Abstract:
BACKGROUND:Variants in genes involved in warfarin metabolism and sensitivity affect individual warfarin requirements and the risk for bleeding. Testing for these variant alleles might allow more personalized dosing of warfarin during the induction phase. In 2007, the U.S. Food and Drug Administration changed the labeling for warfarin (Coumadin, Bristol-Myers Squibb, Princeton, New Jersey), suggesting that clinicians consider genetic testing before initiating therapy. OBJECTIVE:To examine the cost-effectiveness of genotype-guided dosing versus standard induction of warfarin therapy for patients with nonvalvular atrial fibrillation. DESIGN:Markov state transition decision model. DATA SOURCES:MEDLINE searches and bibliographies from relevant articles of literature published in English. TARGET POPULATION:Outpatients or inpatients requiring initiation of warfarin therapy. The base case was a man age 69 years with newly diagnosed nonvalvular atrial fibrillation and no contraindications to warfarin therapy. TIME HORIZON:Lifetime. PERSPECTIVE:Societal. INTERVENTION:Genotype-guided dosing consisting of genotyping for CYP2C9*2, CYP2C9*3, and/or VKORC1 versus standard warfarin induction. OUTCOME MEASURES:Effectiveness was measured in quality-adjusted life-years (QALYs), and costs were in 2007 U.S. dollars. RESULTS:In the base case, genotype-guided dosing resulted in better outcomes, but at a relatively high cost. Overall, the marginal cost-effectiveness of testing exceeded $170 000 per QALY. On the basis of current data and cost of testing (about $400), there is only a 10% chance that genotype-guided dosing is likely to be cost-effective (that is, <$50 000 per QALY). Sensitivity analyses revealed that for genetic testing to cost less than $50 000 per QALY, it would have to be restricted to patients at high risk for hemorrhage or meet the following optimistic criteria: prevent greater than 32% of major bleeding events, be available within 24 hours, and cost less than $200. LIMITATION:Few published studies describe the effect of genotype-guided dosing on major bleeding events, and although these studies show a trend toward decreased bleeding, the results are not statistically significant. CONCLUSION:Warfarin-related genotyping is unlikely to be cost-effective for typical patients with nonvalvular atrial fibrillation, but may be cost-effective in patients at high risk for hemorrhage who are starting warfarin therapy.
journal_name
Ann Intern Medjournal_title
Annals of internal medicineauthors
Eckman MH,Rosand J,Greenberg SM,Gage BFdoi
10.7326/0003-4819-150-2-200901200-00005subject
Has Abstractpub_date
2009-01-20 00:00:00pages
73-83issue
2eissn
0003-4819issn
1539-3704pii
150/2/73journal_volume
150pub_type
杂志文章abstract:BACKGROUND:Persons with abdominal aortic aneurysm are more likely to have a higher prevalence of risk factors for and clinical manifestations of cardiovascular disease. It is unknown whether these factors explain the high mortality rate associated with abdominal aortic aneurysm. OBJECTIVE:To describe the risk for mort...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-134-3-200102060-00008
更新日期:2001-02-06 00:00:00
abstract:BACKGROUND:Dietary trans fat increases risk for coronary heart disease. In 2006, New York City (NYC) passed the first regulation in the United States restricting trans fat use in restaurants. OBJECTIVE:To assess the effect of the NYC regulation on the trans and saturated fat content of fast-food purchases. DESIGN:Cro...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-157-2-201207170-00004
更新日期:2012-07-17 00:00:00
abstract::Ninety-six patients with life-threatening ventricular arrhythmias refractory to two or more conventional agents were treated with amiodarone and followed for 6 to 40 months (mean, 15 months). Currently, 75 are alive and well. Seven patients died from nonarrhythmic and five from arrhythmic causes. Nonfatal arrhythmias ...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-98-5-577
更新日期:1983-05-01 00:00:00
abstract:BACKGROUND:Progress of diabetes care is a subject of public health concern. OBJECTIVE:To assess changes in quality of diabetes care in the United States by using standardized measures. DESIGN:National population-based, serial cross-sectional surveys. SETTING:National Health and Nutrition Examination Survey (1988-199...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-144-7-200604040-00005
更新日期:2006-04-04 00:00:00
abstract::In 1984, both the United Kingdom and the United States received recommendations from panels of experts specifically convened to consider the merits of Depo-Provera (depot medroxyprogesterone acetate [DMPA]) as a long-term contraceptive agent. This study compares the final reports written by these panels. We explore wh...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-106-6-886
更新日期:1987-06-01 00:00:00
abstract::Since 1969, medications have been provided to patients at the Johns Hopkins Hospital using a computer system that controls the entire medication process from entry of physician's order to hourly drug distribution. Special envelopes containing patient and dosage information are computer generated for each dose to be ad...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-83-3-342
更新日期:1975-09-01 00:00:00
abstract:STUDY OBJECTIVE:To determine the safety of withholding anticoagulant therapy in pregnant patients with clinically suspected deep-vein thrombosis who have negative results by serial impedance plethysmography. DESIGN:Prospective study evaluating prognosis by long-term follow-up to 3 months postpartum in all patients. S...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-112-9-663
更新日期:1990-05-01 00:00:00
abstract::A patient with bladder carcinoma metastatic to lung and brain died of pneumonia. Autopsy examination showed a confluent bronchopneumonia with several small abscesses and acute pyelonephritis with abscess formation. Legionella pneumophila, serogroup 4, was isolated in pure culture from lung tissue postmortem and was al...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-93-6-835
更新日期:1980-12-01 00:00:00
abstract::The indications for treating patients with subclinical hypothyroidism (normal serum thyroxine and free thyroxine levels, but elevated serum thyrotrophin levels) are poorly defined. In this study, 33 patients with subclinical hypothyroidism were randomly assigned in a double-blind manner to receive placebo or L-thyroxi...
