Enhancing and explaining search strategies, citing references

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  • Niet systematisch zoeken:
    Quick-and-Dirty
    Best match
    Werkt het beste bij toevoegen van meer en meer specieke termen
    Voordeel:
    + geschikt voor achtergrondvragen waarbij zoekconcepten moeilijk te definieren/scheiden zijn
    Nadelen:
    - Minder transparant en reproduceerbaar
    - overzicht van relevante informatie in 1 keer is onmogelijk
    Systematisch zoeken:
    Conceptuele zoekstijl, ontleding van de vraag in concepten met interne prioritering, is een combinatie van:
    Most unique concept first (meest specifieke aspect eerst)
    Successive Fractions (methode van opvolgende inperkingen)
    Interactive screening (Methode van interactief scannen)
    Operationele zoekstijl, betekenis van de vraag staat centraal, alle aspecten komen terug, is een combinatie van:
    Building Blocks (bouwsteen methode)
    Citation Pearl Growing (parel groei methode - in zekere zin valt deze onder de operationale zoekstijl, meer zie: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1175807/)
    Snowballing
    Meer info:
    http://www.library.uu.nl/medew/it/eric/informatie-zoeken.pdf
    http://www.zoeken-en-vinden.nl/index.php?page=retrieval-woordenboek
  • Enhancing and explaining search strategies, citing references

