“…We collected the following information from each case for the 2000-2008 study time-period: age at diagnosis date, sex, race/ethnicity and evidence of death. We examined important clinical comorbidities at two time-points during the study time-period:1 prior to anti-TNF start and2 anytime during the study time-period, as evidenced by one or more inpatient or outpatient ICD9 code given during these time-frames for diabetes mellitus (250), chronic kidney disease (585), neoplasm (200–208, 195, 196, 162), chronic lung disease including chronic bronchitis, asthma, bronchiectasis, silicosis (491, 492, 493, 494, 495, 496, 502), gastro-esophageal reflux disease (530.81, 530.11). Unfortunately, results of tuberculin skin testing were not reliably available for the study population.…”