Craig R Ramsay

Summary

Affiliation: University of Aberdeen
Country: UK

Publications

  1. ncbi request reprint Interrupted time series designs in health technology assessment: lessons from two systematic reviews of behavior change strategies
    Craig R Ramsay
    Health Services Research Unit, University of Aberdeen, Foresterhill, UK
    Int J Technol Assess Health Care 19:613-23. 2003
  2. pmc Effect of multivitamin and multimineral supplementation on cognitive function in men and women aged 65 years and over: a randomised controlled trial
    Geraldine McNeill
    Department of Environmental and Occupational Medicine, University of Aberdeen, Foresterhill, Aberdeen, UK
    Nutr J 6:10. 2007
  3. ncbi request reprint Theoretical and empirical dimensions of the Aberdeen Glaucoma Questionnaire: a cross sectional survey and principal component analysis
    Maria Prior
    Health Services Research Unit, University of Aberdeen, Aberdeen, UK
    BMC Ophthalmol 13:72. 2013
  4. doi request reprint Analysing randomised controlled trials with missing data: choice of approach affects conclusions
    Shona Fielding
    Division of Applied Health Sciences, University of Aberdeen, Foresterhill, Aberdeen, UK
    Contemp Clin Trials 33:461-9. 2012
  5. doi request reprint Beliefs about surgery: Development and validation of an instrument to assess cognitive representations about surgery, in the context of a chronic illness
    Jillian J Francis
    Health Services Research Unit, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD, UK
    Psychol Health 24:1125-37. 2009
  6. ncbi request reprint The method of minimization for allocation to clinical trials. a review
    Neil W Scott
    Department of Public Health, University of Aberdeen, Aberdeen, UK
    Control Clin Trials 23:662-74. 2002
  7. ncbi request reprint Using the literature to quantify the learning curve: a case study
    Jonathan A Cook
    University of Aberdeen, Scotland
    Int J Technol Assess Health Care 23:255-60. 2007
  8. ncbi request reprint Statistical evaluation of learning curve effects in surgical trials
    Jonathan A Cook
    Health Services Research Unit, University of Aberdeen, Foresterhill, UK
    Clin Trials 1:421-7. 2004
  9. ncbi request reprint Assessing methods to specify the target difference for a randomised controlled trial: DELTA (Difference ELicitation in TriAls) review
    Jonathan A Cook
    Health Services Research Unit, University of Aberdeen, Aberdeen, UK
    Health Technol Assess 18:v-vi, 1-175. 2014
  10. ncbi request reprint Variation of clinical outcomes used in glaucoma randomised controlled trials: a systematic review
    Rehab Ismail
    Health Services Research Unit, University of Aberdeen, Aberdeen, UK
    Br J Ophthalmol 98:464-8. 2014

