Abstract:
OBJECTIVES:To recommend methodological standards in the prevention and handling of missing data for primary patient-centered outcomes research (PCOR). STUDY DESIGN AND SETTING:We searched National Library of Medicine Bookshelf and Catalog as well as regulatory agencies' and organizations' Web sites in January 2012 for guidance documents that had formal recommendations regarding missing data. We extracted the characteristics of included guidance documents and recommendations. Using a two-round modified Delphi survey, a multidisciplinary panel proposed mandatory standards on the prevention and handling of missing data for PCOR. RESULTS:We identified 1,790 records and assessed 30 as having relevant recommendations. We proposed 10 standards as mandatory, covering three domains. First, the single best approach is to prospectively prevent missing data occurrence. Second, use of valid statistical methods that properly reflect multiple sources of uncertainty is critical when analyzing missing data. Third, transparent and thorough reporting of missing data allows readers to judge the validity of the findings. CONCLUSION:We urge researchers to adopt rigorous methodology and promote good science by applying best practices to the prevention and handling of missing data. Developing guidance on the prevention and handling of missing data for observational studies and studies that use existing records is a priority for future research.
journal_name
J Clin Epidemioljournal_title
Journal of clinical epidemiologyauthors
Li T,Hutfless S,Scharfstein DO,Daniels MJ,Hogan JW,Little RJ,Roy JA,Law AH,Dickersin Kdoi
10.1016/j.jclinepi.2013.08.013subject
Has Abstractpub_date
2014-01-01 00:00:00pages
15-32issue
1eissn
0895-4356issn
1878-5921pii
S0895-4356(13)00351-Xjournal_volume
67pub_type
杂志文章,评审abstract::The objective of this study was to assess the determinants and the effect of misclassification in a questionnaire survey of varicose veins. A random sample of 166 individuals aged 50 years in a larger prevalence study (n = 6874) was examined by a surgeon to validate the self-reporting of varicose veins. Varicose veins...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/0895-4356(95)00012-s
更新日期:1995-09-01 00:00:00
abstract:OBJECTIVE:Cochrane acute respiratory infections (ARIs) group conducts systematic reviews of the evidence for treatment and prevention of ARIs. We report the results of a prioritization project, aiming to identify highest priority systematic review topics. STUDY DESIGN/SETTING:The project consisted of two phases. Phase...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2018.05.016
更新日期:2018-10-01 00:00:00
abstract:OBJECTIVE:To evaluate the use of hematocrit as a surrogate end point for survival among end-stage renal disease (ESRD) patients treated with epoetin. STUDY DESIGN AND SETTING:Using United States Renal Data System (USRDS) data, we conducted an observational prospective study to analyze the relationships among epoetin d...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2004.05.002
更新日期:2004-10-01 00:00:00
abstract:OBJECTIVES:The objective of this study was to identify and describe critical appraisal tools designed for assessing the quality of evidence (QoE) and/or strength of recommendations (SoRs) related to health care-related tests and diagnostic strategies (HCTDSs). STUDY DESIGN AND SETTING:We conducted a systematic review ...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章,评审
doi:10.1016/j.jclinepi.2017.09.007
更新日期:2017-12-01 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:OBJECTIVES:Several methods exist to calculate sample size for the difference of proportions (risk difference). Researchers are often unaware that there are different formulae, different underlying assumptions, and what the impact of choice of formula is on the calculated sample size. The aim of this study was to discus...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2013.10.008
更新日期:2014-05-01 00:00:00
abstract::This article (Part II) and the preceding article (Part I) report the development of two clinical staging systems for HIV-infected individuals. The objective of the research reported here (Part II) was to construct a clinical staging system to predict survival in patients with AIDS. We analyzed data from VA Cooperative...
