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

authors： Jeffery RA,Navarro T,Wilczynski NL,Iserman EC,Keepanasseril A,Sivaramalingam B,Agoritsas T,Haynes RB

更新日期：2014-10-01 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

authors： Glickman ME,Rao SR,Schultz MR

更新日期：2014-08-01 00:00:00

abstract：INTRODUCTION:Weight loss interventions often present small mean weight changes over time, despite the fact that a substantial proportion of the participants lost more weight. This effect is often leveled out by the substantial proportion of participants who gained weight during the trial. The aim of this study is to id...

journal_title：Journal of clinical epidemiology

authors： de Vos BC,Runhaar J,Verkleij SP,van Middelkoop M,Bierma-Zeinstra SM

更新日期：2014-08-01 00:00:00

abstract：OBJECTIVES:To ascertain the smallest amounts of change for the three Manchester-Oxford Foot Questionnaire (MOXFQ) domains that are likely to be clinically meaningful and beyond measurement error for conditions affecting the foot/ankle. Estimates were compared with those from the Short-Form 36 (SF-36). STUDY DESIGN AND...

journal_title：Journal of clinical epidemiology

authors： Dawson J,Boller I,Doll H,Lavis G,Sharp R,Cooke P,Jenkinson C

更新日期：2014-06-01 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

authors： Ward MM,Guthrie LC,Alba M

更新日期：2014-06-01 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

authors： Bell ML,Teixeira-Pinto A,McKenzie JE,Olivier J

更新日期：2014-05-01 00:00:00

abstract：OBJECTIVES:Understanding patterns of maternity care requires knowing which women have given birth previously, but this information is typically unavailable in administrative hospital data sets. We assessed how well parity can be derived using linked historical records. STUDY DESIGN AND SETTING:Using Hospital Episode S...

journal_title：Journal of clinical epidemiology

authors： Cromwell DA,Knight HE,Gurol-Urganci I

更新日期：2014-05-01 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

authors： Tzoulaki I,Seretis A,Ntzani EE,Ioannidis JP

更新日期：2014-05-01 00:00:00

abstract：OBJECTIVES:Many diagnostic studies are aimed at defining "optimal" thresholds. Here, we evaluate the performance of empirically defined optimal thresholds (1) in the sample in which they were defined and (2) in the population from which the sample was drawn. STUDY DESIGN AND SETTING:We simulated test results for 120,0...

journal_title：Journal of clinical epidemiology

authors： Hirschfeld G,do Brasil PE

更新日期：2014-04-01 00:00:00

abstract：OBJECTIVES:To evaluate the responsiveness of generic and mapped preference-based measures based on the anchor of global change in health condition of colorectal cancer (CRC) patients. STUDY DESIGN AND SETTING:A baseline sample of 333 Chinese CRC patients was recruited between September 2009 and July 2010 and was surve...

journal_title：Journal of clinical epidemiology

authors： Wong CK,Mulhern B,Wan YF,Lam CL

更新日期：2014-02-01 00:00:00

abstract：OBJECTIVES:Disinvestment is critical for ensuring the long-term sustainability of health-care services. Key barriers to disinvestment are heterogeneity between research and clinical settings, absence of evidence of effectiveness of some health technologies, and exposure of patients and organizations to risks and poor o...

journal_title：Journal of clinical epidemiology

authors： Haines T,O'Brien L,McDermott F,Markham D,Mitchell D,Watterson D,Skinner E

更新日期：2014-02-01 00:00:00

abstract：OBJECTIVES:The classical diagnostic cross-sectional study has a focus on one disease only. Generalist clinicians, however, are confronted with a wide range of diagnoses. We propose the "comprehensive diagnostic study design" to evaluate diagnostic tests regarding more than one disease outcome. STUDY DESIGN AND SETTING...

journal_title：Journal of clinical epidemiology

authors： Donner-Banzhoff N,Haasenritter J,Hüllermeier E,Viniol A,Bösner S,Becker A

