Abstract:
OBJECTIVES:Objective and indirect evidence was used to determine whether required author contribution forms were associated with a decrease in author counts in four major general medicine journals (British Medical Journal [BMJ], Journal of the American Medical Association [JAMA], Canadian Medical Association Journal [CMAJ], and the Lancet). The number of authors listed per article before and after the introduction of explicit author contribution requirements were counted and compared with that found for the New England Journal of Medicine (NEJM) that did not require such disclosure. The primary hypothesis was that author counts decreased more in the BMJ, CMAJ, JAMA, and the Lancet after introduction of the rules than they did in the NEJM. STUDY DESIGN AND SETTING:The number of authors listed per original research article published in the five general medical journals with the greatest 2004 Impact Factors in the first issue of each month in the years before and after introduction of required author contribution forms was compared. RESULTS:Introduction of the required author contribution forms by the four leading general medical journals did not result in a drop in the rate of increasing authors per article per year, or in the number of authors per article compared with the control. Overall, there was a trend of an increasing number of authors listed per article. CONCLUSION:Based on the presented objective and indirect evidence, required author contribution forms were not associated with a decrease in author counts.
journal_name
J Clin Epidemioljournal_title
Journal of clinical epidemiologyauthors
Baerlocher MO,Gautam T,Newton M,Tomlinson Gdoi
10.1016/j.jclinepi.2009.03.010subject
Has Abstractpub_date
2009-08-01 00:00:00pages
875-7issue
8eissn
0895-4356issn
1878-5921pii
S0895-4356(09)00082-1journal_volume
62pub_type
杂志文章abstract::The clinical correlates of advanced retinopathy were determined in a sample of 427 type II diabetic outpatients, aged 35 to 74 years, recruited in eight centers from all parts of France. The presence of retinopathy was assessed by fluorescein angiography with centralized interpretation. Advanced retinopathy (prolifera...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章,多中心研究
doi:10.1016/0895-4356(95)00582-x
更新日期:1996-06-01 00:00:00
abstract:OBJECTIVES:To determine which factors predict favorable results and positive conclusions in systematic reviews (SRs) and to assess the level of agreement between SR results and conclusions. STUDY DESIGN AND SETTING:A sample of 296 English SRs indexed in MEDLINE (November, 2004) was obtained. Two investigators independ...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2008.08.008
更新日期:2009-04-01 00:00:00
abstract:OBJECTIVE:Both randomized and observational studies commonly examine composite end points, but the literature on model development and criticism in this setting is limited. STUDY DESIGN AND SETTING:We examined approaches for evaluating heterogeneity in the effects of risk factors for different components of the end po...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2003.02.001
更新日期:2004-02-01 00:00:00
abstract::Prediction models are developed to aid health care providers in estimating the probability or risk that a specific disease or condition is present (diagnostic models) or that a specific event will occur in the future (prognostic models), to inform their decision making. However, the overwhelming evidence shows that th...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2014.11.010
更新日期:2015-02-01 00:00:00
abstract:OBJECTIVES:High quality harms data are necessary to appropriately assess the balance between benefits and harms of interventions. Little is known, however, about whether perceived methodological shortcomings are associated with lower estimates of harms. STUDY DESIGN AND SETTING:Studies reporting harms associated with ...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章,meta分析,评审
doi:10.1016/j.jclinepi.2006.02.021
更新日期:2007-01-01 00:00:00
