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Exploratory factor analysis of self-reported symptoms in a large, population-based military cohort
Molly L Kelton, Cynthia A LeardMann, Besa Smith, Edward J Boyko, Tomoko I Hooper, Gary D Gackstetter, Paul D Bliese, Charles W Hoge, Tyler C Smith, the Millennium Cohort Study Team BMC Medical Research Methodology 2010, 10:94 (15 October 2010)
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Editor’s summary
Exploratory factor analysis may identify symptom patterns in military personnel but many factors load based on symptom co-location, indicating that factor analysis may have limitations when applied to surveys containing instruments grouping questions according to diagnosis.
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What differences are detected by superiority trials or ruled out by noninferiority trials? A cross-sectional study on a random sample of two-hundred two-arms parallel group randomized clinical trials
Angèle Gayet-Ageron, Thomas Agoritsas, Christophe Combescure, Krisztina Bagamery, Delphine S Courvoisier, Thomas V Perneger BMC Medical Research Methodology 2010, 10:93 (15 October 2010)
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Standard values and relationship-specific validity of the Bielefeld Relationship Expectations Questionnaire (BFPE)
Katja Petrowski, Hendrik Berth, Sören Paul, Gesine Grande, Yve Stöbel-Richter, Elmar Brähler BMC Medical Research Methodology 2010, 10:92 (13 October 2010)
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"Summary Page": a novel tool that reduces omitted data in research databases
Saveli I Goldberg, Andrzej Niemierko, Maria Shubina, Alexander Turchin BMC Medical Research Methodology 2010, 10:91 (8 October 2010)
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Evidence at a glance: error matrix approach for overviewing available evidence
Frederik Keus, Jørn Wetterslev, Christian Gluud, Cornelis JHM van Laarhoven BMC Medical Research Methodology 2010, 10:90 (1 October 2010)
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A note on Youden's J and its cost ratio
Niels Smits BMC Medical Research Methodology 2010, 10:89 (30 September 2010)
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Recruitment and retention of women in a large randomized control trial to reduce repeat preterm births: the Philadelphia Collaborative Preterm Prevention Project
David A Webb, James C Coyne, Robert L Goldenberg, Vijaya K Hogan, Irma T Elo, Joan R Bloch, Leny Mathew, Ian M Bennett, Erika F Dennis, Jennifer F Culhane BMC Medical Research Methodology 2010, 10:88 (29 September 2010)
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A survey of variable selection methods in two Chinese epidemiology journals
Huimin Liao, Henry S Lynn BMC Medical Research Methodology 2010, 10:87 (29 September 2010)
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Prediction of two month modified Rankin Scale with an ordinal prediction model in patients with aneurysmal subarachnoid haemorrhage
Roelof Risselada, Hester F Lingsma, Andrew J Molyneux, Richard SC Kerr, Julia Yarnold, Mary Sneade, Ewout W Steyerberg, Miriam CJM Sturkenboom BMC Medical Research Methodology 2010, 10:86 (29 September 2010)
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IMproving PArticipation of patients in Clinical Trials - rationale and design of IMPACT
Katrien Oude Rengerink, Brent C Opmeer, Sabine LM Logtenberg, Lotty Hooft, Kitty WM Bloemenkamp, Monique C Haak, Martijn A Oudijk, Marc E Spaanderman, Johannes J Duvekot, Christine Willekes, Maria G van Pampus, Martina M Porath, Jim van Eyck, Marko J Sikkema, Ben Mol BMC Medical Research Methodology 2010, 10:85 (27 September 2010)
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The effect of mode and context on survey results: Analysis of data from the Health Survey for England 2006 and the Boost Survey for London
Sarah Tipping, Steven Hope, Kevin Pickering, Bob Erens, Marilyn A Roth, Jennifer S Mindell BMC Medical Research Methodology 2010, 10:84 (27 September 2010)
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The effect of survey method on survey participation: Analysis of data from the Health Survey for England 2006 and the Boost Survey for London
Jennifer S Mindell, Sarah Tipping, Kevin Pickering, Steven Hope, Marilyn A Roth, Bob Erens BMC Medical Research Methodology 2010, 10:83 (27 September 2010)
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Inter-rater agreement and reliability of the COSMIN (COnsensus-based Standards for the selection of health status Measurement Instruments) Checklist
