I normally don’t recommend articles that are stuck behind pay walls, but this is an important article. It shows how 85% of a sample of research studies using the National Inpatient Sample database failed to follow at least one of seven well documented practice recommendations of the Agency for Healthcare Research and Quality.
Rohan Khera, Suveen Angraal, Tyler Couch, John W. Welsh, Brahmajee K. Nallamothu, Saket Girotra, Paul S. Chan, Harlan M. Krumholz. Adherence to Methodological Standards in Research Using the National Inpatient Sample. JAMA. 2017;318(20):2011-2018. doi:10.1001/jama.2017.17653. Abstract available at https://jamanetwork.com/journals/jama/article-abstract/2664461.