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BackgroundUsing contemporary data from NORIC (Norwegian Registry of Invasive Cardiology) we investigated the predictive value of patient age and time from ECG diagnosis to sheath insertion (ECG‐2‐sheath) in primary percutaneous coronary intervention for ST‐segment–elevation myocardial infarction (STEMI).Methods and ResultsData from 11 226 patients collected from all centers offering 24/7/365 primary percutaneous coronary intervention service were explored. For patients aged Pvalue 80 years and mortality at 30 days, mortality was 10.5% and 17.7% for Restricted mean survival gains during median 938 days of follow‐up in patients with ECG‐2‐sheath time ConclusionsTime from ECG‐diagnosis to sheath insertion is strongly correlated with mortality. This applies especially to octogenarians who derive the most in terms of absolute mortality reduction.RegistrationURL:https://helsedata.no/en/forvaltere/norwegian‐institute‐of‐public‐health/norwegian‐registry‐of‐invasive‐cardiology/.