Data enhancement for co-morbidity measurement among patients referred for sleep diagnostic testing: an observational study.

abstract：BACKGROUND:A strong need exists for a validated tool that clearly defines peer review report quality in biomedical research, as it will allow evaluating interventions aimed at improving the peer review process in well-performed trials. We aim to identify and describe existing tools for assessing the quality of peer rev...

journal_title：BMC medical research methodology

authors： Superchi C,González JA,Solà I,Cobo E,Hren D,Boutron I

更新日期：2019-03-06 00:00:00

abstract：BACKGROUND:Multilevel models for non-normal outcomes are widely used in medical and health sciences research. While methods for interpreting fixed effects are well-developed, methods to quantify and interpret random cluster variation and compare it with other sources of variation are less established. Random cluster va...

journal_title：BMC medical research methodology

authors： Glorioso TJ,Grunwald GK,Ho PM,Maddox TM

更新日期：2018-07-06 00:00:00

abstract：BACKGROUND:Dichotomisation of continuous outcomes has been rightly criticised by statisticians because of the loss of information incurred. However to communicate a comparison of risks, dichotomised outcomes may be necessary. Peacock et al. developed a distributional approach to the dichotomisation of normally distribu...

journal_title：BMC medical research methodology

authors： Sauzet O,Ofuya M,Peacock JL

更新日期：2015-04-24 00:00:00

abstract：BACKGROUND:The aim of this study was to examine the relationship between mortality and statin adherence using two different approaches to adherence measurement (summary versus repeated-measures). METHODS:A retrospective cohort study was conducted using administrative data from Saskatchewan, Canada between 1994 and 200...

journal_title：BMC medical research methodology

authors： Alsabbagh MW,Eurich D,Lix LM,Wilson TW,Blackburn DF

更新日期：2017-04-20 00:00:00

abstract：BACKGROUND:Diagnostic tests are performed in a subset of the population who are at higher risk, resulting in undiagnosed cases among those who do not receive the test. This poses a challenge for estimating the prevalence of the disease in the study population, and also for studying the risk factors for the disease. ME...

journal_title：BMC medical research methodology

authors： Zhang N,Cheng S,Ambroggio L,Florin TA,Macaluso M

更新日期：2017-12-12 00:00:00

abstract：BACKGROUND:Motivational Interviewing (MI), Brief Advice (BA) and Health Education (HE) are established smoking cessation induction methods for smokers with low desire to quit. Although randomized controlled trials (RCT's) have been frequently used to assess these interventions the temporal efficacy and effectiveness of...

journal_title：BMC medical research methodology

authors： Bani-Yaghoub M,Elhomani A,Catley D

更新日期：2018-06-13 00:00:00

abstract：BACKGROUND:Disease incidence and prevalence are both core indicators of population health. Incidence is generally not as readily accessible as prevalence. Cohort studies and electronic health record systems are two major way to estimate disease incidence. The former is time-consuming and expensive; the latter is not av...

journal_title：BMC medical research methodology

authors： Hu XF,Young K,Chan HM

更新日期：2017-01-23 00:00:00

abstract：BACKGROUND:Retaining participants in cohort studies with multiple follow-up waves is difficult. Commonly, researchers are faced with the problem of missing data, which may introduce biased results as well as a loss of statistical power and precision. The STROBE guidelines von Elm et al. (Lancet, 370:1453-1457, 2007); V...

journal_title：BMC medical research methodology

authors： Karahalios A,Baglietto L,Carlin JB,English DR,Simpson JA

更新日期：2012-07-11 00:00:00

abstract：BACKGROUND:Aboriginal and Torres Strait Islander peoples are under-reported in administrative health datasets in NSW, Australia. Correct reporting of Aboriginal and Torres Strait Islander peoples is essential to measure the effectiveness of policies and programmes aimed at reducing the health disadvantage experienced b...

journal_title：BMC medical research methodology

authors： Taylor LK,Bentley J,Hunt J,Madden R,McKeown S,Brandt P,Baker D

更新日期：2012-07-02 00:00:00

abstract：BACKGROUND:The BSI-18 contains the three six-item scales somatization, depression, and anxiety as well as the Global Severity Index (GSI), including all 18 items. The BSI-18 is the latest and shortest of the multidimensional versions of the Symptom-Checklist 90-R, but its psychometric properties have not been sufficien...

