emotional responses regarding trauma and a desire for increased communication, connection, and solidarity. Leveraging these shared values to guide interventions, such as a resident curriculum, may help bridge disconnects and improve their communication. LEVEL OF EVIDENCE: Therapeutic/Care Management; Level IV.


Assuntos
Internato e Residência , Médicos , Humanos , Comunicação , Médicos/psicologia , Relações Médico-Paciente , Hospitais
5.
J Law Med Ethics ; 50(2): 380-384, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35894560

RESUMO

Gene therapies to treat sickle cell disease are in development and are expected to have high costs. The large eligible population size - by far, the largest for a gene therapy - poses daunting budget challenges and threatens to exacerbate health disparities for Black patients, who make up the vast majority of American sickle cell patients.


Assuntos
Anemia Falciforme , Medicina Molecular , Anemia Falciforme/terapia , Comércio , Custos e Análise de Custo , Terapia Genética , Humanos , Estados Unidos
6.
Trauma Surg Acute Care Open ; 7(1): e000955, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35719190

RESUMO

Sickle cell trait (SCT) has historically been considered a benign condition, but SCT-positive patients have increased baseline risk of venous thromboembolism and chronic kidney disease, as well as increased risk of sickled erythrocytes in settings of hypoxia, acidosis, and hypovolemia. Multisystem traumatic injuries are a common clinical scenario, in which hypoxia, acidosis, and hypovolemia occur; however, little is known about how SCT-positive status impacts outcomes in multisystem trauma. We conducted a scoping literature review to investigate what was known about SCT in the setting of multisystem trauma. In the 110+ years that sickle cell hemoglobinopathies have been known, only three studies have ever examined the relationship between SCT and multisystem traumas. All three articles were case reports. None of the articles intentionally measured the association between SCT and multisystem trauma outcomes; they only incidentally captured information on SCT. Our article then examines historical reasons why so little research has studied the pathophysiology of the multisystem trauma in patients with SCT. Among the reasons is that historical and logistical factors have long prevented patients from knowing their SCT-status: historical discriminations against SCT-positive patients in the 1960s and 1970s delayed federal mandating of SCT newborn screening until 2006, whereas difficulties communicating known SCT-status to afflicted children also contributed to lack of patient knowledge. In light of our findings, we offer specific calls to action for the trauma surgery research community: (1) consider testing for SCT in trauma patients that have unexpected complications, particularly venous thromboembolism, rhabdomyolysis, or renal failure and (2) support research to understand how SCT impacts multisystem trauma outcomes. We also offer specific guidelines about how to 'proceed with caution' in implementation of these goals in light of the troubled history of SCT testing and policy in the USA.

7.
Health Aff (Millwood) ; 40(5): 772-778, 2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-33939506

RESUMO

List prices for brand-name drugs have risen steeply, often despite the introduction of competition from other brand-name drugs in the same therapeutic class. List prices, however, do not reflect any rebates that manufacturers provide payers. To understand how net prices (after rebates and other discounts) respond to competition, we compared changes in inflation-adjusted, revenue-weighted mean list and net prices of a one-month supply of three classes of diabetes drugs: glucagon-like peptide 1 (GLP1) agonists, dipeptidyl peptidase 4 (DPP4) inhibitors, and sodium glucose cotransporter 2 (SGLT2) inhibitors. These drug classes each had several brand-name products enter the market between 2005 and 2017. The annualized change in list price over this period was $75 (15 percent) for GLP1 agonists, $22 (8 percent) for DPP4 inhibitors, and $41 (11 percent) for SGLT2 inhibitors. In contrast, the annualized change in net price was $38 (10 percent) for GLP1 agonists, -$3 (-2 percent) for DPP4 inhibitors, and -$17 (-9 percent) for SGLT2 inhibitors, suggesting a variable impact of brand-name competition on net prices.


