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. 2011 Sep 13;19(3):473–478. doi: 10.1136/amiajnl-2011-000325

Table 3.

Results of analysis for PubMed queries

Query type Sample size Statistics for no of documents returned R2
Mean SD Range
Abstract views resulting from informational queries 1 324 910 4520.69 95 470.62 1–18 859 689 0.936
Full-text downloads resulting from informational queries 160 469 2658.17 44 837.65 1–6 629 057 0.962
Abstract views resulting from PubMed ID queries 3991 1.34 15.09 1–953 0.926
Full-text downloads resulting from PubMed ID queries 7235 1.03 0.43 1–19 0.931
Full-text downloads resulting from title searches 17 403 1.03 0.0 1–1 0.969
Abstract views resulting from title searches 16 979 1 0.0 1–1 0.934
Full-text downloads resulting from journal and volume search 1233 3.29 21.61 1–326 0.928
Abstract views resulting from journal and volume search 537 8.41 54.6 1–796 0.954