Abstract：
OBJECTIVES:The objective of this study was to assess if there is evidence of publication bias in prognostic accuracy studies of middle cerebral artery (MCA) or cerebroplacental ratio (CPR) for adverse perinatal outcome. STUDY DESIGN AND SETTING:We queried PubMed, EMBASE, the Cochrane Library, and ClinicalTrials.gov and searched abstract books of five perinatal conferences (1989-2017). We included prognostic accuracy studies on MCA and/or CPR. Highest reported accuracy estimates, sample size, study design, and conclusion positivity were extracted and compared. RESULTS:We included 127 full-text articles and 51 conference abstracts, 29 of which had not been reported as full-text article. In conference abstracts not reported in full, median negative predictive value was significantly lower compared to full-text articles (0.79 [interquartile range 0.67-0.97] vs. 0.95 [0.89-0.99]; P < 0.001). No significant difference was identified for positive predictive value (0.62 vs. 0.59; P = 0.827), sensitivity (0.67 vs. 0.71; P = 0.159), and specificity (0.86 vs. 0.86; P = 0.632). Study design differed significantly as well (P = 0.030), with fewer prospective studies in conference abstracts not reported in full compared to full-text articles (28% vs. 54%). We found no significant differences in sample size or conclusion positivity. CONCLUSION:Possibly, a publication bias in previously published meta-analyses of MCA and CPR has led to overly generous estimates of prognostic performance.
journal_name
J Clin Epidemioljournal_title
Journal of clinical epidemiologyauthors
Vollgraff Heidweiller-Schreurs CA,Korevaar DA,Mol BWJ,Bax CJ,de Groot CJM,de Boer MA,Bossuyt PMMdoi
10.1016/j.jclinepi.2019.07.016subject
Has Abstractpub_date
2019-12-01 00:00:00pages
1-8eissn
0895-4356issn
1878-5921pii
S0895-4356(19)30374-9journal_volume
116pub_type
杂志文章,评审abstract：OBJECTIVES:To identify and summarize published systematic reviews that report results of meta-analyses that combined direct and indirect comparisons. STUDY DESIGN AND SETTING:Narrative review of mixed treatment comparisons (MTCs) reported in systematic reviews of health interventions. MEDLINE, MEDLINE In-Process, Emba...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,评审
doi：10.1016/j.jclinepi.2013.07.014
更新日期：2014-02-01 00:00:00
abstract：:To examine the effect of cancer histopathology on the relationship between estrogen-replacement therapy (ERT) use and breast cancer risk, we performed a case-control study of 109 postmenopausal women 45 years or older with in situ or invasive breast cancer matched to 545 controls. When in situ and invasive tumors were...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/s0895-4356(98)00116-4
更新日期：1998-12-01 00:00:00
abstract：UNLABELLED:To systematically investigate location bias of controlled clinical trials in complementary/alternative medicine (CAM). METHODS:Literature searches were performed to identify systematic reviews and meta-analyses, which were used to retrieve controlled clinical trials. Trials were categorised by whether they ...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/s0895-4356(99)00220-6
更新日期：2000-05-01 00:00:00
abstract：OBJECTIVES:Procedures for controlling the false positive rate when performing many hypothesis tests are commonplace in health and medical studies. Such procedures, most notably the Bonferroni adjustment, suffer from the problem that error rate control cannot be localized to individual tests, and that these procedures d...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,评审
doi：10.1016/j.jclinepi.2014.03.012
更新日期：2014-08-01 00:00:00
abstract：:The Program on the Surgical Control of the Hyperlipidemias (POSCH) was a secondary atherosclerosis intervention trial employing partial ileal bypass surgery as the intervention modality. For this report, we analyzed 105 subgroups in 35 variables in POSCH, chosen predominantly for their potential relationship to the ri...
