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Qualitative evidence synthesis

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Danielle Worster

on 30 October 2013

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Transcript of Qualitative evidence synthesis

22 May 2013 What is Qualitative evidence synthesis? What questions can we ask? Search strategy Which approach? Data richness Umbrella term Patient- or carer-centred questions SPIDER: Sample, Phenomenon of Interest, Design, Evaluation, Research type Will you generate, explore or test theory? (Gough et al. 2012) Qualitative evidence synthesis "A group of review types that try to synthesise and analyse findings from primary qualitative research studies" (Booth et al, 2011) Interpretive, not aggregative Cochrane-approved! Staff-centred questions Satisfaction, acceptability, etc. Explaining differential effectiveness Evaluating & designing complex interventions Filters: ISSG (UT Health), McMaster Hedges project, PubMed Health Services Research hedges, SIGN patient issues A simple strategy may be most effective Qualitativ* or interview* or perspective* or Qualitative Research/ Generate: brainstorm, suspend disbelief Explore: seeking patterns Meta-ethnography, grounded theory: "blank sheet" approaches Thematic (or narrative) synthesis Test: which data is well-supported Framework synthesis, best-fit Purpose Thematic and Framework synthesis more practical, meta-ethnography more...academic Thin data can be used in thematic synthesis but not meta-ethnography If it is rich, need less; thin, use more Thin data for describing; rich data for interpretation Got a theory? If you have a theory, framework synthesis is best A plethora of terms! Example: Garside et al. 2009 meta-ethnography meta-synthesis critical interpretive synthesis Best fit Framework analysis qualitative review of ... qualitative systematic review QES UT Health (Ovid PsycInfo) https://sph.uth.edu/charting/Ovid_PsycINFO_filters.htm
SIGN (Ovid Medline) http://www.sign.ac.uk/methodology/filters.html#patient They used the Health Belief Model as a starting point for developing codes and as a conceptual lens to assess the themes If there is no theory, then thematic synthesis No theory, no panic Carroll & Booth (2011, revisited in 2013) Best fit Question: what if the framework(s) available aren't a great fit? "a pragmatic method of qualitative evidence synthesis" Not convinced this model was identified a priori... It's a highly structured approach using an a priori framework Steps Identify a model: Huffman S. Can Marketing Of Multiple Vitamin/Mineral Supplements Reach the Poor? The Vitaldía Project, Bolivia; 2002. Adapt model to patient views of colorectal cancer chemoprophylaxis (no previous model found) Creation of a new conceptual model Lessons learned There were "helpful overlaps" The original model lacked adequate depth & complexity, relationships poorly-defined Finding a model using Google Scholar: (model$ or framework$ or theoretical or theory or concept or conceptual) - needs some refinement! a priori themes - lack of team consensus Baxter et al. (2011) 59 studies retrieved and analysed to yield 7 themes This quantity of research lends itself well to superficial categorisation and description "several smaller, more targeted searches to identify evidence" Like a really good literature review or narrative SR? Pop quiz! 1. You are interested in health consumer behaviours. You find 45+ papers, have limited time, and you want to build a theory, which method do you choose (thematic, framework or best fit)? 2. You want to examine 'fear of being judged' as a barrier to seeking dental treatment in meth addicts. No previous review has explored this. There are less than 4 relevant studies. Your review will help public health workers gain a better understanding of this barrier. Help and support QES registry (over 7000 studies on Mendeley): http://www.mendeley.com/groups/518691/cochrane-qes-register/ ASQUS - JISCmail list (low traffic) Esquire wiki (this was a 3 day session):
http://esquiresheffield.pbworks.com/w/page/10399148/FrontPage #1 KM tip= Talk to me! Critical appraisal JBI-QARI Checklist: questions ask about congruity, context, influence of researcher, voice of participants, ethics, appropriateness of conclusions) CASP NICE Guidelines manual: Appendix i http://www.casp-uk.net/wp-content/uploads/2011/11/CASP_Qualitative_Appraisal_Checklist_14oct10.pdf What is your path of least resistance?
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