更新日期：2014-02-01 00:00:00

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

authors： Lee AW

更新日期：2014-02-01 00:00:00

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...

journal_title：Journal of clinical epidemiology

authors： Li T,Hutfless S,Scharfstein DO,Daniels MJ,Hogan JW,Little RJ,Roy JA,Law AH,Dickersin K

更新日期：2014-01-01 00:00:00

abstract：OBJECTIVES:Calibration is often thought to assess the bias of a clinical prediction rule. In particular, if the rule is based on a linear logistic model, it is often assumed that an overestimation of all coefficients results in a calibration slope less than 1 and an underestimation in a slope larger than 1. STUDY DESI...

journal_title：Journal of clinical epidemiology

authors： Vach W

更新日期：2013-11-01 00:00:00

abstract：OBJECTIVES:To assess whether the reported trial characteristics are associated with treatment effects on all-cause mortality within critical care medicine. STUDY DESIGN AND SETTING:We identified all eligible randomized controlled trials (RCTs) from Cochrane Reviews on patients with sepsis, septic shock, and cardiogeni...

journal_title：Journal of clinical epidemiology

authors： Unverzagt S,Prondzinsky R,Peinemann F

更新日期：2013-11-01 00:00:00

abstract：OBJECTIVES:A key systematic review (SR) methodology is comprehensive searching. The Drug Effectiveness Review Project (DERP) SRs search US Food and Drug Administration (FDA) documents to identify unpublished evidence. This study evaluates the success of those efforts. STUDY DESIGN AND SETTING:We examined DERP reports ...

journal_title：Journal of clinical epidemiology

authors： McDonagh MS,Peterson K,Balshem H,Helfand M

更新日期：2013-10-01 00:00:00

abstract：OBJECTIVE:To develop a conceptual model to describe the burden of osteoarthritis in individuals with this condition and on the broader community. STUDY DESIGN AND SETTING:Six concept mapping workshops were undertaken: three with patients (n = 26) and three with health professionals (n = 27) in Australia and Sweden. Th...

journal_title：Journal of clinical epidemiology

authors： Busija L,Buchbinder R,Osborne RH

更新日期：2013-09-01 00:00:00

abstract：OBJECTIVES:A large body of comparative effectiveness research (CER) focuses on the use of observational and quasi-experimental approaches. We sought to examine the use of clinical trials as a tool for CER, particularly in mental health. STUDY DESIGN AND SETTING:Examination of three ongoing randomized clinical trials i...

journal_title：Journal of clinical epidemiology

authors： Blanco C,Rafful C,Olfson M

更新日期：2013-08-01 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

authors： Neugebauer R,Fireman B,Roy JA,Raebel MA,Nichols GA,O'Connor PJ

更新日期：2013-08-01 00:00:00

abstract：OBJECTIVES:To analyze whether differences between the interval from suspicion or clinical diagnosis to treatment onset (IClinDT) and the interval from certainty diagnosis to treatment onset (ICertDT) varied by tumor site, stage, and mode of hospital admission. STUDY DESIGN AND SETTING:From our hospital cancer registry...

journal_title：Journal of clinical epidemiology

authors： Macià F,Pumarega J,Gallén M,Porta M

更新日期：2013-08-01 00:00:00

abstract：OBJECTIVES:To propose a multidimensional item response theory (MIRT) scoring system for the Short Form 12 (SF-12) with good psychometric properties in terms of fit and reliability. STUDY DESIGN AND SETTINGS:Two models, indicating physical (PCS) and mental component summary (MCS) dimensions, were fitted to SF-12 data f...

journal_title：Journal of clinical epidemiology

authors： Forero CG,Vilagut G,Adroher ND,Alonso J,ESEMeD\/MHEDEA Investigators.