Lidwine B Mokkink, Caroline B Terwee, Elizabeth Gibbons, Paul W Stratford, Jordi Alonso, Donald L Patrick, Dirk L Knol, Lex M Bouter, Henrica CW de Vet BMC Medical Research Methodology 2010, 10:82 (22 September 2010)
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The search for stable prognostic models in multiple imputed data sets
David Vergouw, Martijn W Heymans, George M Peat, Ton Kuijpers, Peter R Croft, Henrica CW de Vet, Henriëtte E van der Horst, Daniëlle AWM van der Windt BMC Medical Research Methodology 2010, 10:81 (17 September 2010)
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Comparison of participants and non-participants to the ORISCAV-LUX population-based study on cardiovascular risk factors in Luxembourg
Ala'a Alkerwi, Nicolas Sauvageot, Sophie Couffignal, Adelin Albert, Marie-Lise Lair, Michèle Guillaume BMC Medical Research Methodology 2010, 10:80 (7 September 2010)
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Multiple imputation for estimation of an occurrence rate in cohorts with attrition and discrete follow-up time points: a simulation study
Noémie Soullier, Elise de La Rochebrochard, Jean Bouyer BMC Medical Research Methodology 2010, 10:79 (3 September 2010)
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Interpretation of evidence in data by untrained medical students: a scenario-based study
Thomas V Perneger, Delphine S Courvoisier BMC Medical Research Methodology 2010, 10:78 (26 August 2010)
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Sampling and coverage issues of telephone surveys used for collecting health information in Australia: results from a face-to-face survey from 1999 to 2008
Eleonora Grande, Anne W Taylor BMC Medical Research Methodology 2010, 10:77 (26 August 2010)
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Identifying nurse staffing research in Medline: development and testing of empirically derived search strategies with the PubMed interface
Michael Simon, Elke Hausner, Susan F Klaus, Nancy E Dunton BMC Medical Research Methodology 2010, 10:76 (23 August 2010)
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Determining the interviewer effect on CQ Index outcomes: a multilevel approach
Sjenny Winters, Mathilde H Strating, Niek S Klazinga, Rudolf B Kool, Robbert Huijsman BMC Medical Research Methodology 2010, 10:75 (19 August 2010)
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Do differences in the administrative structure of populations confound comparisons of geographic health inequalities?
Andrew L Jackson, Carolyn A Davies, Alastair H Leyland BMC Medical Research Methodology 2010, 10:74 (18 August 2010)
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Test-retest reliability of selected items of Health Behaviour in School-aged Children (HBSC) survey questionnaire in Beijing, China
Yang Liu, Mei Wang, Jorma Tynjälä, Yan Lv, Jari Villberg, Zhouyang Zhang, Lasse Kannas BMC Medical Research Methodology 2010, 10:73 (10 August 2010)
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Using Abbreviated Injury Scale (AIS) codes to classify Computed Tomography (CT) features in the Marshall System
Mehdi M Lesko, Maralyn Woodford, Laura White, Sarah J O'Brien, Charmaine Childs, Fiona E Lecky BMC Medical Research Methodology 2010, 10:72 (6 August 2010)
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The impact of attrition on the representativeness of cohort studies of older people
Samuel L Brilleman, Nancy A Pachana, Annette J Dobson BMC Medical Research Methodology 2010, 10:71 (5 August 2010)
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Automatic de-identification of textual documents in the electronic health record: a review of recent research
Stephane M Meystre, F Friedlin, Brett R South, Shuying Shen, Matthew H Samore BMC Medical Research Methodology 2010, 10:70 (2 August 2010)
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Joint modeling of multivariate longitudinal data and the dropout process in a competing risk setting: application to ICU data
Emmanuelle Deslandes, Sylvie Chevret BMC Medical Research Methodology 2010, 10:69 (29 July 2010)
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A life-course and time perspective on the construct validity of psychological distress in women and men. Measurement invariance of the K6 across gender
Aline Drapeau, Dominic Beaulieu-Prévost, Alain Marchand, Richard Boyer, Michel Préville, Sylvia Kairouz BMC Medical Research Methodology 2010, 10:68 (21 July 2010)
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Editor’s summary
The K6 psychological distress scale is gender-neutral and suggests that the higher mean level of psychological distress observed in women reflects a true difference, indicating that further research is needed to explore factors underlying these gender differences.
