Abstract：
:Although CHF has been considered a risk factor for venous thromboembolism, this has not been directly studied. We hypothesized that congestive heart failure would increase the risk of venous thromboembolism in an outpatient population, and that this risk would increase as patients' ventricular function worsened. We conducted a case-control study to examine whether CHF due to left ventricular dysfunction was an independent risk factor for acute venous thromboembolism in outpatients, once established risk factors such as recent surgery and prior venous thromboembolism are taken into account. We reviewed 106 cases of DVT and 603 controls, admitted for diabetes mellitus or infection, matched for month of admission at a VA hospital. Assignment of a diagnosis of venous thromboembolism required a definitive test, as did classification as CHF. In a logistic regression model CHF was an independent predictor of venous thromboembolism. A second logistic regression model showed that the risk of venous thromboembolism increased as the ejection fraction (EF) decreased, with an EF < 20 associated with a venous thromboembolism OR of 38.3 (95% CI 9.6, 152.5). CHF is an independent risk factor for venous thromboembolism, and the risk increases markedly as the EF decreases. These results support the use of anticoagulation in selected patients with CHF.
journal_name
J Clin Epidemioljournal_title
Journal of clinical epidemiologyauthors
Howell MD,Geraci JM,Knowlton AAdoi
10.1016/s0895-4356(00)00373-5subject
Has Abstractpub_date
2001-08-01 00:00:00pages
810-6issue
8eissn
0895-4356issn
1878-5921pii
S0895-4356(00)00373-5journal_volume
54pub_type
杂志文章abstract：:We analyzed data from outpatients with chronic low back pain (LBP) in the Veterans Health Study (n = 563) to examine the relationship between localized LBP intensity and radiating leg pain in assessing patient functional status, low back disability, and use of diagnostic imaging. Based on the localized LBP intensity, ...
journal_title：Journal of clinical epidemiology
pub_type： 临床试验,杂志文章,多中心研究
doi：10.1016/s0895-4356(99)00094-3
更新日期：1999-11-01 00:00:00
abstract：:Outcome measures are rapidly becoming standard tools in the assessment of clinical effectiveness and in the measurement of health status in populations. In this article we document the development of a self-administered Chinese version of the Medical Outcomes Study 36-Item Short-Form Health Survey (SF-36) and report t...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/s0895-4356(98)00104-8
更新日期：1998-11-01 00:00:00
abstract：:Numerous studies have shown that the symptoms of angina pectoris are more prevalent in women than men, than other manifestations of coronary heart disease, with the greatest discrepancies at younger ages. Variation in symptom reliability between genders could be a potential explanation for these differences. The Lipid...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/0895-4356(91)90009-x
更新日期：1991-01-01 00:00:00
abstract：:The incidence and mortality due to the major cancers such as lung, breast, colon-rectum, prostate, and ovary have changed very little over the past 20-30 years, in spite of the introduction of important new treatments and apparent prolongation of survival of patients with these cancers. The new strategies focus on ear...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/0895-4356(94)90205-4
更新日期：1994-06-01 00:00:00
abstract：OBJECTIVES:To revise 2010 guidance on grading the strength of evidence (SOE) of the effectiveness of drugs, devices, and other preventive and therapeutic interventions in systematic reviews produced by the Evidence-based Practice Center (EPC) program, established by the US Agency for Healthcare Research and Quality (AH...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2014.11.023
更新日期：2015-11-01 00:00:00
abstract：OBJECTIVES:To study the statistical power of randomized clinical trials and examine developments over time. STUDY DESIGN AND SETTING:We analyzed the statistical power in 136,212 clinical trials between 1975 and 2014 extracted from meta-analyses from the Cochrane database of systematic reviews. We determined study powe...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2018.06.014
更新日期：2018-10-01 00:00:00
abstract：OBJECTIVE:In some trials, the intervention is delivered to individuals in groups, for example, groups that exercise together. The group structure of such trials has to be taken into consideration in the analysis and has an impact on the power of the trial. Our aim was to provide optimal methods for the design and analy...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2011.05.007
更新日期：2012-02-01 00:00:00
abstract：OBJECTIVES:To develop a scale and survey the measurement of patient adherence and patient recruitment, and to explore how these methods impact the results in randomized controlled trials of interventions to improve patient adherence to medications. STUDY DESIGN:Analytic survey of a purposively selected sample of patie...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,评审
doi：10.1016/j.jclinepi.2014.06.008
更新日期：2014-10-01 00:00:00
abstract：BACKGROUND AND OBJECTIVE:There is a growing evidence base on methods to improve response rates in surveys among patients. This study aimed to determine the additional effect of two intensive follow-up procedures compared to a simple follow-up procedure. METHODS:Randomized controlled trial that compared repeated mailin...
