 Wikipedia scored highest on all criteria except readability, and the authors concluded that Wikipedia is as good as or better than Britannica and a standard textbook.A 2014 perspective piece in the "New England Journal of Medicine" examined Wikipedia pages about 22 prescription drugs to determine if they had been updated to include the most recent FDA safety warnings.It found that 41% of these pages were updated within two weeks after the warning, 23% were updated more than two weeks later, and the remaining 36% had not been updated to include the warning as of more than 1 year later as of January 2014.