更新日期：2013-07-01 00:00:00

abstract：OBJECTIVE:To compare the discriminatory ability of Rasch-based and summative scoring in the context of assessing upper limb function of patients with stroke. STUDY DESIGN AND SETTING:Data were from a cohort study of 497 adults with stroke undergoing physiotherapy. Upper limb function was assessed at admission and disc...

journal_title：Journal of clinical epidemiology

authors： Khan A,Chien CW,Brauer SG

更新日期：2013-06-01 00:00:00

abstract：OBJECTIVES:If researchers want to assess reliably different aspects of general health in the migrant populations, they need translations of internationally used health assessment scales with appropriate cross-cultural adaptations and satisfactory psychometric properties. A systematic review was performed to assess the ...

journal_title：Journal of clinical epidemiology

authors： Uysal-Bozkir Ö,Parlevliet JL,de Rooij SE

更新日期：2013-06-01 00:00:00

abstract：OBJECTIVE:To assess the extent to which meta-analysis publications of drugs and biologics focus on specific named agents or even only a single agent, and identify characteristics associated with such focus. STUDY DESIGN AND SETTING:We evaluated 499 articles with meta-analyses published in 2010 and estimated how many d...

journal_title：Journal of clinical epidemiology

authors： Haidich AB,Pilalas D,Contopoulos-Ioannidis DG,Ioannidis JP

更新日期：2013-04-01 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

authors： Geere JH,Geere JA,Hunter PR

更新日期：2013-03-01 00:00:00

abstract：BACKGROUND:Chronic kidney disease (CKD) is a global health concern that is increasing mainly as the result of increasing incidences of diabetes and hypertension. Furthermore, if left untreated, individuals with CKD may progress to end-stage kidney failure. Identifying individuals with undiagnosed CKD or those who are a...

journal_title：Journal of clinical epidemiology

authors： Collins GS,Omar O,Shanyinde M,Yu LM

更新日期：2013-03-01 00:00:00

abstract：:Studies of determinants of recurrent disease often give unexpected results. In particular, well-established risk factors may seem not to have much influence on the recurrence risk. Recently, it has been argued that such paradoxical findings may be because of the bias caused by the selection of patients based on the oc...

journal_title：Journal of clinical epidemiology

authors： Smits LJ,van Kuijk SM,Leffers P,Peeters LL,Prins MH,Sep SJ

更新日期：2013-02-01 00:00:00

abstract：OBJECTIVES:In this article, we describe how to include considerations about resource utilization when making recommendations according to the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) approach. STUDY DESIGN AND SETTINGS:We focus on challenges with rating the confidence in effect estima...

journal_title：Journal of clinical epidemiology

authors： Brunetti M,Shemilt I,Pregno S,Vale L,Oxman AD,Lord J,Sisk J,Ruiz F,Hill S,Guyatt GH,Jaeschke R,Helfand M,Harbour R,Davoli M,Amato L,Liberati A,Schünemann HJ

更新日期：2013-02-01 00:00:00

abstract：OBJECTIVE:Many clinicians and decision makers want to know the combined effects of treatments that have not been evaluated in combination. It is possible to determine such treatment effects by making assumptions about the additive effects. We discuss here the prerequisites and methods of applying additivity assumptions...

journal_title：Journal of clinical epidemiology

authors： Mills EJ,Thorlund K,Ioannidis JP

更新日期：2012-12-01 00:00:00

abstract：OBJECTIVE:To develop a culturally adapted Bengali version of the Short Form-36 (SF-36) Health Survey and to test its acceptability, reliability, and validity in patients with rheumatoid arthritis (RA). STUDY DESIGN AND SETTING:The US English SF-36 was translated into Bengali after established cross-cultural adaptation...

journal_title：Journal of clinical epidemiology

authors： Feroz AH,Islam MN,ten Klooster PM,Hasan M,Rasker JJ,Haq SA

更新日期：2012-11-01 00:00:00

abstract：OBJECTIVE:Traditionally, measures have been developed using classical test theory (CTT). This study examines the psychometrics of the PedsQL 4.0 Generic Core Scales (parent report) using a modern psychometric approach (i.e., Rasch analysis) to determine if further insight regarding the behavior of the measure can be ga...

