Research Topics
| Craig R RamsaySummaryAffiliation: University of Aberdeen Country: UK Publications
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Detail Information
Publications
Interrupted time series designs in health technology assessment: lessons from two systematic reviews of behavior change strategiesCraig R Ramsay
Health Services Research Unit, University of Aberdeen, Foresterhill, UK
Int J Technol Assess Health Care 19:613-23. 2003..We critically reviewed the methodological quality of ITS designs using studies included in two systematic reviews (a review of mass media interventions and a review of guideline dissemination and implementation strategies)...
Effect of multivitamin and multimineral supplementation on cognitive function in men and women aged 65 years and over: a randomised controlled trialGeraldine McNeill
Department of Environmental and Occupational Medicine, University of Aberdeen, Foresterhill, Aberdeen, UK
Nutr J 6:10. 2007..We examined the effect of daily supplementation with 11 vitamins and 5 minerals on cognitive function in older adults to assess the possibility that this could help to prevent cognitive decline...
Analysing randomised controlled trials with missing data: choice of approach affects conclusionsShona Fielding
Division of Applied Health Sciences, University of Aberdeen, Foresterhill, Aberdeen, UK
Contemp Clin Trials 33:461-9. 2012..Finding an appropriate way to deal with missing data is of paramount importance. We show how the choice of analysis method can impact on the conclusion of the trial with regard to the quality of life outcomes...- Beliefs about surgery: Development and validation of an instrument to assess cognitive representations about surgery, in the context of a chronic illnessJillian J Francis
Health Services Research Unit, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD, UK
Psychol Health 24:1125-37. 2009.... - Using the literature to quantify the learning curve: a case studyJonathan A Cook
University of Aberdeen, Scotland
Int J Technol Assess Health Care 23:255-60. 2007..The aim of this study was to assess whether a literature review of a technology can allow a learning curve to be quantified... - The method of minimization for allocation to clinical trials. a reviewNeil W Scott
Department of Public Health, University of Aberdeen, Aberdeen, UK
Control Clin Trials 23:662-74. 2002..From the evidence presented in this review, we believe minimization to be a highly effective allocation method and recommend its wider adoption in the conduct of randomized controlled trials... - Statistical evaluation of learning curve effects in surgical trialsJonathan A Cook
Health Services Research Unit, University of Aberdeen, Foresterhill, UK
Clin Trials 1:421-7. 2004..Bayesian hierarchical models are proposed to adjust the trial results for the existence of a learning curve effect. The implications for trial evaluation and data collection are considered... - Evidence base for an intervention to maximise uptake of glaucoma testing: a theory-based cross-sectional surveyMaria Prior
Health Services Research Unit, University of Aberdeen, Aberdeen, UK
BMJ Open 2:e000710. 2012..To identify factors associated with intention to attend a hypothetical eye health test and provide an evidence base for developing an intervention to maximise attendance, for use in studies evaluating glaucoma screening programmes... - Participation in physical play and leisure: developing a theory- and evidence-based intervention for children with motor impairmentsNiina Kolehmainen
Health Services Research Unit, University of Aberdeen, Foresterhill, Aberdeen, UK
BMC Pediatr 11:100. 2011.... - Minimal access surgery compared with medical management for chronic gastro-oesophageal reflux disease: UK collaborative randomised trialAdrian M Grant
Health Services Research Unit, Health Sciences Building, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD
BMJ 337:a2664. 2008..To determine the relative benefits and risks of laparoscopic fundoplication surgery as an alternative to long term drug treatment for chronic gastro-oesophageal reflux disease (GORD)... - Using the theory of planned behaviour as a process evaluation tool in randomised trials of knowledge translation strategies: A case study from UK primary careCraig R Ramsay
Health Services Research Unit, University of Aberdeen, Foresterhill, Aberdeen, AB25 2ZD, UK
Implement Sci 5:71. 2010.... - Recruitment to publicly funded trials--are surgical trials really different?Jonathan A Cook
Health Services Research Unit, University of Aberdeen, Aberdeen, UK
Contemp Clin Trials 29:631-4. 2008..In this paper, we compare recruitment to surgical and medical trials using a cohort of publicly funded trials... - A questionnaire elicitation of surgeons' belief about learning within a surgical trialJonathan A Cook
Health Services Research Unit, University of Aberdeen, Aberdeen, United Kingdom
PLoS ONE 7:e49178. 2012..Most surgical trials report little if any information on learning. We elicited surgeons' belief regarding learning within the context of a randomised trial which assessed two surgical procedures... - Investigating the missing data mechanism in quality of life outcomes: a comparison of approachesShona Fielding
Section of Population Health, University of Aberdeen, UK
Health Qual Life Outcomes 7:57. 2009..Secondly, to investigate whether the reminder-response data can be utilised to help identify the missing data mechanism... - Effect of multivitamin and multimineral supplements on morbidity from infections in older people (MAVIS trial): pragmatic, randomised, double blind, placebo controlled trialAlison Avenell
Health Services Research Unit, School of Medicine, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD
BMJ 331:324-9. 2005..To examine whether supplementation with multivitamins and multiminerals influences self reported days of infection, use of health services, and quality of life in people aged 65 or over... - Pre-validation methods for developing a patient reported outcome instrumentMaria E Prior
Health Services Research Unit, University of Aberdeen, Aberdeen AB252ZD, UK
BMC Med Res Methodol 11:112. 2011..Such 'top down' approaches are common, but the explicit pre-validation methods are often poorly reported. This paper presents a systematic and generalisable 5-step pre-validation PRO instrument methodology... - Sample size calculator for cluster randomized trialsMarion K Campbell
Health Services Research Unit, University of Aberdeen, Polwarth Building Foresterhill, Aberdeen, Scotland AB25 2ZD UK
Comput Biol Med 34:113-25. 2004..A sample size calculator is presented for calculating appropriate sample sizes for cluster trials, whilst allowing the implications of both methods of inflation to be considered... - Assessing the learning curve effect in health technologies. Lessons from the nonclinical literatureCraig R Ramsay
University of Aberdeen
Int J Technol Assess Health Care 18:1-10. 2002..CONCLUSION: A good dividend of more sophisticated methods was obtained by searching in nonclinical fields. These methods now require formal testing on health technology data sets... - The key role of micronutrientsAlison Avenell
Clin Nutr 26:159; author reply 160. 2007 - The impact of guidelines on mild hypertension in pregnancy: time series analysisRobbie Foy
Scottish Programme for Clinical Effectiveness in Reproductive Health, Simpson Centre for Reproductive Health, University of Edinburgh
BJOG 111:765-70. 2004..The lack of the intervention effect may be related to the complexity of the guideline recommendations and the nature of the implementation strategy... - Unit of analysis errors should be clarified in meta-analysesRuth E Thomas
BMJ 326:397. 2003