Understanding human functioning using graphical models.

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:Typically, randomization software should allow users to exert control over the different aspects of randomization including block design, provision of unique identifiers and control over the format and type of program output. While some of these characteristics have been addressed by available software, none...

journal_title：BMC medical research methodology

authors： Saghaei M

更新日期：2004-11-09 00:00:00

abstract：BACKGROUND:The likelihood ratio function (LR), the ratio of conditional probabilities of obtaining a specific marker value among those with the event of interest over those without, provides an easily interpretable way to quantify the update of the risk prediction due to the knowledge of the marker value. The LR has be...

journal_title：BMC medical research methodology

authors： Smith AM,Christodouleas JP,Hwang WT

更新日期：2019-05-22 00:00:00

abstract：BACKGROUND:In order to accurately measure and monitor levels of moderate-to-vigorous physical activity (MVPA) and sedentary behaviour (SB) in older adults, cost efficient and valid instruments are required. To date, the International Physical Activity Questionnaire (IPAQ) has not been validated with older adults (aged ...

journal_title：BMC medical research methodology

authors： Cleland C,Ferguson S,Ellis G,Hunter RF

更新日期：2018-12-22 00:00:00

abstract：BACKGROUND:The Pathobiology of Prediabetes in A Biracial Cohort study is a prospective evaluation of the transition from normal to impaired glucose regulation among African American and Caucasian adults with parental type 2 diabetes. This report describes recruitment strategies and relative yields for the 376 enrolled ...

journal_title：BMC medical research methodology

authors： Ebenibo S,Edeoga C,Ammons A,Egbuonu N,Dagogo-Jack S,Pathobiology of Prediabetes in a Biracial Cohort (POP-ABC) Research Group.

更新日期：2013-05-10 00:00:00

abstract：BACKGROUND:Clinical practice guidelines have become increasingly widely used to guide quality improvement of clinical practice. Qualitative research may be a useful way to improve the quality and implementation of guidelines. The methodology for qualitative evidence used in guidelines development is worthy of further r...

journal_title：BMC medical research methodology

authors： Wang YY,Liang DD,Lu C,Shi YX,Zhang J,Cao Y,Fang C,Huang D,Jin YH

更新日期：2020-06-17 00:00:00

abstract：BACKGROUND:The Public Population Project in Genomics (P3G) is an organisation that aims to promote collaboration between researchers in the field of population-based genomics. The main objectives of P3G are to encourage collaboration between researchers and biobankers, optimize study design, promote the harmonization o...

journal_title：BMC medical research methodology

authors： Bennett DA,Little J,Masson LF,Minelli C

更新日期：2011-10-05 00:00:00

abstract：BACKGROUND:Growth Mixture Modeling (GMM) is commonly used to group individuals on their development over time, but convergence issues and impossible values are common. This can result in unreliable model estimates. Constraining variance parameters across classes or over time can solve these issues, but can also serious...

journal_title：BMC medical research methodology

authors： Sijbrandij JJ,Hoekstra T,Almansa J,Peeters M,Bültmann U,Reijneveld SA

更新日期：2020-11-12 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: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:When discussing results medical research articles often tear substantive and statistical (methodical) contributions apart, just as if both were independent. Consequently, reasoning on bias tends to be vague, unclear and superficial. This can lead to over-generalized, too narrow and misleading conclusions, es...

journal_title：BMC medical research methodology

authors： Höfler M,Venz J,Trautmann S,Miller R

更新日期：2018-04-17 00:00:00

abstract：BACKGROUND:Nowadays, more and more clinical scales consisting in responses given by the patients to some items (Patient Reported Outcomes - PRO), are validated with models based on Item Response Theory, and more specifically, with a Rasch model. In the validation sample, presence of missing data is frequent. The aim of...

journal_title：BMC medical research methodology

authors： Hardouin JB,Conroy R,Sébille V

更新日期：2011-07-14 00:00:00

abstract：BACKGROUND:For practical reasons it is not easy to obtain fasting samples in large population health surveys. Non-fasting triglyceride (Tg) values are difficult to interpret. The authors compared the accuracy of statistically corrected non-fasting Tg values with true fasting values and estimated the misclassification o...

