Use of global assessment measures in dementia drug trials.

abstract：:We have previously shown that patients with a positive family history of lung cancer did not exhibit characteristics expected if the familial association was a surrogate for a genetic mechanism which was absent in those without such a history. In this study, we examine the incidence of cancer (all sites) in two groups...

journal_title：Journal of clinical epidemiology

authors： McDuffie HH

更新日期：1991-01-01 00:00:00

abstract：:This paper describes a multivariate analysis of a 3-year prospective study of the covariates of age at menopause among women who were randomly sampled from a general population. This approach avoids three problems that may account for the inconsistent results of prior studies: recall bias in retrospectively collected ...

journal_title：Journal of clinical epidemiology

authors： Brambilla DJ,McKinlay SM

更新日期：1989-01-01 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

authors： Peek N,Arts DG,Bosman RJ,van der Voort PH,de Keizer NF

更新日期：2007-05-01 00:00:00

abstract：BACKGROUND AND OBJECTIVES:Clinical trials increasingly use results of diagnostic tests as surrogate outcomes. Our objective was to answer the following questions: (1) is the parameter measured by the reference standard a valid surrogate? (2) How does the tests accuracy influence the estimate of the treatment benefit on...

journal_title：Journal of clinical epidemiology

authors： Kassaï B,Shah NR,Leizorovicza A,Cucherat M,Gueyffier F,Boissel JP

更新日期：2005-10-01 00:00:00

abstract：BACKGROUND AND OBJECTIVES:Meta-analyses sometimes summarize results in the presence of substantial unexplained between-study heterogeneity. As GRADE criteria highlight, unexplained heterogeneity reduces certainty in the evidence, resulting in limited confidence in average effect estimates. The aim of this paper is to p...

journal_title：Journal of clinical epidemiology

authors： Saad A,Yekutieli D,Lev-Ran S,Gross R,Guyatt G

更新日期：2019-03-01 00:00:00

abstract：OBJECTIVE:To estimate the sensitivity of International Classification of Diseases (ICD-9-CM) coding for detecting hospitalized community-acquired pneumonia and to assess possible determinants for misclassification. STUDY DESIGN AND SETTING:Based on microbiological analysis data, 293 patients with a principal diagnosis...

journal_title：Journal of clinical epidemiology

authors： van de Garde EM,Oosterheert JJ,Bonten M,Kaplan RC,Leufkens HG

更新日期：2007-08-01 00:00:00

abstract：:A standardized examination protocol was developed for the assessment of low back disorders in primary care. The protocol was found feasible in the occupational health service setting. The interexaminer repeatability between an occupational physician and an occupational physiotherapist was good for most items. The pred...

journal_title：Journal of clinical epidemiology

authors： Viikari-Juntura E,Takala EP,Riihimäki H,Malmivaara A,Martikainen R,Jäppinen P

更新日期：1998-03-01 00:00:00

abstract：OBJECTIVE:To assess agreement between parents' proxy reports of children's respiratory-related health service use and administrative data. STUDY DESIGN AND SETTING:A retrospective analysis of statistical agreement between clinical and claims data for reports of physician visits, emergency department (ED) visits, and h...

journal_title：Journal of clinical epidemiology

authors： Ungar WJ,Davidson-Grimwood SR,Cousins M

更新日期：2007-11-01 00:00:00

abstract：:Socioeconomic and demographic factors associated with type of facility (cancer center vs non-cancer center) at which a child with cancer is seen were identified to suggest interventions to increase access to state-of-the-art care. The 2268 children with cancer in Florida (1981-1986) were classified as ever having been...

journal_title：Journal of clinical epidemiology

authors： Roush SW,Krischer JP,Cox MW,Pollock BH

更新日期：1993-06-01 00:00:00

abstract：OBJECTIVES:To evaluate how the rank probabilities obtained from network meta-analysis (NMA) change with the use of increasingly stringent criteria for the relative effect comparing two treatments which ranks one treatment better than the other. STUDY DESIGN AND SETTING:Systematic survey and reanalysis of published dat...

journal_title：Journal of clinical epidemiology

authors： Brignardello-Petersen R,Johnston BC,Jadad AR,Tomlinson G

更新日期：2018-06-01 00:00:00

abstract：:Although routinely used in health surveys, the factors affecting maternal perceptions of health in children, especially those with health problems, have received little examination. This question has been addressed using a telephone interview of families of 483 children followed in one of three clinics at Children's H...

journal_title：Journal of clinical epidemiology

authors： McCormick MC,Athreya BH,Bernbaum JC,Charney EB

更新日期：1988-01-01 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

authors： Geere JH,Geere JA,Hunter PR

更新日期：2013-03-01 00:00:00

abstract：:The similarity in meaning assigned to response choice labels from the SF-36 Health Survey (SF-36) was evaluated across countries. Convenience samples of judges (range, 10 to 117; median = 48) from 13 countries rated translations of response choice labels, using a variation of the Thurstone method of equal appearing in...

journal_title：Journal of clinical epidemiology

authors： Keller SD,Ware JE Jr,Gandek B,Aaronson NK,Alonso J,Apolone G,Bjorner JB,Brazier J,Bullinger M,Fukuhara S,Kaasa S,Leplège A,Sanson-Fisher RW,Sullivan M,Wood-Dauphinee S