journal_title：Journal of clinical epidemiology

authors： Amin L,Rosenbaum P,Barr R,Sung L,Klaassen RJ,Dix DB,Klassen A

更新日期：2012-10-01 00:00:00

abstract：OBJECTIVE:Surrogate markers are often used in clinical trials if too much time or expense is involved to observe the effect of treatment on patient-important outcomes. We wished to estimate the ultimate effects of treatment when randomized trials have addressed only a surrogate marker, and additional, independent studi...

journal_title：Journal of clinical epidemiology

authors： Walter SD,Sun X,Heels-Ansdell D,Guyatt G

更新日期：2012-09-01 00:00:00

abstract：OBJECTIVE:In the course of performing systematic reviews on the prevalence of low back and neck pain, we required a tool to assess the risk of study bias. Our objectives were to (1) modify an existing checklist and (2) test the final tool for interrater agreement. STUDY DESIGN AND SETTING:The final tool consists of 10...

journal_title：Journal of clinical epidemiology

authors： Hoy D,Brooks P,Woolf A,Blyth F,March L,Bain C,Baker P,Smith E,Buchbinder R

更新日期：2012-09-01 00:00:00

abstract：OBJECTIVES:The uncertainty around number needed to treat (NNT) is often represented through a confidence interval (CI). However, it is not clear how the CI can help inform treatment decisions. We developed decision-theoretic measures of uncertainty for the NNT. STUDY DESIGN AND SETTING:We build our argument on the bas...

journal_title：Journal of clinical epidemiology

authors： Sadatsafavi M,Ganjizadeh S,Hatala R,Marra C,FitzGerald M

更新日期：2012-08-01 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

authors： Akl EA,Karl R,Guyatt GH

更新日期：2012-07-01 00:00:00

abstract：OBJECTIVE:To test the theory of a U-shaped association between time from the first presentation of symptoms in primary care to the diagnosis (the diagnostic interval) and mortality after diagnosis of colorectal cancer (CRC). STUDY DESIGN AND SETTING:Three population-based studies in Denmark and the United Kingdom usin...

journal_title：Journal of clinical epidemiology

authors： Tørring ML,Frydenberg M,Hamilton W,Hansen RP,Lautrup MD,Vedsted P

更新日期：2012-06-01 00:00:00

abstract：OBJECTIVE:We aimed to determine to what extent covariate adjustment could affect power in a randomized controlled trial (RCT) of a heterogeneous population with traumatic brain injury (TBI). STUDY DESIGN AND SETTING:We analyzed 14-day mortality in 9,497 participants in the Corticosteroid Randomization After Significan...

journal_title：Journal of clinical epidemiology

authors： Turner EL,Perel P,Clayton T,Edwards P,Hernández AV,Roberts I,Shakur H,Steyerberg EW,CRASH trial collaborators.

更新日期：2012-05-01 00:00:00

abstract：OBJECTIVE:To develop a tool for identifying and quantifying morbidity following cardiac surgery (cardiac postoperative morbidity score [C-POMS]). STUDY DESIGN AND SETTING:Morbidity was prospectively assessed in 450 cardiac surgery patients on postoperative days 1, 3, 5, 8, and 15 using POMS criteria (nine postoperativ...

journal_title：Journal of clinical epidemiology

authors： Sanders J,Keogh BE,Van der Meulen J,Browne JP,Treasure T,Mythen MG,Montgomery HE

更新日期：2012-04-01 00:00:00

abstract：OBJECTIVE:We review the uses of electronic health care data algorithms, measures of their accuracy, and reasons for prioritizing one measure of accuracy over another. STUDY DESIGN AND SETTING:We use real studies to illustrate the variety of uses of automated health care data in epidemiologic and health services resear...

journal_title：Journal of clinical epidemiology

authors： Chubak J,Pocobelli G,Weiss NS

更新日期：2012-03-01 00:00:00