journal_title：Journal of clinical epidemiology
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1016/j.jclinepi.2005.03.002
更新日期：2005-09-01 00:00:00
abstract：:A summary performance measure comprised of a hierarchical balance task, a 4-meter walk, and five repetitive chair stands is increasingly being used as a predictor of independent living for older persons. The reliability and sensitivity to change of this summary performance measure have not been investigated, however. ...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/s0895-4356(02)00436-5
更新日期：2002-09-01 00:00:00
abstract：OBJECTIVE:We examined whether a breast cancer risk prediction model other than the Gail et al. model performs better at discriminating between women who will and who will not develop the disease. METHODS:We applied the two published versions of the Rosner and Colditz log-incidence model of breast cancer, developed on ...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/s0895-4356(03)00124-0
更新日期：2003-09-01 00:00:00
abstract：OBJECTIVES:The aim of this study was to evaluate how frequently complex interventions are shown to be superior to routine care in general practice-based cluster-randomized controlled studies (c-RCTs) and to explore whether potential differences explain results that come out in favor of a complex intervention. STUDY DE...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,评审
doi：10.1016/j.jclinepi.2017.10.010
更新日期：2018-02-01 00:00:00
abstract：OBJECTIVES:This study investigated trial consultations to identify whether and to what extent discussions of retention are present. STUDY DESIGN AND SETTING:This embedded mixed-methods study design included a purposive sample of audio-recorded trial consultations obtained from four sites of a large multicenter UK-base...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2020.03.011
更新日期：2020-07-01 00:00:00
abstract：OBJECTIVES:To investigate the application of the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) approach and the quality of evidence ratings in systematic reviews of complex interventions. STUDY DESIGN AND SETTING:This study examined all 40 systematic reviews published in three Cochrane Rev...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,评审
doi：10.1016/j.jclinepi.2016.03.014
更新日期：2016-10-01 00:00:00
abstract：OBJECTIVES:In a twinning partnership between the Canadian Society for International Health and Kazakhstan's Ministry of Health, a project to build capacity and a process for the adaptation and implementation of international clinical practice guidelines (CPGs) was undertaken. STUDY DESIGN AND SETTING:A pragmatic CPG a...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2015.05.001
更新日期：2016-01-01 00:00:00
abstract：:Criterion validity studies sometimes use designs with test-based enrollment schemes. In such incomplete studies, a Reference Instrument (RI) is applied to unequal sampling fractions of subjects previously identified as positives or negatives by a new Test Instrument (TI+ and TI-). Focusing on sensitivity (Se) and spec...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/s0895-4356(03)00162-8
更新日期：2003-10-01 00:00:00
abstract：OBJECTIVE:To determine whether zinc with oral rehydration solution (ORS) is more cost effective than ORS alone in the treatment of acute diarrhea. STUDY DESIGN AND SETTING:Cost-effectiveness analysis among patients consulting the emergency room of a government institution. METHOD:Cost of treatment and outcome of part...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.jclinepi.2006.08.004
更新日期：2007-06-01 00:00:00
abstract：BACKGROUND AND OBJECTIVES:To characterize the impact of multiple Institutional Review Board (IRB) reviews on multicenter observational research studies, and identify strategies for overcoming the identified challenges. MATERIALS AND METHODS:Using PubMed, we identified empirical studies, anecdotal reports, and opinion ...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,评审
doi：10.1016/j.jclinepi.2005.11.018
更新日期：2006-08-01 00:00:00
abstract：:Epidemiologists and health survey statisticians must be aware of their many responsibilities to study participants during all phases of the investigation. Safeguards for the subject's welfare and privacy must be considered during the planning of the study, recruitment of participants, conducting the interviews or exam...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/0895-4356(91)90179-d
更新日期：1991-01-01 00:00:00