Assuntos
Diabetes Mellitus , Preparações Farmacêuticas , Custos de Medicamentos , Humanos , Hipoglicemiantes
8.
Drug Saf ; 44(3): 327-335, 2021 03.
Artigo em Inglês | MEDLINE | ID: mdl-33206339

RESUMO

INTRODUCTION: Risk evaluation and mitigation strategy (REMS) programs are intended to improve safe use of US Food and Drug Administration-approved drugs. However, controversy exists over whether they consistently accomplish this goal. OBJECTIVE: We aimed to assess how initiation of the erythropoiesis stimulating agents (ESAs) darbepoetin alfa and epoetin alfa changed following implementation and enforcement (following a 1-year post-implementation grace period) of a prominent REMS program warning physicians against use in cancer patients with hemoglobin above 10 g/dL. METHODS: Using claims data from a large US commercial insurance company, we conducted interrupted time-series analyses of darbepoetin alfa and epoetin alfa initiation among adult cancer patients in the 12 months before REMS program implementation, after REMS program implementation, and after REMS program enforcement. We also evaluated differences in inappropriate initiation (hemoglobin tests all above 10 g/dL in the prior month) between the periods. RESULTS: In total, we identified 3456 darbepoetin alfa initiators and 2632 epoetin alfa initiators. Over the study period, the monthly number of initiators per 100,000 patients with cancer fell from 119 to 32 for darbepoetin alfa and from 82 to 34 for epoetin alfa. However, non-significant post-REMS program implementation level and slope changes per 100,000 adult patients with cancer were observed for darbepoetin alfa (level 0.03 [95% confidence interval (CI) -14.98 to 15.05]; slope 1.94 [95% CI -0.22 to 4.10]) and epoetin alfa (level -4.10 [95% CI -16.85 to 8.65]; slope -0.52 [95% CI -2.35 to 1.32]). Non-significant post-REMS program enforcement level and slope changes were also seen for both drugs (darbepoetin alfa level 1.58 [95% CI -0.58 to 3.74, slope -0.28 [95% CI -15.29 to 14.73]; epoetin alfa level 1.58 (95% CI -0.26 to 3.42], slope 5.74 [95% CI -7.01 to 18.49]). Finally, non-significant changes in inappropriate darbepoetin alfa (60% vs. 53% vs. 57%, p = 0.68) and epoetin alfa (53% vs. 53% vs. 46%, p = 0.41) initiation were observed between the three study periods. CONCLUSION: REMS program implementation and enforcement were not associated with significant changes in ESA initiation, adding to concerns over the degree to which certain REMS programs enhance patient safety.


Assuntos
Anemia , Eritropoetina , Hematínicos , Neoplasias , Adulto , Anemia/tratamento farmacológico , Darbepoetina alfa/efeitos adversos , Epoetina alfa/efeitos adversos , Eritropoetina/efeitos adversos , Hematínicos/efeitos adversos , Hemoglobinas , Humanos , Neoplasias/tratamento farmacológico , Proteínas Recombinantes/efeitos adversos , Avaliação de Risco e Mitigação
9.
Drug Discov Today ; 26(1): 273-281, 2021 01.
Artigo em Inglês | MEDLINE | ID: mdl-33011345

RESUMO

The approval of sofosbuvir (Sovaldi) in 2013 transformed chronic hepatitis C virus (HCV) care, but its high cost was criticized in part because of reports of substantial public involvement in its development. We developed a methodology to assess the public's contribution through the National Institutes of Health (NIH) in developing sofosbuvir. Using key terms from the timeline of sofosbuvir, we identified articles in PubMed; linked them to federal funding using the NIH RePORTER; reviewed the title, organization, and investigator of each resulting award for relatedness; and converted related awards to 2018 US dollars. Of 6043 unique awards, we identified 29 that were directly (US$7.7 million) and 110 that were indirectly (US$53.2 million) related awards made to major academic institutions and companies engaged in the development of the drug. These findings indicate that public funding had a key role in developing sofosbuvir, with an estimated US$60.9 million provided in NIH funding.


Assuntos
Desenvolvimento de Medicamentos , Financiamento Governamental , Hepatite C Crônica/tratamento farmacológico , Sofosbuvir/economia , Antivirais/economia , Antivirais/farmacologia , Custos de Medicamentos , Desenvolvimento de Medicamentos/economia , Desenvolvimento de Medicamentos/métodos , Financiamento Governamental/métodos , Financiamento Governamental/estatística & dados numéricos , Humanos , National Institutes of Health (U.S.)/economia , Sofosbuvir/farmacologia , Estados Unidos
10.
JAMA Intern Med ; 180(9): 1165-1172, 2020 09 01.
Artigo em Inglês | MEDLINE | ID: mdl-32897384