journal_title：BMC medical research methodology

authors： Sundvall J,Leiviskä J,Laatikainen T,Peltonen M,Salomaa V,Vanhala M,Korpi-Hyövälti E,Lauronen J,Alfthan G

更新日期：2011-05-10 00:00:00

abstract：BACKGROUND:The Template for Intervention Description and Replication (TIDieR) checklist and guide was developed by an international team of experts to promote full and accurate description of trial interventions. It is now widely used in health research. The aim of this paper is to describe the experience of using TIDi...

journal_title：BMC medical research methodology

authors： Cotterill S,Knowles S,Martindale AM,Elvey R,Howard S,Coupe N,Wilson P,Spence M

更新日期：2018-01-18 00:00:00

abstract：BACKGROUND:Precise predictions of incidence and mortality rates due to breast cancer (BC) are required for planning of public health programs as well as for clinical services. A number of approaches has been established for prediction of mortality using stochastic models. The performance of these models intensely depen...

journal_title：BMC medical research methodology

authors： Mubarik S,Hu Y,Yu C

更新日期：2020-12-09 00:00:00

abstract：BACKGROUND:We demonstrate an application of Group-Based Trajectory Modeling (GBTM) based on the beta distribution. It is offered as an alternative to the normal distribution for modeling continuous longitudinal data that are poorly fit by the normal distribution even with censoring. The primary advantage of the beta di...

journal_title：BMC medical research methodology

authors： Elmer J,Jones BL,Nagin DS

更新日期：2018-11-26 00:00:00

abstract：BACKGROUND:Navigating the world of qualitative thematic analysis can be challenging. This is compounded by the fact that detailed descriptions of methods are often omitted from qualitative discussions. While qualitative research methodologies are now mature, there often remains a lack of fine detail in their descriptio...

journal_title：BMC medical research methodology

authors： Roberts K,Dowell A,Nie JB

更新日期：2019-03-28 00:00:00

abstract：BACKGROUND:The main objective of this paper is to compare different methods for predicting the levels of SO2 air pollution in oil and gas producing area of rural western Canada. Month-long average air quality measurements were collected over a two-year period (2001-2002) at multiple locations, with some side-by-side me...

journal_title：BMC medical research methodology

authors： Burstyn I,Cherry NM,Yasui Y,Kim HM

更新日期：2008-07-04 00:00:00

abstract：BACKGROUND:Due to early colonoscopy for some participants, interval-censored observations can be introduced into the data of a colorectal polyp prevention trial. The censoring could be dependent of risk of recurrence if the reasons of having early colonoscopy are associated with recurrence. This can complicate estimati...

journal_title：BMC medical research methodology

authors： Hsu CH,Long Q,Alberts DS

更新日期：2009-09-29 00:00:00

abstract：BACKGROUND:The Patient Reported Outcomes Measurement Information System 43-item short form (PROMIS-43) and the five-level EQ-5D (EQ-5D-5L) are recently developed measures of health-related quality of life (HRQL) that have potentially broad application in evaluating treatments and capturing burden of respiratory-related...

journal_title：BMC medical research methodology

authors： Lin FJ,Pickard AS,Krishnan JA,Joo MJ,Au DH,Carson SS,Gillespie S,Henderson AG,Lindenauer PK,McBurnie MA,Mularski RA,Naureckas ET,Vollmer WM,Lee TA,CONCERT Consortium.