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What is a pilot or feasibility study? A review of current practice and editorial policy
Mubashir Arain, Michael J Campbell, Cindy L Cooper, Gillian A Lancaster BMC Medical Research Methodology 2010, 10:67 (16 July 2010)
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Measures and models for causal inference in cross-sectional studies: arguments for the appropriateness of the prevalence odds ratio and related logistic regression
Michael E Reichenheim, Evandro SF Coutinho BMC Medical Research Methodology 2010, 10:66 (15 July 2010)
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Response rates to a mailed survey of a representative sample of cancer patients randomly drawn from the Pennsylvania Cancer Registry: a randomized trial of incentive and length effects
Bridget J Kelly, Taressa K Fraze, Robert C Hornik BMC Medical Research Methodology 2010, 10:65 (14 July 2010)
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The importance of adjusting for potential confounders in Bayesian hierarchical models synthesising evidence from randomised and non-randomised studies: an application comparing treatments for abdominal aortic aneurysms
C Elizabeth McCarron, Eleanor M Pullenayegum, Lehana Thabane, Ron Goeree, Jean-Eric Tarride BMC Medical Research Methodology 2010, 10:64 (9 July 2010)
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A systematic review of models to predict recruitment to multicentre clinical trials
Katharine D Barnard, Louise Dent, Andrew Cook BMC Medical Research Methodology 2010, 10:63 (6 July 2010)
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Research methods for subgrouping low back pain
Peter Kent, Jennifer L Keating, Charlotte Leboeuf-Yde BMC Medical Research Methodology 2010, 10:62 (3 July 2010)
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Building capacity for evidence generation, synthesis and implementation to improve the care of mothers and babies in South East Asia: methods and design of the SEA-ORCHID Project using a logical framework approach
Steve McDonald, Tari Turner, Catherine Chamberlain, Pisake Lumbiganon, Jadsada Thinkhamrop, Mario R Festin, Jacqueline J Ho, Hakimi Mohammad, David J Henderson-Smart, Jacki Short, Caroline A Crowther, Ruth Martis, Sally Green, the SEA-ORCHID Study Group BMC Medical Research Methodology 2010, 10:61 (1 July 2010)
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A Spoonful of Math Helps the Medicine Go Down: An Illustration of How Healthcare can Benefit from Mathematical Modeling and Analysis
E Michael Foster, Michael R Hosking, Serhan Ziya BMC Medical Research Methodology 2010, 10:60 (23 June 2010)
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Dichotomization: 2 × 2 (×2 × 2 × 2...) categories: infinite possibilities
Karyn K Heavner, Carl V Phillips, Igor Burstyn, Warren Hare BMC Medical Research Methodology 2010, 10:59 (23 June 2010)
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Analysis of an ordinal outcome in a multicentric randomized controlled trial: application to a 3- arm anti- malarial drug trial in Cameroon
Solange Whegang, Leonardo K Basco, Henri Gwét, Jean-Christophe Thalabard BMC Medical Research Methodology 2010, 10:58 (18 June 2010)
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Development and validation of self-reported line drawings for assessment of knee malalignment and foot rotation: a cross-sectional comparative study
Sarah L Ingham, Amanda Moody, Abhishek Abhishek, Sally A Doherty, Weiya Zhang, Michael Doherty BMC Medical Research Methodology 2010, 10:57 (18 June 2010)
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Successful Reach and Adoption of a workplace health promotion RCT targeting a group of high-risk workers