RESUMO

Importance: Market exclusivity for daily injections of glatiramer acetate, a disease-modifying therapy for multiple sclerosis, expired in 2015. In 2014, the manufacturer launched an alternate 3-times-weekly version that was widely adopted, sustaining market dominance of brand-name glatiramer until late 2017. Objective: To estimate excess US spending associated with the transition from daily to 3-times-weekly glatiramer. Design, Setting, and Participants: This economic evaluation estimated total US glatiramer spending from January 1, 2011, to June 30, 2019, using a national cohort from 3 data sources that collectively represent approximately 40% of the US glatiramer market: Medicare Part D, Medicaid, and a claims database of commercially insured and Medicare Advantage patients. Exposures: Calendar quarter. Main Outcomes and Measures: Outcomes were quarterly US glatiramer spending, estimated as price × use. Manufacturer list prices for generic products and estimates of net (postrebate) prices for brand-name products were used. Linear regression and interrupted time series models were used to compare spending trends in 3 periods: before generic competition (2011-2015), during generic competition for daily glatiramer (2015-2017), and during generic competition for daily and 3-times-weekly glatiramer (2017-2019). Results: From 2011 to 2015, US glatiramer spending increased to $962 million per quarter and did not decrease with generic competition of only daily glatiramer (2015-2017). After generic competition began for 3-times-weekly glatiramer in 2017, prices decreased by 47% to 64%, and spending decreased to $508 million per quarter in 2019 (P < .001 for slope). The delay in decreased spending from 2015 to 2017 was associated with excess spending of $4.3 billion to $6.5 billion. Conclusions and Relevance: These findings suggest that 2.5 years of delayed generic competition related to introduction of a new version of branded glatiramer acetate was associated with $4.3 billion to $6.5 billion in excess spending. Extended market exclusivity from introducing a new version of an existing brand-name drug can yield manufacturer returns out of proportion to the level of investment or risk involved; more limited incentives could encourage incremental innovations to existing drugs at a lower societal cost.


Assuntos
Custos de Medicamentos , Medicamentos Genéricos/economia , Acetato de Glatiramer/economia , Gastos em Saúde , Imunossupressores/economia , Esclerose Múltipla/tratamento farmacológico , Esquema de Medicação , Acetato de Glatiramer/administração & dosagem , Humanos , Imunossupressores/administração & dosagem , Medicaid , Medicare Part D , Estados Unidos
12.
Circ Cardiovasc Qual Outcomes ; 12(11): e006073, 2019 11.
Artigo em Inglês | MEDLINE | ID: mdl-31707825

RESUMO

BACKGROUND: Recent court decisions have thrown into question the Food and Drug Administration's rules limiting manufacturer promotion of prescription drugs for unapproved uses. We assessed how providing pro forma disclosures or more descriptive evidence context about the data supporting an off-label claim affected physicians' beliefs about drug efficacy. METHODS AND RESULTS: In online and mailed surveys, we randomized national samples of board-certified, clinically active cardiologists, internists, and endocrinologists to receive 1 of 3 information scenarios about a hypothetical drug derived verbatim from excerpts on the website for Vascepa, a prescription fish oil for which Food and Drug Administration specially permitted off-label promotion after a manufacturer lawsuit. The scenarios presented information about the approved on-label indication (severe hypertriglyceridemia), off-label claim + pro forma disclaimers (suggestive but not conclusive evidence for use as an add-on to a statin for patients reaching low-density lipoprotein goal but with persistent moderate hypertriglyceridemia), and off-label claim + evidence context (eg, reports on 3 trials failing to demonstrate cardiovascular benefit of other triglyceride-lowering drugs for such patients). Among 686 respondents (48% response rate), 29% reported receiving off-label information about Vascepa (ie, use as an add-on to a statin) from the manufacturer, and 16% had prescribed it off-label for this purpose. Off-label prescribing was 5 times higher among physicians who received such off-label information (38% versus 7%, P<0.001). For the hypothetical drug, the proportion of physicians endorsing the unproven claim that the drug reduced cardiovascular risk was similar among those randomized to the on-label and off-label claim + pro forma disclaimers scenarios (35% versus 37% [95% CI, -6% to 11%]), but substantially lower among those randomized to the off-label claim + evidence context scenario (21% [95% CI, -24% to 7%]). CONCLUSIONS: Physicians who received company information about the unapproved use of Vascepa were more likely to report prescribing it off-label. Supplementing off-label claims with evidence context improved the prescribers' knowledge and reduced enthusiasm for the unproven, off-label indication of reducing cardiovascular risk.


