Andrews E, Sturmer T, McGrath LJ, Johnson Funk M, Lund JL, Johannes CB, Gilsenan AW, Powers C. Exploring innovative methods to conduct validation using United States Medicare administrative claims data. Presented at the 32nd ICPE International Conference on Pharmacoepidemiology & Therapeutic Risk Management; August 26, 2016. Dublin, Ireland. [abstract] Pharmacoepidemiol Drug Saf. 2016 Aug; 25(S3):50.
Johannes CB, Chiang CC, Ng EW, Eng PM, Seeger JD, Walker AM. Treatment patterns in patients using biological disease modifying antirheumatic therapy for rheumatoid arthritis. Presented at the 21st International Conference on Pharmacoepidemiology; August 2005. Nashville, TN. [abstract] Pharmacoepidemiol Drug Saf. 2005 Sep; 14(Suppl 2):S195. doi: 10.1002/pds.1136
Cole JA, Johannes CB, Loughlin J, Seeger JD, Velentgas P, Walker AM. Challenges in conducting propensity score matched cohort studies. Presented at the 21st ICPE International Conference on Pharmacoepidemiology & Therapeutic Risk Management; August 2005. Nashville, TN. [abstract] Pharmacoepidemiol Drug Saf. 2005 Aug; 14(Suppl 2):S175.
Johannes CB, Schneider GA, Walker AM, Viveash D, Wallis WJ. Increased incidence of lymphoma among patients with rheumatic diseases based on automated insurance claims information. Presented at the 20th ICPE International Conference on Pharmacoepidemiology & Therapeutic Risk Management; August 22, 2004. Bordeaux, France. [abstract] Pharmacoepidemiol Drug Saf. 2004 Sep 23; 13:S239.
Johannes CB, Schneider GA, Walker AM, Zhao S, Shibata A. Validation of a propensity score developed using claims data in controlling for health status of rheumatic disease patients initiating etanercept compared with other DMARDS. Presented at the 20th ICPE International Conference on Pharmacoepidemiology & Therapeutic Risk Management; August 22, 2004. Bordeaux, France. [abstract] Pharmacoepidemiol Drug Saf. 2004 Sep 23; 13(S1):S16.
Johannes C, Stellato R, McGaffigan P, Calderon V, Gold E. Racial and ethnic differences in hormone use in mid-life women. Presented at the 1999 North American Menopause Society Annual Meeting; 1999. New York, NY. [abstract] Menopause. 1999; 6(4):354-5.
Johannes C, Crawford S, McKinlay S. The effect of alcohol and estrogen replacement therapy (ERT) on estrogen levels in postmenopausal women. Presented at the 30th Annual Meeting of the Society for Epidemiologic Research; 1997. Edmonton, Canada. [abstract] Am J Epidemiol. 1997; 145(Suppl):S1.
Johannes C, McKinlay J, Crawford S. Interviewer effects in a cohort study. Presented at the 1995 Society for Epidemiologic Research 28th Annual Meeting; June 1995. Snowbird, UT. [abstract] Am J Epidemiol. 1995 Jun; 141(11 Suppl):S21.