{"id":"https://openalex.org/W2418503544","doi":null,"title":"Comparison of search strategies for recalling double-blind trials from MEDLINE.","display_name":"Comparison of search strategies for recalling double-blind trials from MEDLINE.","publication_year":1991,"publication_date":"1991-12-01","ids":{"openalex":"https://openalex.org/W2418503544","mag":"2418503544","pmid":"https://pubmed.ncbi.nlm.nih.gov/1802637"},"language":"en","primary_location":{"id":"pmid:1802637","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/1802637","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Danish medical bulletin","raw_type":"Comparative Study"},"volume":null,"type":"article","indexed_in":["pubmed"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5112157453","display_name":"G\u00f8tzsche Pc","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I2802709434","display_name":"Rigshospitalet","ror":"https://ror.org/03mchdq19","country_code":"DK","type":"healthcare","lineage":["https://openalex.org/I2802567020","https://openalex.org/I2802709434","https://openalex.org/I4210145385"]}],"countries":["DK"],"is_corresponding":false,"raw_author_name":"P C G\u00f8tzsche","raw_affiliation_strings":["Medical Department A, Rigshospitalet, Copenhagen"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Medical Department A, Rigshospitalet, Copenhagen","institution_ids":["https://openalex.org/I2802709434"]}]},{"author_position":"last","author":{"id":null,"display_name":"B Lange","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"B Lange","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":5.1692,"has_fulltext":false,"cited_by_count":24,"citation_normalized_percentile":{"value":0.95843137,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":null,"biblio":{"volume":"38","issue":"6","first_page":"476","last_page":"8"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10206","display_name":"Meta-analysis and systematic reviews","score":0.9965999722480774,"subfield":{"id":"https://openalex.org/subfields/1804","display_name":"Statistics, Probability and Uncertainty"},"field":{"id":"https://openalex.org/fields/18","display_name":"Decision Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},"topics":[{"id":"https://openalex.org/T10206","display_name":"Meta-analysis and systematic reviews","score":0.9965999722480774,"subfield":{"id":"https://openalex.org/subfields/1804","display_name":"Statistics, Probability and Uncertainty"},"field":{"id":"https://openalex.org/fields/18","display_name":"Decision Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T10286","display_name":"Information Retrieval and Search Behavior","score":0.0015999999595806003,"subfield":{"id":"https://openalex.org/subfields/1710","display_name":"Information Systems"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11555","display_name":"Methodologies in Health Research and Practice","score":0.00019999999494757503,"subfield":{"id":"https://openalex.org/subfields/3605","display_name":"Health Information Management"},"field":{"id":"https://openalex.org/fields/36","display_name":"Health Professions"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/medline-search-strategy","display_name":"MEDLINE search strategy","score":0.7570000290870667},{"id":"https://openalex.org/keywords/reference-bias","display_name":"reference bias","score":0.6190000176429749},{"id":"https://openalex.org/keywords/literature-search","display_name":"literature searching","score":0.6299999952316284},{"id":"https://openalex.org/keywords/precision-and-recall","display_name":"precision and recall","score":0.7670000195503235},{"id":"https://openalex.org/keywords/medical-subject-headings","display_name":"Medical Subject Headings","score":0.9309999942779541},{"id":"https://openalex.org/keywords/nonsteroidal-anti-inflammatory-drugs","display_name":"nonsteroidal anti-inflammatory drugs","score":0.7429999709129333},{"id":"https://openalex.org/keywords/rheumatoid-arthritis","display_name":"rheumatoid arthritis","score":0.9980000257492065},{"id":"https://openalex.org/keywords/comparative-analysis","display_name":"comparative analysis","score":0.5090000033378601},{"id":"https://openalex.org/keywords/randomization","display_name":"randomization","score":0.5709999799728394}],"concepts":[{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.8764753937721252},{"id":"https://openalex.org/C2779473830","wikidata":"https://www.wikidata.org/wiki/Q1540899","display_name":"MEDLINE","level":2,"score":0.7203807234764099},{"id":"https://openalex.org/C2991744798","wikidata":"https://www.wikidata.org/wiki/Q608510","display_name":"Double