Assuntos
Atitude do Pessoal de Saúde , Doenças Cardiovasculares/prevenção & controle , Rotulagem de Medicamentos , Educação Médica Continuada , Ácidos Graxos Ômega-3/uso terapêutico , Conhecimentos, Atitudes e Prática em Saúde , Hipertrigliceridemia/tratamento farmacológico , Hipolipemiantes/uso terapêutico , Uso Off-Label , Médicos/psicologia , Padrões de Prática Médica , Adulto , Publicidade , Doenças Cardiovasculares/diagnóstico , Doenças Cardiovasculares/etiologia , Tomada de Decisão Clínica , Ácidos Graxos Ômega-3/efeitos adversos , Feminino , Humanos , Hipertrigliceridemia/sangue , Hipertrigliceridemia/complicações , Hipertrigliceridemia/diagnóstico , Hipolipemiantes/efeitos adversos , Masculino , Marketing de Serviços de Saúde , Pessoa de Meia-Idade , Segurança do Paciente , Seleção de Pacientes , Medição de Risco , Fatores de Risco , Estados Unidos , United States Food and Drug Administration
13.
J Manag Care Spec Pharm ; 25(11): 1210-1224, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31663459

RESUMO

BACKGROUND: Step therapy policies that require prescribers to follow an ordered protocol for drug choices are widely used by public and private insurers to manage medication costs; however, the perceptions of prescribing physicians regarding these policies have not been studied. OBJECTIVE: To determine physician attitudes toward step therapy policies and the correlation of these beliefs with physician characteristics. METHODS: A sample of clinically active physicians specializing in internal medicine, cardiology, or endocrinology received a survey administered online or via mail. Five-point Likert scale questions assessed physicians' opinions of clinical, economic, and implementation elements of prior authorization policies; physician demographic characteristics; and the extent of their interactions with the pharmaceutical industry. RESULTS: 686 physicians (48%) responded to the survey, which was evenly divided among primary care physicians, endocrinologists, and cardiologists. Many respondents (70%) had interactions with industry, including receipt of meals or gifts and use of medication samples. Physicians reported that step therapy policies could improve the affordability of medication use (55% agree vs. 26% disagree) and its clinical appropriateness (59% agree vs. 19% disagree). By similar margins, however, physicians stated that step therapy policies were implemented inefficiently and inflexibly and often did not incorporate relevant patient-specific information. Physicians in subspecialties, especially endocrinology, and those who had interactions with the pharmaceutical industry were more likely to hold negative views of step therapy policies. CONCLUSIONS: Most physicians recognize the potential of step therapy to improve the quality and cost-effectiveness of prescribing, although interactions with industry may affect these opinions. Physician perception of ineffective implementation of these policies, however, undermines their acceptability. DISCLOSURES: The American Board of Internal Medicine (ABIM) funded the survey used in this study. The ABIM had no role in the design and conduct of the study or development and preparation of the manuscript. Survey honoraria was provided by the Consumers Union. Kesselheim and Avorn's work is funded by the Laura and John Arnold Foundation. Kesselheim is also supported by the Harvard-MIT Center for Regulatory Science, Arnold Ventures, and the Engelberg Foundation. Ross is employed by the ABIM. Fischer, Lu, and Tessema have nothing to disclose.


Assuntos
Custos e Análise de Custo/normas , Custos de Medicamentos/normas , Prescrições de Medicamentos/normas , Padrões de Prática Médica/normas , Medicamentos sob Prescrição/economia , Adulto , Redução de Custos/economia , Redução de Custos/normas , Custos de Medicamentos/estatística & dados numéricos , Prescrições de Medicamentos/estatística & dados numéricos , Feminino , Humanos , Medicina Interna/economia , Medicina Interna/organização & administração , Medicina Interna/normas , Medicina Interna/estatística & dados numéricos , Masculino , Pessoa de Meia-Idade , Médicos/estatística & dados numéricos , Padrões de Prática Médica/economia , Padrões de Prática Médica/organização & administração , Padrões de Prática Médica/estatística & dados numéricos , Melhoria de Qualidade , Inquéritos e Questionários/estatística & dados numéricos , Estados Unidos
14.
J Law Med Ethics ; 47(3): 357-361, 2019 09.
Artigo em Inglês | MEDLINE | ID: mdl-31560620

RESUMO

Biomarkers can be powerful tools to guide diagnosis, treatment, and research. However, prudent use of bio-markers requires formal validation efforts. Although the data needed for biomarker validation has traditionally been hard to access, new research initiatives can ease this process.