更新日期：2014-06-16 00:00:00

abstract：BACKGROUND:Small group research in healthcare is important because it deals with interaction and decision-making processes that can help to identify and improve safer patient treatment and care. However, the number of studies is limited due to time- and resource-intensive data processing. The aim of this study was to e...

journal_title：BMC medical research methodology

authors： Aufegger L,Bicknell C,Soane E,Ashrafian H,Darzi A

更新日期：2019-06-13 00:00:00

abstract：BACKGROUND:To assess cross-cultural validity between Dutch and English versions of the FVQ_CYP, a patient-reported outcome measure developed in the United Kingdom (UK) for children and adolescents with (severe) visual impairment or blindness (VI for brevity) to measure functional vision. METHODS:The 36-item FVQ_CYP wa...

journal_title：BMC medical research methodology

authors： Elsman EBM,Tadić V,Peeters CFW,van Rens GHMB,Rahi JS,van Nispen RMA

更新日期：2019-12-03 00:00:00

abstract：BACKGROUND:Two most important considerations in evaluation of survival prediction models are 1) predictability - ability to predict survival risks accurately and 2) reproducibility - ability to generalize to predict samples generated from different studies. We present approaches for assessment of reproducibility of sur...

journal_title：BMC medical research methodology

authors： Chen HC,Chen JJ

更新日期：2013-02-20 00:00:00

abstract：BACKGROUND:The construction of prediction intervals (PIs) for future body mass index (BMI) values of individual children based on a recent German birth cohort study with n = 2007 children is problematic for standard parametric approaches, as the BMI distribution in childhood is typically skewed depending on age. METHO...

journal_title：BMC medical research methodology

authors： Mayr A,Hothorn T,Fenske N

更新日期：2012-01-25 00:00:00

abstract：BACKGROUND:The health regulatory focus is an application of Higgins' regulatory focus theory to a health-specific context. It explains individual differences in health motivation, strategies, and behavior. Previous research found the Health Regulatory Focus Scale (HRFS) to be a reliable and valid measure for the constr...

journal_title：BMC medical research methodology

authors： Schmalbach B,Zenger M,Brähler E,Petrowski K

更新日期：2020-03-02 00:00:00

abstract：BACKGROUND:Recruiting deaf and hard-of-hearing participants, particularly sign language-users, for genetics health service research is challenging due to communication barriers, mistrust toward genetics, and researchers' unfamiliarity with deaf people. Feelings of social exclusion and lack of social cohesion between re...

journal_title：BMC medical research methodology

authors： Kobayashi Y,Boudreault P,Hill K,Sinsheimer JS,Palmer CG

更新日期：2013-11-25 00:00:00

abstract：BACKGROUND:Persistent Pseudomonas aeruginosa (PPA) infection promotes lung function deterioration in children with cystic fibrosis (CF). Although early CF diagnosis through newborn screening (NBS) has been shown to provide nutritional/growth benefit, it is unclear whether NBS lowers the risk of PPA infection and how th...

journal_title：BMC medical research methodology

authors： Wang W,Chen MH,Chiou SH,Lai HC,Wang X,Yan J,Zhang Z

更新日期：2016-09-17 00:00:00

abstract：BACKGROUND:When conducting a meta-analysis of a continuous outcome, estimated means and standard deviations from the selected studies are required in order to obtain an overall estimate of the mean effect and its confidence interval. If these quantities are not directly reported in the publications, they must be estima...

journal_title：BMC medical research methodology

authors： Kwon D,Reis IM

更新日期：2015-08-12 00:00:00

abstract：BACKGROUND:Few studies have compared methods to correct for retest effects or practice effects in settings where an acute event could influence test performance, such as major surgery. Our goal in this study was to evaluate the use of different methods to correct for the effects of practice or retest on repeated test a...

journal_title：BMC medical research methodology

authors： Racine AM,Gou Y,Fong TG,Marcantonio ER,Schmitt EM,Travison TG,Inouye SK,Jones RN

更新日期：2018-07-03 00:00:00

abstract：BACKGROUND:Route environments can positively influence people's active commuting and thereby contribute to public health. The Active Commuting Route Environment Scale (ACRES) was developed to study active commuters' perceptions of their route environments. However, bicycle commuters represent a small portion of the pop...

journal_title：BMC medical research methodology

authors： Wahlgren L,Schantz P

更新日期：2011-01-17 00:00:00