Abstract：
:Time to revision is an important criterion describing the quality of implants in total joint surgery. Estimates of failure probabilities are required to inform a patient about the risk of suffering a reoperation. Also, regression models are used for comparing different prosthesis designs. Typically, patients dying before a revision are considered as censored for time to prosthesis failure. We argue that this technique is inadequate for estimation of failure probabilities and insufficient for comparison of different designs. We propose a new approach based on a competing risk model to account for concurrent mortality. We describe differences in the estimation of failure probabilities and in the interpretation of regression models for implant failure. Additionally, we introduce a random effects term in the regression model to account for potential dependencies in the failure times of bilaterally treated patients. The new approach is illustrated with fictitious data and data from an observational study conducted at a specialized hospital in Switzerland.
journal_name
J Clin Epidemioljournal_title
Journal of clinical epidemiologyauthors
Schwarzer G,Schumacher M,Maurer TB,Ochsner PEdoi
10.1016/s0895-4356(01)00371-7subject
Has Abstractpub_date
2001-10-01 00:00:00pages
997-1003issue
10eissn
0895-4356issn
1878-5921pii
S0895-4356(01)00371-7journal_volume
54pub_type
杂志文章abstract：OBJECTIVE:The area under the receiver operating characteristic (ROC) curve has been frequently used to assess the ability of diagnostic tests to discriminate between individuals with and without a disease. In this paper, we propose to use the ROC area to evaluate the discriminating power of ordinal measures, such as ma...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2007.11.016
更新日期：2008-10-01 00:00:00
abstract：:The application of rigorous epidemiologic methods to clinical questions has broadened the scope of research in epidemiology and enhanced the quality of clinical research. The International Clinical Epidemiology Network (INCLEN) has enabled physicians from developing countries to obtain training in epidemiologic method...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/0895-4356(89)90013-9
更新日期：1989-01-01 00:00:00
abstract：OBJECTIVES:The objective of the study is to estimate the proportion of statistically significant survival improvements reported in randomized trials of cancer treatments that are also compatible with a clinically negligible benefit. STUDY DESIGN AND SETTING:This is a cross-sectional study of reports of randomized clin...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2020.06.026
更新日期：2020-11-01 00:00:00
abstract：:Antiretroviral therapy (ART) use was examined in a cohort of homosexual men infected with HIV-1 for long periods. Multivariate logistic regression models, stratified by clinical indication (below and above 500 CD4 cells/microl or prior AIDS), were used to determine predictors of ART naivete. Of the 673 men seen at vis...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/s0895-4356(00)00274-2
更新日期：2001-02-01 00:00:00
abstract：BACKGROUND:The probability of a disease, given the result of two diagnostic tests, can be calculated by multiplying the odds of disease after the first test by the likelihood ratio of the second test. OBJECTIVE:To illustrate the error that occurs when calculating disease probability by combining the results of tests t...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2009.04.010
更新日期：2009-12-01 00:00:00
abstract：OBJECTIVES:Intervention Modeling Experiments (IMEs) are a way of developing and testing behavior change interventions before a trial. We aimed to test this methodology in a Web-based IME that replicated the trial component of an earlier, paper-based IME. STUDY DESIGN AND SETTING:Three-arm, Web-based randomized evaluat...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.jclinepi.2016.07.008
更新日期：2016-12-01 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：OBJECTIVE:To assess the consistency of an index of the scientific quality of research overviews. DESIGN:Agreement was measured among nine judges, each of whom assessed the scientific quality of 36 published review articles. ITEM SELECTION: An iterative process was used to select ten criteria relative to five key tasks...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,meta分析
doi：10.1016/0895-4356(91)90205-n
更新日期：1991-01-01 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：OBJECTIVES:Case-mix adjustment is difficult for stroke outcome studies using administrative data. However, relevant prescription, laboratory, procedure, and service claims might be surrogates for stroke severity. This study proposes a method for developing a stroke severity index (SSI) by using administrative data. ST...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2015.01.009
更新日期：2015-11-01 00:00:00
abstract：:A small variability of exposure in a population, for example small variance in nutrient intake, limits the power of an epidemiologic study. McKeown-Eyssen and Thomas (J Chron Dis 1985; 38:559-568) have shown that by selecting a population with larger exposure variance vs one with smaller variance, the study sample siz...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,评审
doi：10.1016/0895-4356(94)90190-2
更新日期：1994-08-01 00:00:00
abstract：OBJECTIVE:The objectives of this study were to evaluate the current state of reporting and handling of effect modification in network meta-analyses (NMAs) and perform exploratory analyses to identify variables that are potentially associated with incomplete reporting of effect modifiers in NMAs. STUDY DESIGN AND SETTI...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,meta分析
doi：10.1016/j.jclinepi.2017.06.004
更新日期：2017-08-01 00:00:00
abstract：BACKGROUND AND OBJECTIVE:To test unidimensionality and local independence of a set of shoulder functional status (SFS) items, develop a computerized adaptive test (CAT) of the items using a rating scale item response theory model (RSM), and compare discriminant validity of measures generated using all items (theta(IRT)...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2005.08.006
更新日期：2006-03-01 00:00:00