Assuntos
Biomarcadores , Congressos como Assunto , Humanos , Reprodutibilidade dos Testes , Terminologia como Assunto
15.
J Law Med Ethics ; 47(3): 430-441, 2019 09.
Artigo em Inglês | MEDLINE | ID: mdl-31560634

RESUMO

Drug Safety Communications (DSCs) are used by the Food and Drug Administration (FDA) to inform health care providers, patients, caregivers, and the general public about safety issues related to FDA-approved drugs. To assess patient knowledge of the messaging contained in DSCs related to the sleep aids zolpidem and eszopiclone, we conducted a large, cross-sectional patient survey of 1,982 commercially insured patients selected by stratified random sampling from the Optum Research Database who had filled at least two prescriptions for either zolpidem or eszopiclone between July 1, 2012 and June 30, 2013. Among the 594 respondents (32.7% response rate), two-thirds reported hearing generally about drug safety information prior to starting a new drug, with the remaining one-third "rarely" or "never" hearing such information. Providers and pharmacists were primary sources of drug safety information. Two-thirds of zolpidem users and half of eszopiclone users reported having heard about the related DSC messages, ability to accurately identify the major factual messages was limited (overall median 2 correct out of 5, with men and those reporting higher educational level scoring higher [2/5 vs. 1/5, p=0.001]). Respondents reacted to new drug safety information about their sleep aids by reporting that they would want to learn about alternative ways to help them sleep (70%) and seek out more information about the safety of their specific sleeping pill (59-78%). Opportunities may exist for the FDA to work with providers and pharmacies to help ensure the DSC information is more widely received and is more fully understood by those taking the affected medications.


Assuntos
Zopiclona/efeitos adversos , Comunicação em Saúde , Conhecimentos, Atitudes e Prática em Saúde , Medicamentos Indutores do Sono/efeitos adversos , Zolpidem/efeitos adversos , Adulto , Idoso , Estudos Transversais , Zopiclona/administração & dosagem , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Medicamentos Indutores do Sono/administração & dosagem , Inquéritos e Questionários , Estados Unidos/epidemiologia , United States Food and Drug Administration , Zolpidem/administração & dosagem
16.
JAMA Netw Open ; 2(8): e199570, 2019 08 02.
Artigo em Inglês | MEDLINE | ID: mdl-31469391

RESUMO

Importance: Noninferiority trials test whether a new intervention is not worse than the comparator by a given margin. Objectives: To study the characteristics of published randomized noninferiority trials in oncology with overall survival as an end point, to assess the association of justification and success in achieving noninferiority with the funding of these trials, and to evaluate the association of such trials with patient survival. Data Sources: A systematic search of PubMed and Google Scholar databases was conducted in March 2018, with no date restrictions. Study Selection: Randomized noninferiority trials of cancer drug therapies with overall survival as an end point were included. Trials of decision support, supportive care, and nondrug treatment in both arms were excluded. Data Extraction and Synthesis: This study followed the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines for meta-epidemiological studies. Studies were screened for eligibility criteria, and data on criteria for noninferiority, funding, success (achieving noninferiority), and hazard ratios with confidence intervals for overall survival were extracted. Hazard ratios for overall survival were pooled across trials using a random-effects model. Main Outcomes and Measures: Associations of the justification for using a noninferiority design and success in achieving noninferiority with the source of funding were assessed. Overall pooled hazard ratios and confidence intervals for overall survival were calculated. Results: Among 74 noninferiority trials of cancer drug therapies, 23 (31%; enrolling 21 437 patients) used overall survival as the primary end point. The noninferiority margins for the hazard ratio of overall survival ranged from 1.08 to 1.33. Noninferiority design was justified in 14 trials (61%) but not in 9 (39%). Overall, 18 trials (78%) concluded with a finding of noninferiority. Industry funding was associated with lack of justification for noninferiority design (P = .02, assessed using the Fisher exact test) but not with success in proving noninferiority (P = .80, assessed using the Fisher exact test). When the hazard ratios across the trials were pooled, there was no beneficial or detrimental association with overall survival, with a pooled hazard ratio of 0.97 (95% CI, 0.92-1.02). Conclusions and Relevance: The findings suggest that a substantial fraction of noninferiority trials in oncology, most of which are industry funded, lack justification for such a design. Greater attention to the use of noninferiority designs in randomized clinical trials of cancer drugs from local and national regulators is warranted.


Assuntos
Antineoplásicos/uso terapêutico , Estudos de Equivalência como Asunto , Neoplasias/tratamento farmacológico , Projetos de Pesquisa , Antineoplásicos/economia , Humanos , Modelos Estatísticos , Neoplasias/economia , Neoplasias/mortalidade , Apoio à Pesquisa como Assunto , Análise de Sobrevida , Resultado do Tratamento
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...