{"claimId":"clm_ec_caf_cog","grade":"A","version":0,"status":"current","verdict":"Caffeine for cognition: Grade A at high certainty. reliably improves alertness, reaction time, and vigilance","direction":"benefit","magnitude":{"metric":"other","value":null,"unit":"","ci95":null,"humanReadable":"reliably improves alertness, reaction time, and vigilance","baselineAbsoluteRisk":null},"certainty":"high","clinicalMeaning":"moderate","applicability":{"appliesTo":["adults"],"doesNotApply":[],"unknown":[]},"safetyQualifiers":[],"evidenceBundleId":"eb_ec_caf_cog","citations":[{"pmid":"27612937","design":"peer-reviewed"}],"reviewedBy":null,"reviewedAt":"2026-07-16T04:25:30.364Z","dateModified":"2026-07-16T04:25:30.364Z","methodologyVersion":"v1","methodologyDoi":"https://doi.org/10.5281/zenodo.21364236","canonicalUrl":"https://evidencebased.info/interventions/caffeine/cognition","attribution":"Substrate (evidencebased.info), claim clm_ec_caf_cog v0, reviewed 2026-07-16","license":"CC-BY-4.0 proposed; reuse license pending governance ratification","governanceMode":"legacy","governanceStatus":"legacy-unverified","dataSource":"live"}