journal_title：BMC medical research methodology

authors： Franke GH,Jaeger S,Glaesmer H,Barkmann C,Petrowski K,Braehler E

更新日期：2017-01-26 00:00:00

abstract：BACKGROUND:Diet plays an important role in chronic disease, and the use of dietary pattern analysis has grown rapidly as a way of deconstructing the complexity of nutritional intake and its relation to health. Pattern analysis methods, such as principal component analysis (PCA), have been used to investigate various di...

journal_title：BMC medical research methodology

authors： Zhang F,Tapera TM,Gou J

更新日期：2018-10-29 00:00:00

abstract：BACKGROUND:The initial vanguard cohort of the U.S. National Children's Study was a pregnancy and birth cohort study that sought to enroll some women prior to pregnancy, and to assess exposures early in pregnancy. METHODS:During the recruitment phase (2009-2010), geographically based sampling was used to recruit women ...

journal_title：BMC medical research methodology

authors： Stanford JB,Brenner R,Fetterer D,Palmer L,Schoendorf KC,U.S. National Children’s Study.

更新日期：2015-09-24 00:00:00

abstract：BACKGROUND:To describe how frequently harm is reported in the abstract of high impact factor medical journals. METHODS: DESIGN AND POPULATION:We carried out a blinded structured review of a random sample of 363 Randomised Controlled Trials (RCTs) carried out on human beings, and published in high impact factor medica...

journal_title：BMC medical research methodology

authors： Bernal-Delgado E,Fisher ES

更新日期：2008-03-27 00:00:00

abstract：BACKGROUND:The development of risk prediction models is of increasing importance in medical research - their use in practice, however, is rare. Among other reasons this might be due to the fact that thorough validation is often lacking. This study focuses on two Bayesian approaches of how to validate a prediction rule ...

journal_title：BMC medical research methodology

authors： Held U,Bové DS,Steurer J,Held L

更新日期：2012-07-20 00:00:00

abstract：BACKGROUND:Statistical time series derived from administrative data sets form key indicators in measuring progress in addressing disadvantage in Aboriginal and Torres Strait Islander populations in Australia. However, inconsistencies in the reporting of Indigenous status can cause difficulties in producing reliable ind...

journal_title：BMC medical research methodology

authors： Lawrence D,Christensen D,Mitrou F,Draper G,Davis G,McKeown S,McAullay D,Pearson G,Zubrick SR

更新日期：2012-07-02 00:00:00

abstract：BACKGROUND:Health researchers undertake studies which combine qualitative and quantitative methods. Little attention has been paid to the structural issues affecting this mixed methods approach. We explored the facilitators and barriers to undertaking mixed methods studies in health research. METHODS:Face-to-face semi...

journal_title：BMC medical research methodology

authors： O'Cathain A,Nicholl J,Murphy E

更新日期：2009-12-09 00:00:00

abstract：BACKGROUND:Greater transparency and, in particular, sharing of patient-level data for further scientific research is an increasingly important topic for the pharmaceutical industry and other organisations who sponsor and conduct clinical trials as well as generally in the interests of patients participating in studies....

journal_title：BMC medical research methodology

authors： Tucker K,Branson J,Dilleen M,Hollis S,Loughlin P,Nixon MJ,Williams Z

更新日期：2016-07-08 00:00:00

abstract：BACKGROUND:Primary care databases are a major source of data for epidemiological and health services research. However, most studies are based on coded information, ignoring information stored in free text. Using the early presentation of rheumatoid arthritis (RA) as an exemplar, our objective was to estimate the exten...

journal_title：BMC medical research methodology

authors： Ford E,Nicholson A,Koeling R,Tate A,Carroll J,Axelrod L,Smith HE,Rait G,Davies KA,Petersen I,Williams T,Cassell JA

更新日期：2013-08-21 00:00:00

abstract：BACKGROUND:Identifying and assessing degree and type of frailty among older persons is a major challenge when targeting high risk populations to identify preventive interventions. The Vulnerable Elders Survey-(VES-13) is a simple instrument to identify frailty defined as risk for death, functional decline or institutio...

journal_title：BMC medical research methodology

authors： Belmin J,Khellaf L,Pariel S,Jarzebowski W,Valembois L,Zeisel J,Lafuente-Lafuente C

更新日期：2020-02-05 00:00:00

abstract：BACKGROUND:Researchers and policy makers have determined that accounting for productivity costs, or "indirect costs," may be as important as including direct medical expenditures when evaluating the societal value of health interventions. These costs are also important when estimating the global burden of disease. The ...

