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Visual acuity: Calculating appropriate averages
Author(s) -
Moseley Merrick J,
Jones Helen S
Publication year - 1993
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.1993.tb07138.x
Subject(s) - visual acuity , series (stratigraphy) , optometry , mathematics , computer science , medicine , statistics , ophthalmology , paleontology , biology
Controversy surrounds the averaging of visual acuity scores We examine this debate and provide a series of guidelines and worked examples to enable investigators to select an average (eg arithmetic mean, geometric mean, median) appropriate for their data