the.com/efficacy
Proof it works in theory, not just that it works in your medicine cabinet.
means The power a thing has to produce the effect it's supposed to produce, especially under ideal or tested conditions.
from From Latin efficacia, from efficax ('effective, powerful'), built from the verb efficere — 'to work out, accomplish' — itself a combination of ex- ('out, thoroughly') and facere ('to make or do'). So at bottom it just means 'the making-it-happen-ness' of a thing — the same facere root that gives us 'fact' and 'factory.'
- vs effectiveness
- efficacy is lab conditions, effectiveness is real messy life
- trial standard
- drugs need efficacy data before FDA even looks twice
- word root
- latin efficax, meaning powerful enough to actually do it
- placebo's rival
- efficacy only counts once it beats a sugar pill