journal_title：Journal of clinical epidemiology
pub_type： 临床试验,杂志文章,多中心研究,随机对照试验
doi：10.1016/0895-4356(94)00145-g
更新日期：1995-03-01 00:00:00
abstract：OBJECTIVES:The receiver operating characteristic curves (ROC curves) are often used to compare continuous diagnostic tests or determine the optimal threshold of a test; however, they do not consider the costs of misclassifications or the disease prevalence. The ROC graph was extended to allow for these aspects. STUDY ...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2015.01.003
更新日期：2015-07-01 00:00:00
abstract：BACKGROUND AND OBJECTIVE:Two methods for measuring insulin sensitivity, fasting plasma insulin (FPI) and homeostasis model assessment (HOMA) have been proposed for use in large epidemiological research and clinical practice. This project describes the range of observed values of the HOMA and FPI in a large sample of th...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2004.05.001
更新日期：2004-11-01 00:00:00
abstract：OBJECTIVES:To identify statistical methods for harmonization, the procedures aimed at achieving the comparability of previously collected data, which could be used in the context of summary data and individual participant data meta-analysis of cognitive measures. STUDY DESIGN AND SETTING:Environmental scan methods wer...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2014.09.003
更新日期：2015-02-01 00:00:00
abstract：OBJECTIVES:The objective of the study was to describe and compare current practices in developing guidelines about the use of healthcare-related tests and diagnostic strategies (HCTDS). STUDY DESIGN AND SETTING:We sampled 37 public health and clinical practice guidelines about HCTDS from various sources without langua...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,评审
doi：10.1016/j.jclinepi.2017.09.004
更新日期：2017-12-01 00:00:00
abstract：:A large sample of older participants of the Maastricht Aging Study (MAAS) were compared to drop-outs at the 3-year follow-up with respect to socio-demographic, health, and cognitive characteristics. In addition, the impact of selective drop-out on measures of cognitive change was examined. To this end, hypothetical sc...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/s0895-4356(01)00473-5
更新日期：2002-03-01 00:00:00
abstract：BACKGROUND AND OBJECTIVES:Podiatry (chiropody) services are one of the most frequently requested services in primary care. The elderly are given priority access to podiatry services in the UK blocking access for other priority groups. To evaluate the clinical and cost-effectiveness of a self-management program as a mea...
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(03)00197-5
更新日期：2003-11-01 00:00:00
abstract：:Core outcome sets (COSs) are agreed-on standardized sets of outcomes that should be minimally measured in all trials of a given disease. To enhance the uptake of COSs in trials, their generalizability should be increased by a change in the number and diversity of stakeholders involved in their development. Also, their...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2020.01.004
更新日期：2020-09-01 00:00:00
abstract：:From a database of 93,077 in-patient admissions, patients assigned to catastrophic, very severe, moderately severe, and average 30-day mortality risk categories (as defined in Medicare Hospital Mortality Information, 1989 release, from the Health Care Financing Administration (HCFA] were selected for study. These admi...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/0895-4356(91)90100-n
更新日期：1991-01-01 00:00:00
abstract：OBJECTIVE:To assess if predefined variables in study design, instrument type, and patient characteristics account for variance in reported retest reliability for the Oswestry Disability Index (ODI) and Roland-Morris Questionnaire (RMQ). A second aim was a more precise estimate of instrument reliability. STUDY DESIGN A...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,meta分析,评审
doi：10.1016/j.jclinepi.2012.06.024
更新日期：2013-03-01 00:00:00
abstract：OBJECTIVES:To evaluate meta-analyses with trial sequential analysis (TSA). TSA adjusts for random error risk and provides the required number of participants (information size) in a meta-analysis. Meta-analyses not reaching information size are analyzed with trial sequential monitoring boundaries analogous to interim m...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2007.10.007
更新日期：2008-08-01 00:00:00
abstract：OBJECTIVES:To determine the effectiveness of interventions designed to prevent or reduce publication and related biases. STUDY DESIGN AND SETTING:We searched multiple databases and performed manual searches using terms related to publication bias and known interventions against publication bias. We dually reviewed cit...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,评审
doi：10.1016/j.jclinepi.2015.01.008
更新日期：2015-07-01 00:00:00
abstract：:Randomized trials are the optimal approach for evaluations of treatment efficacy but may not always be feasible. We study the adequacy of the case-control design in evaluating efficacy in a situation where the investigated therapy, namely the administration of magnesium sulfate for the prevention of eclampsia in patie...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/s0895-4356(96)00421-0