Marie B Jørgensen, Charlotte DN Rasmussen, Dorte Ekner, Karen Søgaard BMC Medical Research Methodology 2010, 10:56 (14 June 2010)
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A probit- log- skew-normal mixture model for repeated measures data with excess zeros, with application to a cohort study of paediatric respiratory symptoms
Sadia Mahmud, WY Wendy Lou, Neil W Johnston BMC Medical Research Methodology 2010, 10:55 (14 June 2010)
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Network meta-analysis on the log-hazard scale, combining count and hazard ratio statistics accounting for multi-arm trials: A tutorial
Beth S Woods, Neil Hawkins, David A Scott BMC Medical Research Methodology 2010, 10:54 (10 June 2010)
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Systematic reviews, systematic error and the acquisition of clinical knowledge
Steffen Mickenautsch BMC Medical Research Methodology 2010, 10:53 (10 June 2010)
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Testing survey methodology to measure patients' experiences and views of the emergency and urgent care system: telephone versus postal survey
Alicia O'Cathain, Emma Knowles, Jon Nicholl BMC Medical Research Methodology 2010, 10:52 (9 June 2010)
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Pan-Canadian assessment of pandemic immunization data collection: study methodology
Jennifer A Pereira, Susan Quach, Christine Heidebrecht, Julie Foisy, Sherman Quan, Michael Finkelstein, Christopher A Sikora, Julie A Bettinger, David L Buckeridge, Anne McCarthy, Shelley Deeks, Jeffrey C Kwong, the Public Health Agency of Canada/Canadian Institutes of Health Research Influenza Research Network (PCIRN) Vaccine Coverage Theme Group BMC Medical Research Methodology 2010, 10:51 (8 June 2010)
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Shortening a survey and using alternative forms of prenotification: Impact on response rate and quality
Timothy J Beebe, Enrique Rey, Jeanette Y Ziegenfuss, Sarah Jenkins, Kandace Lackore, Nicholas J Talley, Richard G Locke BMC Medical Research Methodology 2010, 10:50 (8 June 2010)
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Testing for heterogeneity among the components of a binary composite outcome in a clinical trial
Janice Pogue, Lehana Thabane, PJ Devereaux, Salim Yusuf BMC Medical Research Methodology 2010, 10:49 (7 June 2010)
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A simulation study for comparing testing statistics in response-adaptive randomization
Xuemin Gu, J Jack Lee BMC Medical Research Methodology 2010, 10:48 (5 June 2010)
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Effectiveness of strategies to increase the validity of findings from association studies: size vs. replication
Rolf Weitkunat, Etienne Kaelin, Grégory Vuillaume, Gerd Kallischnigg BMC Medical Research Methodology 2010, 10:47 (28 May 2010)
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Measurement of nicotine withdrawal symptoms: linguistic validation of the Wisconsin Smoking Withdrawal Scale (WSWS) in Malay
Ahmed Awaisu, Sulastri Samsudin, Nur A Amir, Che G Omar, Mohd I Hashim, Mohamed Mohamad, Asrul A Shafie, Mohamed A Hassali BMC Medical Research Methodology 2010, 10:46 (22 May 2010)
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The 12-item World Health Organization Disability Assessment Schedule II (WHO-DAS II): a nonparametric item response analysis
Juan V Luciano, José L Ayuso-Mateos, Jaume Aguado, Ana Fernandez, Antoni Serrano-Blanco, Miquel Roca, Josep M Haro BMC Medical Research Methodology 2010, 10:45 (20 May 2010)
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