Package version 0.9.9. 250 open-access PMC articles selected for external- validation / replication language (PubMed [tiab] search) and hand-labeled for the replication indicator (a replication or external/independent validation reported as PERFORMED). The general 2023 sample has too few replication positives for a stable sensitivity estimate; this enriched sample provides one.
Positives: 111. Sensitivity 92.8, Specificity 34.5, PPV 53.1.
Specificity and PPV here are not representative of unselected literature: the sample is deliberately rich in validation language, which is the detector's hardest discrimination, so it concentrates false positives (internal splits and reviews that discuss validation). The 2023 1000-article sample gives the representative specificity (98.5). Sensitivity, estimated on the large positive set, is the stable quantity this benchmark contributes.
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