title: Apples, oranges, and national databases: commentary on an article by Daniel D. Bohl, MPH, et al.: "Variations in data collection methods between national databases affect study results: a comparison of the nationwide inpatient sample and national surgical quality improvement program databases for lumbar spine fusion procedures".
authors.affiliation: Department of Orthopaedic Surgery, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, New York.
authors.forename: Paul E
authors.initials: PE
authors.lastname: Levin
mesh_terms: D003625:Data Collection / Q000379:methods*; D016208:Databases, Factual; D005260:Female; D006801:Humans; D008159:Lumbar Vertebrae / Q000601:surgery*; D008297:Male; D017063:Outcome Assessment, Health Care / Q000379:methods*; D013123:Spinal Fusion