journal_title:Annals of internal medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.7326/0003-4819-101-1-18
更新日期:1984-07-01 00:00:00
abstract:BACKGROUND:Adiponectin and resistin are recently discovered adipokines that may provide a molecular link between adiposity and type 2 diabetes. OBJECTIVE:To evaluate whether total and high-molecular-weight adiponectin and resistin are associated with future risk for type 2 diabetes, independent of obesity and other kn...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-149-5-200809020-00005
更新日期:2008-09-02 00:00:00
abstract:BACKGROUND:Two recent double-blind, randomized, controlled trials (RCTs) showed that oral steroids and nonsteroidal anti-inflammatory drugs have similar analgesic effectiveness for management of gout, but the trials had small sample sizes and other methodological limitations. OBJECTIVE:To compare the effectiveness and...
journal_title:Annals of internal medicine
pub_type: 杂志文章,多中心研究
doi:10.7326/M14-2070
更新日期:2016-04-05 00:00:00
abstract:OBJECTIVE:To determine which procedures nephrologists do in practice, where they learned the procedures, and how much training they recommend to achieve and maintain clinical competence in each. DESIGN:Mailed survey. PARTICIPANTS:A random sample of 700 members of the American College of Physicians who were identified...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-113-5-392
更新日期:1990-09-01 00:00:00
abstract::Access to information about clinical trials is important to researchers, health care professionals, and patients. Many have argued for the establishment of clinical trials registries, citing their substantial benefits. Although some registries do exist, it has been difficult to create comprehensive, easily accessible ...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-133-8-200010170-00013
更新日期:2000-10-17 00:00:00
abstract:OBJECTIVE:To define the temporal characteristics of cocaine-induced coronary vasoconstriction in humans and to assess the relation between cocaine-induced coronary vasoconstriction and the blood concentration of cocaine and its main metabolites. DESIGN:Randomized, double-blind, controlled clinical trial. SETTING:Card...
journal_title:Annals of internal medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.7326/0003-4819-116-7-556
更新日期:1992-04-01 00:00:00
abstract:BACKGROUND:A daily injection of low-molecular-weight heparin (LMWH) is often prescribed to women with unexplained recurrent pregnancy loss (RPL), although evidence suggesting a benefit is questionable. OBJECTIVE:To determine whether LMWH increases ongoing pregnancy and live-birth rates in women with unexplained RPL. ...
journal_title:Annals of internal medicine
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.7326/M14-2062
更新日期:2015-05-05 00:00:00
abstract::In recent years there has been increasing attention to the appropriate interpretation of a clinical study. One special concern has been the difficulty inherent in interpreting studies that were not statistically significant: Was the sample size sufficient to detect a clinically important effect if, in fact, it existed...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-99-2-248
更新日期:1983-08-01 00:00:00
abstract:BACKGROUND:Tobacco use is the leading cause of preventable death in the United States. PURPOSE:To review the effectiveness and safety of pharmacotherapy and behavioral interventions for tobacco cessation. DATA SOURCES:5 databases and 8 organizational Web sites were searched through 1 August 2014 for systematic review...
journal_title:Annals of internal medicine
pub_type: 杂志文章,评审
doi:10.7326/M15-0171
更新日期:2015-10-20 00:00:00
abstract:BACKGROUND:Despite extensive literature, the diagnostic role of d-dimer for deep venous thrombosis (DVT) or pulmonary embolism (PE) remains unclear, reflecting multiple d-dimer assays and concerns about differing sensitivities and variability. PURPOSE:To systematically review trials that assessed sensitivity, specific...