Collaborators

Detail Information

Publications26

  1. ncbi request reprint Interrupted time series designs in health technology assessment: lessons from two systematic reviews of behavior change strategies
    Craig 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)...
  2. pmc Effect of multivitamin and multimineral supplementation on cognitive function in men and women aged 65 years and over: a randomised controlled trial
    Geraldine 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...
  3. ncbi request reprint Theoretical and empirical dimensions of the Aberdeen Glaucoma Questionnaire: a cross sectional survey and principal component analysis
    Maria Prior
    Health Services Research Unit, University of Aberdeen, Aberdeen, UK
    BMC Ophthalmol 13:72. 2013
    ....
  4. doi request reprint Analysing randomised controlled trials with missing data: choice of approach affects conclusions
    Shona 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...
  5. doi request reprint Beliefs about surgery: Development and validation of an instrument to assess cognitive representations about surgery, in the context of a chronic illness
    Jillian J Francis
    Health Services Research Unit, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD, UK
    Psychol Health 24:1125-37. 2009
    ....
  6. ncbi request reprint The method of minimization for allocation to clinical trials. a review
    Neil 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...
  7. ncbi request reprint Using the literature to quantify the learning curve: a case study
    Jonathan 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...
  8. ncbi request reprint Statistical evaluation of learning curve effects in surgical trials
    Jonathan 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...
  9. ncbi request reprint Assessing methods to specify the target difference for a randomised controlled trial: DELTA (Difference ELicitation in TriAls) review
    Jonathan A Cook
    Health Services Research Unit, University of Aberdeen, Aberdeen, UK
    Health Technol Assess 18:v-vi, 1-175. 2014
    ..Determination of the target difference, as opposed to statistical approaches to calculating the sample size, has been greatly neglected though a variety of approaches have been proposed the current state of the evidence is unclear...
  10. ncbi request reprint Variation of clinical outcomes used in glaucoma randomised controlled trials: a systematic review
    Rehab Ismail
    Health Services Research Unit, University of Aberdeen, Aberdeen, UK
    Br J Ophthalmol 98:464-8. 2014
    ..The purpose of this review is to identify different clinical outcomes reported in glaucoma trials...
  11. pmc A questionnaire elicitation of surgeons' belief about learning within a surgical trial
    Jonathan 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...
  12. pmc Evidence base for an intervention to maximise uptake of glaucoma testing: a theory-based cross-sectional survey
    Maria 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...
  13. pmc Participation in physical play and leisure: developing a theory- and evidence-based intervention for children with motor impairments
    Niina Kolehmainen
    Health Services Research Unit, University of Aberdeen, Foresterhill, Aberdeen, UK
    BMC Pediatr 11:100. 2011
    ....
  14. pmc 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...
  15. pmc Minimal access surgery compared with medical management for chronic gastro-oesophageal reflux disease: UK collaborative randomised trial
    Adrian 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)...
  16. pmc Using the theory of planned behaviour as a process evaluation tool in randomised trials of knowledge translation strategies: A case study from UK primary care
    Craig R Ramsay
    Health Services Research Unit, University of Aberdeen, Foresterhill, Aberdeen, AB25 2ZD, UK
    Implement Sci 5:71. 2010
    ....
  17. ncbi request reprint Evaluating an audit and feedback intervention for reducing antibiotic prescribing behaviour in general dental practice (the RAPiD trial): a partial factorial cluster randomised trial protocol
    Maria Prior
    Health Services Research Unit, University of Aberdeen, Health Sciences Building, Foresterhill, Aberdeen, UK
    Implement Sci 9:50. 2014
    ..However, wide variation in prescribing persists and the overall use of antibiotics is increasing...
  18. doi request reprint Determining information for inclusion in a decision-support intervention for clinical trial participation: a modified Delphi approach
    Katie Gillies
    aHealth Services Research Unit, University of Aberdeen, Aberdeen, UK
    Clin Trials 10:967-76. 2013
    ..There is a lack of evidence about what information is deemed important to support decisions about informed consent for clinical trials, and whether different groups agree on the information for inclusion...
  19. pmc Pre-validation methods for developing a patient reported outcome instrument
    Maria 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...
  20. pmc Investigating the missing data mechanism in quality of life outcomes: a comparison of approaches
    Shona 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...
  21. pmc Effect of multivitamin and multimineral supplements on morbidity from infections in older people (MAVIS trial): pragmatic, randomised, double blind, placebo controlled trial
    Alison 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...
  22. ncbi request reprint Sample size calculator for cluster randomized trials
    Marion 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...
  23. ncbi request reprint Assessing the learning curve effect in health technologies. Lessons from the nonclinical literature
    Craig R Ramsay
    University of Aberdeen
    Int J Technol Assess Health Care 18:1-10. 2002
    ..It has been shown that the statistical methods used are relatively crude. Methods to describe learning curves in fields outside medicine, for example, psychology and engineering, may be better...
  24. ncbi request reprint The key role of micronutrients
    Alison Avenell
    Clin Nutr 26:159; author reply 160. 2007
  25. ncbi request reprint The impact of guidelines on mild hypertension in pregnancy: time series analysis
    Robbie Foy
    Scottish Programme for Clinical Effectiveness in Reproductive Health, Simpson Centre for Reproductive Health, University of Edinburgh
    BJOG 111:765-70. 2004
    ..To determine the impact of a national strategy to promote implementation of a guideline on the management of mild, non-proteinuric hypertension in pregnancy...
  26. pmc Unit of analysis errors should be clarified in meta-analyses
    Ruth E Thomas
    BMJ 326:397. 2003