更新日期：1998-11-01 00:00:00

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

authors： Delcourt C,Villatte-Cathelineau B,Vauzelle-Kervroedan F,Papoz L

更新日期：1996-06-01 00:00:00

abstract：:Quality of life and functional health were measured cross-sectionally for 314 adult ambulatory primary care patients in a rural clinic and found to be much better for patients with low severity of illness who required no confinement to home because of health problems, than for patients with high severity of illness wh...

journal_title：Journal of clinical epidemiology

authors： Parkerson GR Jr,Broadhead WE,Tse CK

更新日期：1992-11-01 00:00:00

abstract：:To effectively evaluate medical literature, practicing physicians and medical researchers must understand the impact of statistical tests on research outcomes. Applying inefficient statistics not only increases the need for resources, but more importantly increases the probability of committing a Type I or Type II err...

journal_title：Journal of clinical epidemiology

authors： Bridge PD,Sawilowsky SS

更新日期：1999-03-01 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

authors： Perneger TV,Brindel P,Combescure C,Gayet-Ageron A

更新日期：2020-11-01 00:00:00

abstract：:Although case-crossover analyses have lately emerged as an alternative to case-control analyses in epidemiological studies, it is not yet known in which situations they give reliable conclusions. In this work, the case-crossover and the case-control designs were first compared on the basis of a dataset from a publishe...

journal_title：Journal of clinical epidemiology

authors： Viboud C,Boëlle PY,Kelly J,Auquier A,Schlingmann J,Roujeau JC,Flahault A

更新日期：2001-12-01 00:00:00

abstract：OBJECTIVE:Loss to follow-up threatens internal and external validity yet little research has examined ways to limit participant attrition. We conducted a systematic review of studies with a primary focus on strategies to retain participants in health care research. STUDY DESIGN AND SETTINGS:We completed searches of Pu...

journal_title：Journal of clinical epidemiology

authors： Robinson KA,Dennison CR,Wayman DM,Pronovost PJ,Needham DM

更新日期：2007-08-01 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

authors： White IR

更新日期：1999-10-01 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

authors： Iwakami N,Nagai T,Furukawa TA,Tajika A,Onishi A,Nishimura K,Ogata S,Nakai M,Takegami M,Nakano H,Kawasaki Y,Alba AC,Guyatt GH,Shiraishi Y,Kohsaka S,Kohno T,Goda A,Mizuno A,Yoshikawa T,Anzai T,investigators for the

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

authors： Maden M,McMahon N,Booth A,Dickson R,Paisley S,Gabbay M

更新日期：2018-12-01 00:00:00

abstract：:Validation of the London School of Hygiene (Rose) Questionnaire with objective measures of myocardial ischemia is incomplete. Therefore, we compared the Rose Questionnaire with exercise thallium-201 myocardial scintigraphy in 147 male and 97 female patients with chest pain referred for clinical exercise testing. Of th...

journal_title：Journal of clinical epidemiology

authors： Garber CE,Carleton RA,Heller GV

更新日期：1992-07-01 00:00:00

abstract：:This study compared the utility of different health indicators in frail older people, as a component of a larger study of medical evaluations of 183 adult day care participants in five Maryland centers. Indices examined included: number of disease categories, number of active categories, number of severe categories, n...

journal_title：Journal of clinical epidemiology

authors： Cohen-Mansfield J,Pawlson G,Lipson S,Volpato S

更新日期：2001-11-01 00:00:00

abstract：OBJECTIVES:To assess whether short message service (SMS) text messages sent as prenotification or postnotification reminders improve questionnaire response rates in randomized controlled trial (RCT) follow-up. STUDY DESIGN AND SETTING:Three "trials within a trial" assessed text message notifications sent before or aft...

journal_title：Journal of clinical epidemiology

authors： Keding A,Brabyn S,MacPherson H,Richmond SJ,Torgerson DJ

更新日期：2016-11-01 00:00:00

abstract：OBJECTIVE:Secondary databases are used in descriptive studies of patient subgroups; evaluation of associations between individual characteristics and diagnosis, prognosis, and/or service utilization rates; and studies of the quality of health care delivered. This article identifies sources of bias for health state char...

journal_title：Journal of clinical epidemiology

authors： Terris DD,Litaker DG,Koroukian SM

更新日期：2007-07-01 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

authors： Stewart W,Brookmyer R,Van Natta M

更新日期：1989-01-01 00:00:00

abstract：:Toxic Oil Syndrome (TOS) is a previously unreported condition which affected more than 20,000 people in Spain in 1981 and whose natural history is unknown. In 1993-94, a stratified random sample of 1400 survivors was drawn to measure their health status through clinical examination and their self-perception of well-be...

journal_title：Journal of clinical epidemiology

authors： Gómez de la Cámara A,Posada de la Paz M,Abaitua Borda I,Barainca Oyagüe MT,Abraira Santos V,Ruiz-Navarro MD,Terracini B

更新日期：1998-10-01 00:00:00

abstract：OBJECTIVES:Model specification-what adjusting variables are analytically modeled-may influence results of observational associations. We present a standardized approach to quantify the variability of results obtained with choices of adjustments called the "vibration of effects" (VoE). STUDY DESIGN AND SETTING:We estim...

journal_title：Journal of clinical epidemiology

authors： Patel CJ,Burford B,Ioannidis JP

更新日期：2015-09-01 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

authors： Waxman R,Woodburn H,Powell M,Woodburn J,Blackburn S,Helliwell P

更新日期：2003-11-01 00:00:00