ProQuest Dissertations & Theses Global (PQDT Global) database is the world's most comprehensive collection of multidisciplinary dissertations and theses, featuring 6 million records from more than 70 countries and over 4,100 institutions,of which 3.6 million are full-text titles. PQDT Global adds more than 300,000 new full text dissertations each year and has metadata from 1637-current and full text from 1997-current, with select older titles. This research contains valuable perspectives that contribute to the advancement of knowledge across many disciplines, playing an essential role in systematic reviews and providing insights into emerging research not yet published in other scholarly sources.