abstract：:To assess the accuracy of Bayesian probability analysis for the prediction of coronary artery disease, post-test probabilities were generated by the application of three Bayesian algorithms to the clinical and noninvasive test results of 199 patients undergoing angiography in a veterans' hospital. All assumed conditio...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/0895-4356(88)90065-0
更新日期：1988-01-01 00:00:00
abstract：:Remaining questions relative to the measurement of health-state preferences are outlined and applications discussed. We recommend more widespread use of functional measurement to better understand preference structures. Further research should be conducted on the reliability and validity of preference values produced ...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,评审
doi：10.1016/0895-4356(89)90011-5
更新日期：1989-01-01 00:00:00
abstract：OBJECTIVE:Citations by other researchers are important in the dissemination of research findings. We aimed to investigate whether preferential citation of statistically significant articles exists in the psychiatric literature. STUDY DESIGN AND SETTINGS:We analyzed all original research papers published in 1996 in fou...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2006.11.014
更新日期：2007-09-01 00:00:00
abstract：:The study assesses the reliability, validity and responsiveness of the UK version of the Seattle Angina Questionnaire (SAQ-UK). The instrument was anglicised and administered by self-completed postal questionnaire to 959 patients recruited from general practices in the North East of England. A total of 655 (68.3%) pat...
journal_title：Journal of clinical epidemiology
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1016/s0895-4356(01)00352-3
更新日期：2001-09-01 00:00:00
abstract：OBJECTIVE:To provide information concerning the magnitude of the intraclass correlation coefficient (ICC) for cluster-based studies set in primary care. STUDY DESIGN AND SETTING:Reanalysis of data from 31 cluster-based studies in primary care to estimate intraclass correlation coefficients from random effects models u...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,meta分析,评审
doi：10.1016/j.jclinepi.2003.12.013
更新日期：2004-08-01 00:00:00
abstract：OBJECTIVE:In some publications, the terms "precision" and "accuracy" are used as if they were synonyms for "reliability" and "validity." METHODS AND RESULTS:This article shows that these terms are neither precise nor accurate when used in this way. Scales can demonstrate high test-retest or interrater reliability (i.e...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,评审
doi：10.1016/j.jclinepi.2005.09.005
更新日期：2006-04-01 00:00:00
abstract：BACKGROUND AND OBJECTIVE:This study describes the conceptual foundation and psychometric properties of the Burden of Stroke Scale (BOSS), a patient-reported health status assessment designed to quantify the physical, cognitive, and psychological burden of stroke. METHODS:Qualitative research methods were used to devel...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2003.11.016
更新日期：2004-10-01 00:00:00
abstract：:The occurrence and number of melanocytic nevi are among the most important known risk factors for the development of malignant melanoma. Studying the causes of nevi should lead to successful strategies in the prevention of melanoma. Among 11,478 white German children of preschool age the association between benign mel...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/s0895-4356(02)00484-5
更新日期：2002-11-01 00:00:00
abstract：:A standardized examination protocol was developed for the assessment of low back disorders in primary care. The protocol was found feasible in the occupational health service setting. The interexaminer repeatability between an occupational physician and an occupational physiotherapist was good for most items. The pred...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/s0895-4356(97)00266-7
更新日期：1998-03-01 00:00:00
abstract：:In middle-aged people, social class is one of the strongest predictors of mortality. However, to date, research prospectively evaluating the relationship between social class and mortality in the older persons has produced conflicting results. This may be due to the lack of clinical covariates in many analyses. The ob...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/s0895-4356(02)00464-x
更新日期：2002-10-01 00:00:00
abstract：:The Busselton Survey is a population survey that is held about every three years. In 1994-1995 a re-survey was held of all past participants and 8,502 attended. Financial constraints precluded employing staff for data collection for blood pressure and anthropometry, these therefore were collected by unpaid lay volunte...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/s0895-4356(01)00492-9
更新日期：2002-04-01 00:00:00