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/s0895-4356(97)00182-0
更新日期:1997-11-01 00:00:00
abstract::In this paper we propose a method and discuss the type of data required to estimate age incidence rates from population survey data. While surveys are typically designed to estimate the prevalence of a disease or medical condition, they can also be used to estimate incidence rates. A limitation of survey data, however...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/0895-4356(89)90100-5
更新日期:1989-01-01 00:00:00
abstract:OBJECTIVES:Elderly patients are inordinately affected by surgical site infections (SSIs). This study derived and internally validated a model that used routinely collected health administrative data to measure the probability of SSI in elderly patients within 30 days of surgery. STUDY DESIGN AND SETTING:All people exc...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2016.05.010
更新日期:2016-09-01 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::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::Period prevalence is frequently measured in studies based on administrative data such as that from health maintenance organizations. For example, treated prevalence and drug utilization prevalence are important measures that are typically defined in relationship to a specified time period. Often one wishes to compare ...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章,评审
doi:10.1016/0895-4356(95)00573-0
更新日期:1996-04-01 00:00:00
abstract:OBJECTIVE:Estimates of minimal clinically important improvements (MCIIs) are larger among patients with higher values at baseline, suggesting that these patients require larger changes to appreciate improvements. We examined if baseline dependency of MCIIs was associated with specific patients across three measures, or...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2013.10.025
更新日期:2014-06-01 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::This study investigates aspects of the reliability of the Maastricht criteria list for quality assessment in systematic reviews, and whether blinded reviewing is necessary to prevent review bias. We used the data set of 12 articles from a systematic review concerning the efficacy of balneotherapy in patients with arth...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/s0895-4356(97)00297-7
更新日期:1998-04-01 00:00:00
abstract:OBJECTIVE:To investigate the behavior of predictive performance measures that are commonly used in external validation of prognostic models for outcome at intensive care units (ICUs). STUDY DESIGN AND SETTING:Four prognostic models (Simplified Acute Physiology Score II, the Acute Physiology and Chronic Health Evaluati...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2006.08.011
更新日期:2007-05-01 00:00:00
abstract:OBJECTIVES:We sought to identify the proportion of systematic reviews of adverse effects which search for unpublished data and the success rates of identifying unpublished data for inclusion in a systematic review. STUDY DESIGN AND SETTING:Two reviewers independently screened all records published in 2014 in the Datab...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2016.05.003
更新日期:2016-09-01 00:00:00
abstract:OBJECTIVES:To develop the first item bank to measure stress resilience (SR) in clinical populations. STUDY DESIGN AND SETTING:Qualitative item development resulted in an initial pool of 131 items covering a broad theoretical SR concept. These items were tested in n = 521 patients at a psychosomatic outpatient clinic. ...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2018.04.004
更新日期:2018-08-01 00:00:00
abstract:OBJECTIVES:The objective of the study was to identify determinants of external validity of prognostic models. STUDY DESIGN AND SETTING:We systematically searched for studies reporting prognostic models of heart failure (HF) and examined their performance for predicting 30-day death in a cohort of consecutive 3,452 acu...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2020.01.011
更新日期:2020-05-01 00:00:00
abstract::Laparoscopic cholecystectomy was introduced to Western Australia in 1991 and has become the method of choice for this procedure, although there are concerns about complications, particularly bile duct injuries. Previous studies have investigated this problem but have not confirmed the accuracy of coded information. We...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章,多中心研究
doi:10.1016/s0895-4356(99)00043-8
更新日期:1999-09-01 00:00:00
abstract:OBJECTIVE:A new strategy to manage conflicts of interests (COIs) of a clinical guideline's panelists gives primary responsibility to a methodologist, puts equal emphasis on intellectual and financial COIs, and excludes panelists with primary conflicts from drafting or voting on recommendations. We explored the views of...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2011.12.013
更新日期:2012-07-01 00:00:00
abstract::This study assesses psychometric properties of the Modified Mini-Mental State Exam (3MS) and present population norms and demographic risk factors for low 3MS scores. The subjects were 885 persons aged 65 and older who took the 3MS as part of the Stirling County Study, a population-based longitudinal study of adult re...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/s0895-4356(03)00111-2
更新日期:2003-07-01 00:00:00
abstract::This paper reports a prospective study, carried out in elderly patients hospitalized for acute illness, designed to evaluate the effectiveness of medical treatment from the point of view of quality of life (QoL). Patient's autoperception and satisfaction with health, the most relevant subjective estimates of QoL, were...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/0895-4356(94)00237-k
更新日期:1995-08-01 00:00:00
abstract::We studied the outcome in 308 patients with acute myocardial infarction (MI) admitted to the coronary care unit of Kobe General Hospital. Short-term outcome (within 28 days after MI) and long-term outcome (more than 28 days) were examined with survival curves to find any relationship with a history of previous MI and ...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/0895-4356(92)90186-q
更新日期:1992-01-01 00:00:00
abstract:OBJECTIVES:Recent studies suggest that rating clinical marker states (CMS) does not improve the measurement properties of the standard gamble (SG) and only slightly improves those of the feeling thermometer (FT). The poor intrarater (test-retest) reliability of CMS may explain their meager performance. Further, lack of...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章,多中心研究
doi:10.1016/j.jclinepi.2007.03.010
更新日期:2007-12-01 00:00:00
abstract:OBJECTIVE:To assess the cross-cultural adaptations of the Roland-Morris Disability Questionnaire (RMDQ). STUDY DESIGN AND SETTING:English and Chinese databases were searched through December 2017. Cross-cultural adaptation and measurement properties were evaluated using the Guidelines for the Process of Cross-Cultural...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2018.03.011
更新日期:2018-07-01 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:OBJECTIVE:Clinical trials are unlikely to ever be launched for many comparative effectiveness research (CER) questions. Inferences from hypothetical randomized trials may however be emulated with marginal structural modeling (MSM) using observational data, but success in adjusting for time-dependent confounding and sel...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2013.01.016
更新日期:2013-08-01 00:00:00
abstract:OBJECTIVE:Some authors of Cochrane overviews have also (co-)authored one or more of the underlying reviews. We examined the extent of dual (co-)authorship in Cochrane overviews, how it is dealt with, and whether the issue is raised in protocols. STUDY DESIGN:The Cochrane Library was searched for overviews and protocol...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2016.04.008
更新日期:2016-09-01 00:00:00
abstract::A three-state Markov process is used to model a steady-state population. The classical P = ID equation is derived, as well as a number of identities originally reported by Miettinen (Am J Epidemiol 1976; 103: 226-235) and Freeman and Hutchison (Am J Epidemiol 1980; 112: 707-723. Ibid. 1986; 124: 134-149). Using theore...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/0895-4356(88)90009-1
更新日期:1988-01-01 00:00:00