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Extracting numerical data from published reports of pharmacokinetics investigations: method description and validation
Author(s) -
Oliveira Irismar Reis,
SantosJesus Rogério,
Po Alain Li Wan,
Poolsup Nalinee
Publication year - 2003
Publication title -
fundamental and clinical pharmacology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.655
H-Index - 73
eISSN - 1472-8206
pISSN - 0767-3981
DOI - 10.1046/j.1472-8206.2003.00180.x
Subject(s) - adobe photoshop , point (geometry) , computer science , magnification , graphical display , computer graphics (images) , data mining , algorithm , artificial intelligence , mathematics , software , programming language , geometry
A method has been proposed for extracting numerical data when only graphical results are presented. Reports with both graphical and tabular data were identified and the graphs were electronically scanned. The coordinates of each point were read using the cross‐hair facility of Adobe Photoshop 7.0. To improve the precision of these coordinates, each point was read at 1600% magnification. The agreement between the observers was almost perfect ( R > 0.99). The proposed method makes possible use of data in meta‐analyses that, would otherwise be discarded.