abstract：:The objective of this study was to construct a prediction model for predicting stroke in an elderly U.S. population, and to assess the accuracy in this population of other previously published prediction models. The subjects were participants in the Cardiovascular Health Study: 2,495 men and 3,393 women age 65 years a...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/s0895-4356(01)00434-6
更新日期：2002-02-01 00:00:00
abstract：BACKGROUND:Once a proposed topic has been identified for a systematic review and has undergone a question formulation stage, a protocol must be developed that specifies the scope and research questions in detail and outlines the methodology for conducting the systematic review. RATIONALE:Framework modifications are of...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2017.06.013
更新日期：2017-10-01 00:00:00
abstract：:Moderate consumers of alcohol have lower mortality than either nondrinkers or heavy drinkers. This systematic review aimed to quantify the level of alcohol consumption (termed the nadir) at which the lowest mortality occurs. Twenty cohort studies reported analyses of all-cause mortality for at least three categories o...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,meta分析
doi：10.1016/s0895-4356(99)00076-1
更新日期：1999-10-01 00:00:00
abstract：OBJECTIVES:This study compares three major elements of evidence-based medicine (EBM) practices, namely evidence synthesis, clinical practice guidelines (CPGs), and real-world prescriptions in the United States, regarding antidepressant treatments of major depression over the past 3 decades. STUDY DESIGN AND SETTING:We...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2020.12.023
更新日期：2021-01-06 00:00:00
abstract：:Assessment of changes in endemic infections in health care facilities are often based on comparison of infection rates over time. This study compared two methods for calculating and depicting infection data at a hospital-based nursing home care unit. Prospective incidence surveillance of nursing home acquired infectio...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/0895-4356(88)90162-x
更新日期：1988-01-01 00:00:00
abstract：:For deaths during the first 13 years of follow-up of the Minnesota Colon Cancer Control Study, an expert committee using numerous medical documents, and a nosologist using only the death certificate independently determined whether colorectal cancer caused the death and, if not, whether the disease was present at deat...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/s0895-4356(99)00016-5
更新日期：1999-05-01 00:00:00
abstract：:Educational attainment has been negatively associated with the prevalence, morbidity and mortality of many diseases. With knee osteoarthritis as an example, we used NHANES I data to examine whether the cross-sectional association between formal education and disease is due to known risk factors, and also whether educa...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/0895-4356(92)90006-9
更新日期：1992-02-01 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：OBJECTIVES:To systematically evaluate the use of Framingham Risk Score (FRS) in the medical literature and specifically examine the use of FRS in different populations and settings and for different outcomes than the ones originally developed for. STUDY DESIGN AND SETTING:We identified all the citations to the article...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2013.10.021
更新日期：2014-05-01 00:00:00
abstract：OBJECTIVES:Findings from nonrandomized studies on safety or efficacy of treatment in patient subgroups may trigger postlaunch randomized clinical trials (RCTs). In the analysis of such RCTs, results from nonrandomized studies are typically ignored. This study explores the trade-off between bias and power of Bayesian RC...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2014.11.015
更新日期：2015-04-01 00:00:00
abstract：OBJECTIVE:To assess measurement equivalence of the Singaporean English and Chinese versions of the EuroQol Group's 5-domain questionnaire (EQ-5D) in cancer patients. STUDY DESIGN AND SETTING:Seven hundred and seventy-one ethnic Chinese patients in Singapore were recruited, and they answered either an English or a Chin...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2008.03.007
更新日期：2009-02-01 00:00:00
abstract：OBJECTIVES:In multisite human immunodeficiency virus (HIV) observational cohorts, clustering of observations often occurs within sites. Ignoring clustering may lead to "Simpson's paradox" (SP) where the trend observed in the aggregated data is reversed when the groups are separated. This study aimed to investigate the ...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,多中心研究
doi：10.1016/j.jclinepi.2016.01.030
更新日期：2016-08-01 00:00:00
abstract：OBJECTIVES:To evaluate whether noninferiority trials are designed to adequately preserve the historical treatment effect of their active comparators. STUDY DESIGN AND SETTING:We reviewed 162 noninferiority trials published in high-impact medical journals. We assessed whether trials were designed to ensure that interve...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,评审
doi：10.1016/j.jclinepi.2019.03.003
更新日期：2019-06-01 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：OBJECTIVE:To simulate possible changes in systematic review results if rapid review methods were used. STUDY DESIGN AND SETTING:We recalculated meta-analyses for binary primary outcomes in Cochrane systematic reviews, simulating rapid review methods. We simulated searching only PubMed, excluding older articles (5, 7, ...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,meta分析
doi：10.1016/j.jclinepi.2018.12.015
更新日期：2019-05-01 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：OBJECTIVES:The aim of the study was to assess the completeness of reporting of methods in overviews. STUDY DESIGN AND SETTING:Assessment of the adequacy of reporting of methods in a random sample of 50 overviews was based on a published framework of methods for conducting overviews. Descriptive summary statistics were...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,评审
doi：10.1016/j.jclinepi.2019.09.025
更新日期：2020-02-01 00:00:00