    1. 1. Medical informatics – 3rd year bachelor thesis - 2014 Joost Daams, MA Medical information specialist, Medical Library AMC j.g.daams@amc.uva.nl Joost Daams – Medical Library AMC – 31 January 2014 Enhancing and explaining search strategies, citing references
    2. 2. Programme 5 steps to enhance your search strategy 2.Explore eligable sources of information 3.Expand your search by applying various retrieval techniques 4.Analyse and then improve your search results (GOPubMed, Carrot2, etc.) 5.Validate your search results Explain your search strategy -Document your search for reporting How to cite results -Use reference management software (Endnote, Refworks, etc.) Joost Daams – Medical Library AMC – 31 January 2014 1.Ask a searchable question (conceptualize, a.o. PICO(S))
    3. 3. Enhance searching 1. Ask a searchable question (slide 1): • foreground question – PICO(S) P – independent living persons aged 65 and over I – lifelogging C – second generation healthcare technologies O – assisting/optimizing (i)adl S – prevention (therapy) … operationalization is required (see next slide) Joost Daams – Medical Library AMC – 31 January 2014 Does lifelogging prove to be more effective then second generation healthcare technologies for assisting/optimizing (i)adl at independent living persons aged 65 and over?
    4. 4. Enhance searching 1. Ask a searchable question (slide 2): • background question – concepts Concepts (and operationalization!): • (third) generation healthcare technologies ambulatory monitoring / monitoring technology / monitoring system / Self Help Device / Assistive Technology / Assistive Technologies / Assistive Device / outpatient monitoring / computer communication network / mobile health / telemetries / smart home / smart environment / Sensing technology / Activity monitoring[tiab] / sensor monitoring / sensor network / automatic recognizing / telemonitoring / lifelogging • (most effective for assisting/optimizing) (i)adl Daily Living Activity / daily activity / ADL / iadl / Self Care / activity of daily living / living indepently / living alone / AMC linear disability score (ALDS) / ADL Katz / Katz-15 /Assessment of Motor and Process Skills (AMPS) /questionnaire on impact on participation and autonomy (IPA) /mini-mental state examination (MMSE) /RAND-36 / sf-36 / short form 36 / shortform 36 • independent living persons aged 65 and over Joost Daams – Medical Library AMC – 31 January 2014 Which (third) generation healthcare technologies are most effective for assisting/optimizing (i)adl at independent living persons aged 65 and over?
    5. 5. Enhance searching 1. Ask a searchable question (slide 3): • Determine eligability (co-) interventions, exposures, population strata, outcome measures, limits (language, period, etc.) Joost Daams – Medical Library AMC – 31 January 2014 • Formulate in-/exclusion criteria, i.e.:
    6. 6. Enhance searching 2. Explore eligable sources of information (slide 1) Background question: -Textbooks -Point of Care tools (i.e.UpToDate) -Guidelines -Google Scholar, Wikipedia, etc. Joost Daams – Medical Library AMC – 31 January 2014 Foreground question: Sources of aggregated evidence
    7. 7. Enhance searching 2. Explore eligable sources of information (slide 2) Google (Scholar): using it is OK, but what about: • integrity • transparency • reproducibillity / validity? (i.e. PageRank) ?? ? ? ?? And what about: • content (first 1000 results limit) • … and (level of) evidence? Joost Daams – Medical Library AMC – 31 January 2014 So, what if your topic isn’t (exclusively) (bio)medical?
    8. 8. Enhance searching 2. Explore eligable sources of information (slide 3) - Browsing lists of available databases by provider (e.g. OVIDSP, Ebscohost, library system: AMC-Literatuur) - Using a discovery tool like PRIMO (http://lib.uva.nl ) - Looking up indexing of journals in unknown/other bibliographic databases (Ulrich’s serials directory: http://ulrichsweb.serialssolutions.com/ ) - Searching meta-registers of (Open Access) repositories (e.g. BASE: http://www.base-search.net/ ) Joost Daams – Medical Library AMC – 31 January 2014 Discover new sources apart from Google Scholar by:
    9. 9. Enhance searching 3. Expand your search by applying various retrieval techniques Joost Daams – Medical Library AMC – 31 January 2014 Non systematic search strategies: • Quick and dirty • Best match Systematic search strategies: • Conceptual most unique concept first successive fractions • Operational Building blocks Citation pearl growing • Snowballing Reference checking Reverse snowballing Reverse snowballing by citation analysis (in a.o. Google Scholar / PubMed / OVIDSP databases / Web of Science)
    10. 10. Enhance searching 4.Analyse your search results (GOPubMed, Carrot2, etc.) - Screening your search results directly - Using analysing tools, like @ Carrot2: http://search.carrot2.org/stable/search @ PubMed PubReMiner: http://hgserver2.amc.nl/cgi-bin/miner/miner2.cgi @ gopubmed: http://gopubmed.org/web/gopubmed/ @ knalij.com: http://knalij.com/ Joost Daams – Medical Library AMC – 31 January 2014 Discover key (networks of) authors, - journals, -(controlled) vocabulary and unidentified concepts by:
    11. 11. Enhance searching 5. Validate your search results 2. Check whether these references are among your search results 3. If not, adjust your query When to stop searching? -When all references of your validation set are retrieved by your search strategy -Choice: continue searching (and possibly loosing relevant records) or start screening -Take into account: left (searching) time Joost Daams – Medical Library AMC – 31 January 2014 1. Create a validation set of preferably 10-20 ‘spot on’ references, acquired outside your systematic search
    12. 12. Explain your search strategy • As part of the methods section • … and as part of an appendix for reasons of transparency and reproducability Database Pubmed Date of search Initial search 18th January 2012, updated 13 th September 2012 Search strategy ("Impulse Control Disorders"[Mesh] OR alcohol dependence[tiab] OR substance dependence[tiab] OR alcohol abuse[tiab] OR substance abuse[tiab] OR "Behavior, Addictive"[Mesh] OR craving[tiab] OR "Substance-Related Disorders"[Mesh] OR alcoholism[tiab] OR alcoholic*[tiab] OR alcohol[tiab] OR marijuana[tiab] OR cannabis[tiab] OR pot[tiab] OR hashish[tiab] OR marihuana[tiab] OR heroin[tiab] OR narcotic*[tiab] OR opioid*[tiab] OR smoking[tiab] OR tobacco[tiab] OR nicotine[tiab] OR "Eating Disorders"[Mesh] OR eating disorder*[tiab] OR appetite[tiab] OR binge eating[tiab] OR "Bulimia"[Mesh] OR bulimia[tiab] OR "overweight"[Mesh] OR overweight[tiab]) AND ("Transcranial Magnetic Stimulation"[Mesh] OR transcranial magnetic stimulation[tiab] OR tms[tiab] OR rtms[tiab] OR repetitive tms[tiab] OR "electroconvulsive therapy"[Mesh] OR electroconvulsive therapy[tiab] OR direct current stimulation[tiab] OR tdcs[tiab] OR transcranial dc stimulation[tiab] OR "Electric Stimulation Therapy"[Mesh] OR electric stimulation therapy[tiab]) Not included in search strategy (no additional relevant records, only noise): Commentary electric stimulation, Prefrontal cortex , cerebral cortex, dlpfc (dorso-lateral prefrontal cortex) Joost Daams – Medical Library AMC – 31 January 2014 2.2. Search strategy Based on both reputation and content coverage, we identified Pubmed, Embase, PsycINFO and relevant sections of The Cochrane Library as the key bibliographic databases for our query. Our enquiry was constructed following to the PICO-method.1 Key elements that we used in our search were the ‘P’ (addicts/addiction to drugs, food, alcohol and nicotine or individuals experiencing strong craving for food), the ‘I’ (rTMS or tDCS stimulation), the ‘C’ (Active and Sham stimulation) and the ‘O’ (craving levels). To minimize the risk of bias, no limits were applied. For reasons of transparency and reproducibility, the complete documentation of the search is included in Appendix 1 of this article.
    13. 13. How to cite results Seems complicated: quality of life. [Polish]. Dermatologia Kliniczna, 13(3): 2011 (9) . [Academy Management] Tyc-Zdrojewska E, Trznadel-Grodzka E, Kaszuba A. The impact of chronic skin diseases on patients' quality of life. [Polish] Dermatologia Kliniczna 2011;13(3):2011 . [Vancouver] Therefore use Endnote (or Refworks etc.) … BUT: Reference Manager alone provides 1394 outputstyles to choose from… If you don’t know, choose the MLA7 or Vancouver output style Joost Daams – Medical Library AMC – 31 January 2014 Tyc-Zdrojewska, E., Trznadel-Grodzka, E., & Kaszuba, A. 2011. The impact of chronic skin diseases on patients’
    14. 14. Recap 5 steps to enhance your search strategy 2.Explore eligable sources of information 3.Expand your search by applying various retrieval techniques 4.Analyse and then improve your search results (GOPubMed, Carrot2, etc.) 5.Validate your search results Explain your search strategy -Document your search for reporting How to cite results -Use reference management software (Endnote, Refworks, etc.) Joost Daams – Medical Library AMC – 31 January 2014 1.Ask a searchable question (conceptualize, a.o. PICO(S))

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