journal_title:Annals of internal medicine
pub_type: 杂志文章,meta分析,评审
doi:10.7326/0003-4819-140-8-200404200-00005
更新日期:2004-04-20 00:00:00
abstract:OBJECTIVE:To assess safety, pharmacokinetics, and in-vivo virologic activity of five different combination regimens of zidovudine and didanosine compared with zidovudine alone in patients with human immunodeficiency virus type 1 (HIV-1) infection. DESIGN:Open-label, partially randomized, dose-ranging study. SETTING:U...
journal_title:Annals of internal medicine
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.7326/0003-4819-119-8-199310150-00003
更新日期:1993-10-15 00:00:00
abstract:BACKGROUND:Bed alarm systems intended to prevent hospital falls have not been formally evaluated. OBJECTIVE:To investigate whether an intervention aimed at increasing bed alarm use decreases hospital falls and related events. DESIGN:Pair-matched, cluster randomized trial over 18 months. Nursing units were allocated b...
journal_title:Annals of internal medicine
pub_type: 杂志文章,随机对照试验
doi:10.7326/0003-4819-157-10-201211200-00005
更新日期:2012-11-20 00:00:00
abstract:BACKGROUND:Injection insulin therapy is not readily accepted by patients and many health care providers; therefore, less invasive options for insulin therapy are desirable. PURPOSE:To examine the efficacy, safety, and patient acceptability of inhaled insulin therapy in nonpregnant adults with diabetes mellitus. DATA ...
journal_title:Annals of internal medicine
pub_type: 杂志文章,meta分析
doi:10.7326/0003-4819-145-9-200611070-00009
更新日期:2006-11-07 00:00:00
abstract:OBJECTIVE:To describe the course of rheumatoid arthritis over 5 years in adults and to evaluate the effect of parenterally administered gold salts on that course. DESIGN:A prospective observational study of adults with rheumatoid arthritis. Data derived from annual interviews with patients from 1983 to 1988 and from p...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-114-6-437
更新日期:1991-03-15 00:00:00
abstract::During a 6-month period in 1983, Escherichia coli O157:H7 was isolated from 19 (15%) of 125 patients with grossly bloody diarrhea and 1 sibling with non-bloody diarrhea in the Calgary area. There was no clustering of the cases geographically or in time. All but 1 had clinical manifestations typical of hemorrhagic coli...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-101-6-738
更新日期:1984-12-01 00:00:00
abstract:BACKGROUND:The incidence of esophageal adenocarcinoma is increasing rapidly. Gastroesophageal reflux is a strong risk factor for this disease. The increase in incidence of esophageal adenocarcinoma coincided with the introduction of medications that promote reflux by relaxing the lower esophageal sphincter (LES), such ...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-133-3-200008010-00007
更新日期:2000-08-01 00:00:00
abstract:BACKGROUND:A common criticism of randomized, controlled trials (RCTs) is that the enrollment process may be highly selective and those who enroll may not represent persons in the general population. The recruitment process reported in published RCTs has not been systematically evaluated. OBJECTIVE:To determine whether...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-137-1-200207020-00007
更新日期:2002-07-02 00:00:00
abstract::Physician performance failures are not rare and pose substantial threats to patient welfare and safety. Few hospitals respond to such failures promptly or effectively. Failure to ensure the quality and safety of the performance of colleagues is a breach of medicine's fiduciary responsibility to the public. A major rea...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-144-2-200601170-00008
更新日期:2006-01-17 00:00:00
abstract:BACKGROUND:Chronic myelogenous leukemia (CML) is an indolent but ultimately fatal disease. Because the natural history of CML varies and quality of life with CML may be excellent until shortly before death, deciding whether and when to pursue unrelated donor bone marrow transplantation is often difficult. OBJECTIVE:To...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-127-12-199712150-00005
更新日期:1997-12-15 00:00:00
abstract:Background:Acute pancreatitis (AP) varies in severity, prompting development of systems aimed at predicting prognosis to help guide therapy. Although several prediction approaches are available, their test characteristics and clinical utility are not completely understood. Purpose:To evaluate the test characteristics ...
journal_title:Annals of internal medicine
pub_type: 杂志文章,评审
doi:10.7326/M16-0650
更新日期:2016-10-04 00:00:00
abstract::Neuropathologic and neurochemical studies of older adults with Down's syndrome and those with Alzheimer's disease reveal striking similarities. Genetic studies indicate that near relatives of patients with Alzheimer's disease are at increased risk of developing Alzheimer's disease, and the risk appears to be age speci...
journal_title:Annals of internal medicine
pub_type: 杂志文章,评审
doi:10.7326/0003-4819-103-4-566
更新日期:1985-10-01 00:00:00
abstract:BACKGROUND:Home-based primary care for homebound seniors is complex, and practice constraints are unique. No quality-of-care standards exist. OBJECTIVE:To identify process quality indicators that are essential to high-quality, home-based primary care. DESIGN:An expert development panel reviewed established and new qu...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-146-3-200702060-00008
更新日期:2007-02-06 00:00:00