abstract::Advances in laboratory techniques have led to a rapidly increasing use of biomarkers in epidemiological studies. Biomarkers of internal dose, early biological change susceptibility and clinical outcomes are used as proxies for investigating the interactions between external and/or endogenous agents and body components...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2011.07.010
更新日期:2011-12-01 00:00:00
abstract:OBJECTIVE:For people with dementia, the concept of quality of life (Qol) reflects the disease's impact on the whole person. Thus, Qol is an increasingly used outcome measure in dementia research. This systematic review was performed to identify available dementia-specific Qol measurements and to assess the quality of l...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章,评审
doi:10.1016/j.jclinepi.2015.08.002
更新日期:2016-02-01 00:00:00
abstract:OBJECTIVES:Adjudication committees (ACs) are recommended in randomized controlled trials (RCTs) to standardize the assessment of events. We aimed to assess the reporting and functioning of ACs (synonyms: clinical event committees, endpoint committees) in clinical trials. STUDY DESIGN AND SETTING:We searched five high-...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章,评审
doi:10.1016/j.jclinepi.2008.09.011
更新日期:2009-07-01 00:00:00
abstract::The evaluation of diagnostic tests attempts to obtain one or more statistical parameters which can indicate the intrinsic diagnostic utility of a test. Sensitivity, specificity and predictive value are not appropriate for this use. The likelihood ratio has been proposed as a useful measure when using a test to diagnos...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/0895-4356(88)90051-0
更新日期:1988-01-01 00:00:00
abstract::The purpose of this study was to relate the 1-year risk of death and development of acute myocardial infarction among diabetics with acute chest pain to whether they had a history of hypertension or not. All patients with a history of diabetes mellitus who, during 21 months, were admitted to the Emergency Room in Sahl...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/0895-4356(94)90174-0
更新日期:1994-07-01 00:00:00
abstract::Formulas are derived for determination of the number of patients needed in a prospective comparison of survival curves, when the control group patients have already been followed for some period. Although an explicit formula for the required sample size is not available, the computing is straightforward, and tables of...
journal_title:Journal of clinical epidemiology
pub_type: 临床试验,杂志文章
doi:10.1016/0895-4356(88)90025-x
更新日期:1988-01-01 00:00:00
abstract:OBJECTIVE:To compare methods commonly used to derive minimal important differences and recommend a rule for defining patients as clinically improved on the low back pain-specific Roland-Morris Disability Questionnaire (RMDQ). METHODS:447 primary care low back pain consulters completed a questionnaire at consultation a...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2005.03.018
更新日期:2006-01-01 00:00:00
abstract::This study aims to estimate the prevalence of Helicobacter pylori in Glasgow, and to provide a systematic analysis of factors associated with this prevalence. The data used are from a random population sample of 793 men and 838 women aged 25-64 years conducted in 1995. The prevalence is estimated to be 66% (95% confid...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/s0895-4356(99)00171-7
更新日期:2000-02-01 00:00:00
abstract:OBJECTIVES:To solicit experiences with and perceptions of rapid reviews from stakeholders, including researchers, policy makers, industry, journal editors, and health care providers. STUDY DESIGN AND SETTING:An international survey of rapid review producers and modified Delphi. RESULTS:Forty rapid review producers re...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2015.08.012
更新日期:2016-02-01 00:00:00
abstract:OBJECTIVES:To review James Jackson's analysis of bloodletting among pneumonitis patients at the newly founded Massachusetts General Hospital, in which he implemented the numerical method advocated by Pierre-Charles-Alexandre Louis. STUDY DESIGN AND SETTING:The study sample included 34 cases of clinically diagnosed pne...