更新日期：1997-04-01 00:00:00
abstract：OBJECTIVE:The use of then-test (retrospective pre-test) scores has frequently been proposed as a solution to potential confounding of change scores because of response shift, as it is assumed that then-test and post-test responses are provided from the same perspective. However, this assumption has not been formally te...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,多中心研究
doi：10.1016/j.jclinepi.2009.01.021
更新日期：2009-11-01 00:00:00
abstract：OBJECTIVES:The objective of this study was to analyze adequacy of judgments about risk of bias (RoB) for blinding of participants and personnel (performance bias) in Cochrane systematic reviews of randomized controlled trials (RCTs). STUDY DESIGN AND SETTING:We extracted judgments and supporting comments for performan...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2019.05.012
更新日期：2019-09-01 00:00:00
abstract：:Trialists argue about the usefulness of stratified randomization. For investigators designing trials and readers who use them, the argument has created uncertainty regarding the importance of stratification. In this paper, we review stratified randomization to summarize its purpose, indications, accomplishments, and a...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,评审
doi：10.1016/s0895-4356(98)00138-3
更新日期：1999-01-01 00:00:00
abstract：OBJECTIVES:The relative contributions of genetic and environmental variables to within-household clustering of quantitative traits in household surveys are poorly characterized. We estimated shared genetic and shared environmental contributions to within-household correlation for anthropometric variables and cardiovasc...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2006.02.015
更新日期：2006-11-01 00:00:00
abstract：OBJECTIVES:To compare the abilities of six validated comorbidity indices (Charlson index, cumulative illness rating scale [CIRS], index of coexistent diseases, Kaplan scale, geriatrics index of comorbidity [GIC], and chronic disease score) to predict adverse hospitalization outcomes (death during hospitalization, lengt...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2009.11.013
更新日期：2010-09-01 00:00:00
abstract：OBJECTIVE:This cohort study investigated potential clinical and biochemical predictors of subsequent preterm birth in women presenting with threatened preterm labor. STUDY DESIGN AND SETTING:Subjects were 218 pregnant women admitted to hospital with a diagnosis of threatened preterm labor at 22-36 weeks gestation. Exc...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2004.06.015
更新日期：2005-03-01 00:00:00
abstract：OBJECTIVES:Constructs capturing health or functioning can have reflective and/or formative measurement models. Although a construct's measurement model has extensive implications on the construction, validation, and use of a measurement instrument, measurement models are frequently wrongly or not explicitly specified. ...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2018.07.007
更新日期：2018-11-01 00:00:00
abstract：OBJECTIVE:Graphical methods for generating explanatory hypotheses from limited categorical data are described and illustrated. STUDY DESIGN AND SETTING:Univariate, bivariate, multivariate, and multiplicative graphical methods were applied to clinical data regarding very ill older persons. The data to which these metho...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2011.06.007
更新日期：2012-02-01 00:00:00
abstract：OBJECTIVES:To illustrate how multiple hypotheses testing can produce associations with no clinical plausibility. STUDY DESIGN AND SETTING:We conducted a study of all 10,674,945 residents of Ontario aged between 18 and 100 years in 2000. Residents were randomly assigned to equally sized derivation and validation cohort...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2006.01.012
更新日期：2006-09-01 00:00:00
abstract：OBJECTIVE:To explore implications of using systematic drug class reviews to develop U.S. Medicaid drug formularies. We assess racial/ethnic, gender, and socioeconomic status (SES) concordance between Medicaid populations and studies synthesized in Drug Effectiveness Review Project (DERP) systematic reviews. STUDY DESI...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,评审
doi：10.1016/j.jclinepi.2009.01.009
更新日期：2009-12-01 00:00:00
abstract：OBJECTIVE:To systematically review methodological articles which focus on nonpublication of studies and to describe methods of detecting and/or quantifying and/or adjusting for dissemination in meta-analyses. To evaluate whether the methods have been applied to an empirical data set for which one can be reasonably conf...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,评审
doi：10.1016/j.jclinepi.2016.04.015
更新日期：2016-12-01 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：OBJECTIVE:Research on emotional distress and mortality has largely focused on depression in men and in elderly populations. We examined the relation between anxiety and mortality in women at midlife, adjusting for depression. STUDY DESIGN AND SETTING:At baseline, 5,073 healthy Dutch women aged 46-54 years (mean=50.4+/...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2008.08.006
更新日期：2009-04-01 00:00:00