blind","level":4,"score":0.7057285308837891},{"id":"https://openalex.org/C100660578","wikidata":"https://www.wikidata.org/wiki/Q18733","display_name":"Recall","level":2,"score":0.6138308048248291},{"id":"https://openalex.org/C535046627","wikidata":"https://www.wikidata.org/wiki/Q30612","display_name":"Clinical trial","level":2,"score":0.5204865336418152},{"id":"https://openalex.org/C204787440","wikidata":"https://www.wikidata.org/wiki/Q188504","display_name":"Alternative medicine","level":2,"score":0.18272826075553894},{"id":"https://openalex.org/C27081682","wikidata":"https://www.wikidata.org/wiki/Q269829","display_name":"Placebo","level":3,"score":0.14005127549171448},{"id":"https://openalex.org/C180747234","wikidata":"https://www.wikidata.org/wiki/Q23373","display_name":"Cognitive psychology","level":1,"score":0.13657811284065247},{"id":"https://openalex.org/C126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","level":1,"score":0.13248032331466675},{"id":"https://openalex.org/C142724271","wikidata":"https://www.wikidata.org/wiki/Q7208","display_name":"Pathology","level":1,"score":0.12342727184295654},{"id":"https://openalex.org/C15744967","wikidata":"https://www.wikidata.org/wiki/Q9418","display_name":"Psychology","level":0,"score":0.0},{"id":"https://openalex.org/C199539241","wikidata":"https://www.wikidata.org/wiki/Q7748","display_name":"Law","level":1,"score":0.0},{"id":"https://openalex.org/C17744445","wikidata":"https://www.wikidata.org/wiki/Q36442","display_name":"Political science","level":0,"score":0.0}],"mesh":[{"descriptor_ui":"D000043","descriptor_name":"Abstracting and Indexing","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D002986","descriptor_name":"Clinical Trials as Topic","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D004311","descriptor_name":"Double-Blind Method","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D016239","descriptor_name":"MEDLINE","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true}],"locations_count":2,"locations":[{"id":"pmid:1802637","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/1802637","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Danish medical bulletin","raw_type":"Comparative Study"},{"id":"mag:2418503544","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/1802637","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":"PubMed","raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[],"sustainable_development_goals_aurora":[{"id":"https://metadata.un.org/sdg/4","display_name":"Quality education","score":0.7400000095367432}],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W1600304481","https://openalex.org/W1891459977","https://openalex.org/W2159865972","https://openalex.org/W2064622627","https://openalex.org/W2161479801","https://openalex.org/W1530232666","https://openalex.org/W4246522321","https://openalex.org/W28727866","https://openalex.org/W1982885757","https://openalex.org/W4229668175"],"abstract_inverted_index":{"To":[0],"minimise":[1],"the":[2,32,39,53,69,86,98],"effect":[3],"of":[4,23,41,44,78,94],"reference":[5],"bias":[6],"in":[7,46],"literature":[8],"retrieval,":[9],"it":[10],"is":[11,129],"important":[12],"to":[13,88,131],"use":[14],"computerised":[15],"search":[16,29,83],"strategies":[17],"that":[18,30,126],"give":[19],"a":[20,27,76,92],"high":[21],"yield":[22],"relevant":[24,105],"reports.":[25,123],"In":[26],"MEDLINE":[28],"included":[31],"Medical":[33],"Subject":[34],"Heading":[35],"(MeSH)":[36],"\"Comparative":[37,127],"study,\"":[38],"recall":[40,70,87],"double-blind":[42,136],"trials":[43,137],"NSAIDs":[45],"rheumatoid":[47],"arthritis":[48],"was":[49,55,61,71,111],"93.1%":[50],"(122/131)":[51],"and":[52,109],"precision":[54,77,93],"19.0%":[56],"(122/641).":[57],"When":[58],"\"Double-blind":[59,132],"method\"":[60,133],"used,":[62],"either":[63],"as":[64],"MeSH":[65,99],"or":[66],"text":[67],"words,":[68],"only":[72,103],"72.5%":[73],"(95/131)":[74],"with":[75,91],"22.7%":[79],"(95/419).":[80],"A":[81],"combined":[82],"strategy":[84],"increased":[85],"97.7%":[89],"(128/131)":[90],"17.3%":[95],"(128/738).":[96],"With":[97],"term":[100],"\"Random":[101],"allocation\"":[102],"eight":[104],"reports":[106],"were":[107],"retrieved,":[108],"none":[110],"new.":[112],"By":[113],"using":[114],"\"Clinical":[115],"trials\"":[116],"alone,":[117],"we":[118],"would":[119],"have":[120],"missed":[121],"eleven":[122],"We":[124],"conclude":[125],"study\"":[128],"preferable":[130],"when":[134],"searching":[135],"on":[138],"MEDLINE.":[139]},"counts_by_year":[],"updated_date":"2026-10-31T12:09:11.096373","created_date":"2016-06-24T00:00:00"}
