PT - JOURNAL ARTICLE AU - Jonathan A Cook AU - Catey Bunce AU - Caroline J Doré AU - Nick Freemantle AU - on behalf of the Ophthalmic Statistics Group TI - Ophthalmic statistics note 6: effect sizes matter AID - 10.1136/bjophthalmol-2014-306303 DP - 2015 May 01 TA - British Journal of Ophthalmology PG - 580--581 VI - 99 IP - 5 4099 - http://bjo.bmj.com/content/99/5/580.short 4100 - http://bjo.bmj.com/content/99/5/580.full SO - Br J Ophthalmol2015 May 01; 99