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Papers published by Dr Ola Olén:

Original Research

Normal Gastrointestinal Mucosa at Biopsy and Overall Mortality: Nationwide Population-Based Cohort Study

Ludvigsson JF, Sun J, Olén O, Song M, Halfvarson J, Roelstraete B, Khalili H, Fang F

Clinical Epidemiology 2022, 14:889-900

Published Date: 21 July 2022

Original Research

Identification of Childhood-Onset Inflammatory Bowel Disease in Swedish Healthcare Registers: A Validation Study

Mouratidou N, Malmborg P, Järås J, Sigurdsson V, Sandström O, Fagerberg UL, Bröms G, Ludvigsson JF, Olén O

Clinical Epidemiology 2022, 14:591-600

Published Date: 29 April 2022

Original Research

A Novel Method for Quantifying Intestinal Inflammatory Burden in Inflammatory Bowel Disease Using Register Data

Axelrad JE, Sachs MC, Ludvigsson JF, Olén O

Clinical Epidemiology 2020, 12:1059-1072

Published Date: 9 October 2020

Original Research

Work Loss in Relation to Pharmacological and Surgical Treatment for Crohn’s Disease: A Population-Based Cohort Study

Everhov ÅH, Sachs MC, Ludvigsson JF, Khalili H, Askling J, Neovius M, Myrelid P, Halfvarson J, Nordenvall C, Söderling J, Olén O

Clinical Epidemiology 2020, 12:273-285

Published Date: 10 March 2020