Eric Johnson, MS, completed the University of Washington’s biostatistics master’s program in 2008. His thesis explored common theoretical problems involved with missing data. He quantified them, highlighting conditions leading to suboptimal performance, and provided new guidelines for using various multiple imputation techniques.
During his time at KPWHRI, Mr. Johnson has been involved with multiple projects involving direct intervention with the care-delivery system, observational studies and microsimulation modeling on colorectal and ovarian cancer, massage therapy, and estimating radiation exposure from medical imaging. His current responsibilities lie in research on obesity, opioids, and mental health.
Before earning his master’s degree, Mr. Johnson worked for four years as a research assistant on the Multi-Ethnic Study of Atherosclerosis (MESA), performing statistical analyses, verifying incoming data, and developing a process for providing data sets to all MESA researchers. Later, he was a research statistician with the Department of Veteran Affairs (VA), serving as the primary analyst in an investigation of how well VA hospitals performed non-cardiac surgeries. Mr. Johnson assessed statistical models used by the National Surgical Quality Improvement Program—then devised, tested, and implemented improved models, reporting his findings to VA leadership.
Multiple imputation; prediction models, working with large data
Implementing prediction models, and validating that they work as intended. Research into interventions that are financially feasible for health systems to widely implement
Coleman KJ, Johnson E, Ahmedani BK, Beck A, Rossom RC, Shortreed SM, Simon GE. Predicting suicide attempts for racial and ethnic groups of patients during routine clinical care. Suicide Life Threat Behav. 2019 Jun;49(3):724-734. doi: 10.1111/sltb.12454. Epub 2018 Mar 24. PubMed
Simon GE, Johnson E, Stewart C, Rossom RC, Beck A, Coleman KJ, Waitzfelder B, Penfold R, Operskalski BH, Shortreed SM. Does patient adherence to antidepressant medication actually vary between physicians? J Clin Psychiatry. 2018 May/Jun;79(3). pii: 16m11324. doi: 10.4088/JCP.16m11324. PubMed
Simon GE, Shortreed SM, Johnson E, Beck A, Coleman KJ, Rossom RC, Whiteside US, Operskalski BH, Penfold RB. Between-visit changes in suicidal ideation and risk of subsequent suicide attempt. Depress Anxiety. 2017 Sep;34(9):794-800. doi: 10.1002/da.22623. Epub 2017 Apr 25. PubMed
Penfold RB, Stewart C, Simon GE, Shortreed SM, Johnson E, Rossom RC, Operskalski B, Beck A. Antidepressant use by youth with minimal or mild depression: evidence from 3 health systems. Pediatr Qual Saf. 2017;2(2). pii: e017. Epub 2017 Mar 22. PubMed
Rossom RC, Coleman KJ, Ahmedani BK, Beck A, Johnson E, Oliver M, Simon GE. Suicidal ideation reported on the PHQ9 and risk of suicidal behavior across age groups. J Affect Disord. 2017 Mar 16;215:77-84. doi: 10.1016/j.jad.2017.03.037. [Epub ahead of print]. PubMed
Shortreed SM, Johnson EJ, Rutter CM, Kamineni A, Wernli KJ, Chubak J. Cohort restriction based on prior enrollment: Examining potential biases in estimating cancer and mortality risk. Obs Stud. 2016 Aug;2:51-64. Epub 2016 Sep 26. PubMed
Hsu CW, Hertel E, BlueSpruce J, Ross TR, Cheadle A, Johnson E, Matthys J, Ehrlich K, Coleman K, Tufte J, Robbins M, Fishman P. Connecting primary care patients to community resources: lessons learned from the development of a new lay primary care team role. J Patient Cent Res Rev. 2016;3:218.
Hubbard R, Johnson E, Chubak J, Wernli KJ, Kamineni A, Bogart A, Rutter C. Estimating screening test effectiveness when screening indication is unknown using generalized linear finite mixture models. Health Services Outcomes Res Methodol.2017 17(2):101-112.
Coleman KJ, Haneuse S, Johnson E, Bogart A, Fisher D, O'Connor PJ, Sherwood NE, Sidney S, Theis MK, Anau J, Schroeder EB, O'Brien R, Arterburn D. Long-term microvascular disease outcomes in patients with type 2 diabetes after bariatric surgery: evidence for the legacy effect of surgery. Diabetes Care. 2016 Jun 6. pii: dc160194. [Epub ahead of print]. PubMed
Hubbard RA, Johnson E, Chubak J, Wernli K, Kamineni A, Bogart A, Rutter CM. Accounting for misclassification in electronic health records-derived exposures using generalized linear finite mixture models. Health Serv Outcomes Res Methodol. 2017 Jun;17(2):101-112. doi: 10.1007/s10742-016-0149-5. Epub 2016 Jun 3. PubMed
David Arterburn and colleagues find that bariatric surgery is linked to lower death risk in persons with obesity and CKD.
Diverse Kaiser Permanente patients maintained weight better after gastric bypass than after sleeve gastrectomy
Dr. Rob Penfold leads pragmatic trial of new online version of proven program developed by UW colleagues.
KPWHRI’s Dr. David Arterburn and Dr. Rebecca O’Brien, Kaiser Permanente Northern California, talk about results from their recent study. (YouTube, 1:48)
Dr. David Arterburn discusses reassuring news from his PCORnet study of the most widely used anti-obesity drug in the United States.