journal_title:Journal of clinical epidemiology
pub_type: 传,历史文章,杂志文章
doi:10.1016/j.jclinepi.2014.10.013
更新日期:2015-04-01 00:00:00
abstract::The aim of this study was to evaluate interrater and intermodality agreement in assessing health status using the Health Utilities Index. A random sample from a Dutch cohort of 14-year-old Very Low Birth Weight children and their parents were invited to participate in a face-to-face (n = 150) or telephone (n = 150) in...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/s0895-4356(00)00317-6
更新日期:2001-05-01 00:00:00
abstract:OBJECTIVES:The aim of this study was to reanalyze and reinterpret data obtained in Paracetamol in Acute Low Back Pain (PACE), the first large randomized controlled trial evaluating the efficacy of paracetamol in acute low back pain, to assess the inferential reproducibility of the original conclusions. STUDY DESIGN AN...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1016/j.jclinepi.2020.01.010
更新日期:2020-05-01 00:00:00
abstract:OBJECTIVES:To develop a theory-led framework to inform reviewers' understanding of what, how, and why health care interventions may lead to differential effects across socioeconomic groups. STUDY DESIGN AND SETTING:A metaframework approach combined two theoretical perspectives (socioeconomic health inequalities and co...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2018.08.008
更新日期:2018-12-01 00:00:00
abstract::We performed analyses to examine the structure, validity, and responsiveness to change of the Marks Asthma Quality of Life Questionnaire (AQLQ), originally validated in Australia in a self-administered format, among 539 U.S. subjects with asthma. Subjects were interviewed twice by telephone over an 18-month period. Ba...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/s0895-4356(99)00026-8
更新日期:1999-07-01 00:00:00
abstract:OBJECTIVE:We examined the analytic validity of reported family history of hypertension and diabetes among siblings in the Seychelles. STUDY DESIGN AND SETTING:Four hundred four siblings from 73 families with at least two hypertensive persons were identified through a national hypertension register. Two gold standards ...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2003.10.008
更新日期:2004-05-01 00:00:00
abstract:OBJECTIVE:To determine which simple index of overweight and obesity is the best discriminator of cardiovascular risk factors. STUDY DESIGN AND SETTING:This is a meta-analysis of published literature. MEDLINE was searched. Studies that used receiver-operating characteristics (ROC) curve analysis and published area unde...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章,meta分析,评审
doi:10.1016/j.jclinepi.2007.08.012
更新日期:2008-07-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:Response bias may affect the result of surveys with <100% response rate. We applied methods commonly used in meta-analysis to ascertain the extent to which response bias affects multiwave survey results. METHODS:To test hypotheses of between-wave similarity, we used the Cochran-Armitage test f...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2004.11.027
更新日期:2005-08-01 00:00:00
abstract:OBJECTIVES:New evidence continues to emerge and requires attention after the release of a clinical practice guideline (CPG). The objective of this article is to describe the Document Assessment and Review (DAR) strategy designed to ensue that the CPGs remain current and their quality maintained and to present the resul...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2014.06.013
更新日期:2014-12-01 00:00:00
abstract::To assess fracture risk following bilateral oophorectomy, we conducted a population-based retrospective cohort study among the 463 Rochester, Minnesota women who underwent bilateral oophorectomy for benign ovarian conditions in 1950-1979. During 7220 person-years of observation, there appeared to be a modest increase ...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/0895-4356(96)00211-9
更新日期:1996-10-01 00:00:00
abstract::Pragmatic trials aim to inform clinical decision making by measuring the effect of a treatment in clinical practice. The purpose of the PRECIS-2 tool is to support in designing a truly pragmatic trial. We comment on a study by Forbes et al., who assessed the applicability of the PRECIS-2 tool. The tool will prove part...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2017.06.006
更新日期:2017-10-01 00:00:00
abstract:OBJECTIVES:The STAndards for Reporting studies of Diagnostic accuracy (STARD) for investigators and editors and the Quality Assessment of Diagnostic Accuracy Studies (QUADAS) for reviewers and readers offer guidelines for the quality and reporting of test accuracy studies. These guidelines address and propose some solu...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2008.02.007
更新日期:2009-04-01 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:OBJECTIVE:To determine the frequency of unpublished systematic reviews (SRs) and explore factors contributing to their occurrence. STUDY DESIGN AND SETTING:First or corresponding authors from a sample of SRs published in 2005 were asked to participate in a 26-item survey administered through the Internet, facsimile, a...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2008.09.014
更新日期:2009-06-01 00:00:00
abstract::The relation between alcoholic beverage consumption and bladder cancer risk was investigated using data from a case-control study conducted between 1985 and 1992 in two areas of northern Italy. Cases were 727 patients with incident, histologically confirmed bladder cancer, and controls 1,067 patients admitted to the s...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章,多中心研究
doi:10.1016/s0895-4356(02)00397-9
更新日期:2002-07-01 00:00:00
abstract:OBJECTIVES:To evaluate in how many cancer-related Cochrane reviews hazard ratio (HR)-based absolute effects in summary of findings (SoF) tables have been correctly calculated and reported. STUDY DESIGN AND SETTING:We identified all Cochrane cancer intervention reviews that reported an HR for at least one outcome and p...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章,评审
doi:10.1016/j.jclinepi.2018.12.006
更新日期:2019-04-01 00:00:00