Dr. Grunwald has been a faculty member at the CU Anschutz Medical Campus since 1997. His statistical methods research is mainly in correlated and non-normal data, and more recently in stochastic modeling and multi-level analysis, with applications in outcomes research. Most of his recent collaborative work has been in the area of cardiovascular outcomes research with the Denver VA CART and COIN groups. In these settings, he works extensively with big EHR data compiled from numerous patient and hospital record systems, and applies and develops state of the art statistical methods for analysis of the resulting data to answer clinical and health services research questions. He teaches and co-teaches several graduate courses including Statistical Consulting, Correlated Data, and Stochastic Modeling. He has mentored or co-mentored six PhD and 16 MS students as well as several junior faculty members. He also serves in administrative positions as the director and co-director of biostatistics graduate programs (16 years) and chair of the ColoradoSPH Appointments, Promotions and Tenure Committee (10 years).
Areas of Expertise
- Biostatistics
- Correlated data
- Non-normal data
- Health outcomes research
- Statistical methods in cardiology
Education, Licensure & Certifications
- PhD, Statistics, University of Washington, 1987
- MA, Mathematics, University of Oregon, 1978
- BS, Engineering/Applied Math, Colorado School of Mines, 1976
Resumes/CV:
Awards
- Faculty Excellence in Mentoring Award, ColoradoSPH, 2015
- Dean's Mentoring Award, CU Anschutz Graduate School, 2013
Courses
- BIOS 6621/22 Statistical Consulting I & II
- BIOS 7712 Correlated Non-normal Data
Publications and Presentations
- Grunwald GK, Arnett JA, Liu W, Ho PM. (2020) Bayesian profiling for cost with zeros to decompose total cost into probability of cost and mean non-zero cost. Biometrical Journal.
- Liu W, Grunwald GK, Ho PM. (2019) Two-part models for cost with zeros to compare effects of covariates on probability of cost, mean non-zero cost, and mean total cost. Statistics in Medicine 38:2767-2782
- Valle JA, Glorioso TJ, Schuetze KB, Grunwald GK, Armstrong EJ, Waldo SW. (2019) Contemporary use of embolic protection devices during saphenous vein graft intervention: Insights from the Veterans Affairs Clinical Assessment, Reporting and Tracking program. Circulation: Cardiovascular Interventions 12:e007636
- Glorioso T, Grunwald GK, Ho, PM, Maddox TM. (2018) Interpreting, quantifying and comparing random and fixed effects in non-normal multilevel models. BMC Medical Research Methodology, 18:74
- Carlson NE, Grunwald GK, Johnson TD. (2016) Using Cox cluster processes to model the pulse generating mechanism driving time series of hormone data. Biostatistics, 17:320-333