journal_title：BMC medical research methodology

authors： Menzin J,Marton JP,Menzin JA,Willke RJ,Woodward RM,Federico V

更新日期：2012-06-25 00:00:00

abstract：BACKGROUND:Mediation is an important issue considered in the behavioral, medical, and social sciences. It addresses situations where the effect of a predictor variable X on an outcome variable Y is explained to some extent by an intervening, mediator variable M. Methods for addressing mediation have been available for ...

journal_title：BMC medical research methodology

authors： Knafl GJ,Knafl KA,Grey M,Dixon J,Deatrick JA,Gallo AM

更新日期：2017-03-21 00:00:00

abstract：BACKGROUND:In clinical trials, study designs may focus on assessment of superiority, equivalence, or non-inferiority, of a new medicine or treatment as compared to a control. Typically, evidence in each of these paradigms is quantified with a variant of the null hypothesis significance test. A null hypothesis is assume...

journal_title：BMC medical research methodology

authors： van Ravenzwaaij D,Monden R,Tendeiro JN,Ioannidis JPA

更新日期：2019-03-29 00:00:00

abstract：BACKGROUND:Discrete Choice Experiments (DCEs) are increasingly used in studies in healthcare research but there is still little empirical evidence for the predictive value of these hypothetical situations in similar real life circumstances. The aim of this paper is to compare the stated preferences in a DCE and the acc...

journal_title：BMC medical research methodology

authors： Lambooij MS,Harmsen IA,Veldwijk J,de Melker H,Mollema L,van Weert YW,de Wit GA

更新日期：2015-03-12 00:00:00

abstract：BACKGROUND:Primary-care based randomized controlled trials (RCTs) build an important evidence base for general practice but little evidence exists about barriers to recruitment which often hamper such trials. We investigated the issues that impeded and facilitated recruitment to a clinical trial in general practice. M...

journal_title：BMC medical research methodology

authors： Foster JM,Sawyer SM,Smith L,Reddel HK,Usherwood T

更新日期：2015-03-12 00:00:00

abstract：BACKGROUND:Claims databases are generally considered inadequate for obesity research due to suboptimal capture of body mass index (BMI) measurements. This might not be true for bariatric surgery because of reimbursement requirements and changes in coding systems. We assessed the availability and validity of claims-base...

journal_title：BMC medical research methodology

authors： Li X,Lewis KH,Callaway K,Wharam JF,Toh S

更新日期：2020-09-07 00:00:00

abstract：BACKGROUND:Controlled clinical trials of health care interventions are either explanatory or pragmatic. Explanatory trials test whether an intervention is efficacious; that is, whether it can have a beneficial effect in an ideal situation. Pragmatic trials measure effectiveness; they measure the degree of beneficial ef...

journal_title：BMC medical research methodology

authors： Godwin M,Ruhland L,Casson I,MacDonald S,Delva D,Birtwhistle R,Lam M,Seguin R

更新日期：2003-12-22 00:00:00

abstract：BACKGROUND:Generic quality of life (QoL) instruments provide important measures of self-reported wellbeing that can be compared across healthy and clinical populations. The aim of this analysis is to validate the ten-item QoL instrument "QOL10", as well as to confirm the validity of the embedded "QOL5" questionnaire an...

journal_title：BMC medical research methodology

authors： Muller AE,Skurtveit S,Clausen T

更新日期：2016-05-23 00:00:00

abstract：BACKGROUND:Methods for describing one's confidence in the available evidence are useful for end-users of evidence reviews. Analysts inevitably make judgments about the quality, quantity consistency, robustness, and magnitude of effects observed in the studies identified. The subjectivity of these judgments in several a...

journal_title：BMC medical research methodology

authors： Treadwell JR,Tregear SJ,Reston JT,Turkelson CM

更新日期：2006-10-19 00:00:00

abstract：BACKGROUND:How overall physical activity relates to specific activities and how reported activity changes over time may influence interpretation of observed associations between physical activity and health. We examine the relationships between various physical activities self-reported at different times in a large coh...

journal_title：BMC medical research methodology

authors： Armstrong ME,Cairns BJ,Green J,Reeves GK,Beral V,Million Women Study Collaborators.

更新日期：2011-06-22 00:00:00

abstract：BACKGROUND:Video stimulated recall (VSR) is a method of enhancing participants' accounts of the consultation using a video recording of the event to encourage and prompt recall in a post consultation interview. VSR is used in education and education research, and to a lesser extent in medical and nursing research. Litt...

journal_title：BMC medical research methodology

authors： Paskins Z,McHugh G,Hassell AB

更新日期：2014-08-30 00:00:00