title: Immortal time bias: a likely alternate explanation for the purported benefits of DXA Screening in ulcerative colitis.
authors.affiliation: Department of Gastroenterology, University of Manitoba, Winnipeg, Manitoba, Canada.
authors.forename: Laura E
authors.initials: LE
authors.lastname: Targownik
mesh_terms: D015502:Absorptiometry, Photon / Q000706:statistics & numerical data*; D000305:Adrenal Cortex Hormones / Q000009:adverse effects*; D000893:Anti-Inflammatory Agents / Q000009:adverse effects*; D003093:Colitis, Ulcerative / Q000150:complications*; D005260:Female; D019983:Guideline Adherence / Q000706:statistics & numerical data*; D006801:Humans; D008297:Male; D010024:Osteoporosis / Q000000981:diagnostic imaging*; D058866:Osteoporotic Fractures / Q000517:prevention & control*
chemical_list: D000305:Adrenal Cortex Hormones; D000893:Anti-Inflammatory Agents