Most scientific paper retractions due to misconduct
Raw Story reports that “When a biomedical study is retracted, most of the time it is because of misconduct rather than error, a report published Monday said. Two-thirds of all retractions around the world stem from acts like fraud, suspected fraud or plagiarism, it added.”
The relevant paper is the Fang et al. (2012).
Fang, Steen, and Casadevall, 2012: Misconduct accounts for the majority of retracted scientific publications. PNAS, 109, 17028–17033.