Data Availability Statement Classification Dataset for Mega-Journal Articles, 2020-2024

This dataset contains article-level Data Availability Statement (DAS) records collected from PubMed Central (PMC) for articles published in PLOS ONE, Scientific Reports, and BMJ Open from 2020 to 2024. Each row represents one PMC article and includes the PMCID, journal, publication year, extracted DAS text, classified DAS type, and detected repository name when applicable. The dataset includes a full analysis file and a Korea-affiliation subset containing articles with at least one Korea-affiliated author. This dataset is associated with the article "Data Availability Statements in Mega Journals: A Comparative Analysis of Global and Korea-Affiliated Publications in Health and Medical Research" published in Learned Publishing (DOI: 10.1002/leap.2083).