Ian J. Barnett, PhD

Dr. Barnett has worked on several of the most exciting areas in biomedical data-science research, having developed novel statistical methods for large-scale genetic association analysis and for analysis of data from wearable devices and mobile health.

Dr. Barnett received his PhD in Biostatistics from Harvard University in June 2014 and joined the faculty of the University of Pennsylvania in July 2017. His primary research focus is in the development of statistical methods for high-dimensional and correlated data, particularly with applications to mobile health and genetics. Other areas of research interest include the analysis of networks, longitudinal data, and missing data methods. His collaborative work focuses on modeling clinical outcomes in areas ranging from psychiatric disorders to neurosurgical recovery with passively collected behavioral mobile health data from smartphones.

Recent Publications

  1. Staples, P., Torous, J., Barnett, I., Carlson, K., Sandoval, L., Keshavan, M., Onnela, J-P. "A Comparison of Passive and Active Estimates of Sleep In a Cohort with Schizophrenia." npj Schizophrenia, In press. 2017.
  2. Barnett, G.,Barnett, I., Wilson, S., and Smith, P. "A comparison of six injectable anesthetic regimens in the gray short-tailed opossum." Journal of the American Association for Laboratory Animal Science, In press. 2017.
  3. Barnett, I., Mukherjee, R., and Lin, X. "The Generalized Higher Criticism for testing SNP-sets in genetic association studies." Journal of the American Statistical Association: Case Studies and Applications. 112(517): 64-76. 2017.
  4. Barnett I., Onnela, J-P. "Change point detection in correlation networks." Scientific Reports, 6. 2016.
  5. Barnett, I., Khanna, T., and Onnela, J-P. "Social and Spatial Clustering of People at Humanity's Largest Gathering." PloS one, 11(6). 2016.
  6. Barnett I., Lin, X. "Analytical p-values calculation for the higher criticism test in finite-d problems." Biometrika, 101(4):964-970. 2014.
  7. Fan, T., Fang, S. C., Cavallari, J. M., Barnett, I., Wang, Z., Su, L., ..., and Christiani, D. C. "Heart rate variability and DNA methylation levels are altered after short-term metal fume exposure among occupational welders: a repeated-measures panel study." BMC public health, 14(1), 1. 2014.
  8. Barnett, I., Lee, S., and Lin, X. "Detecting rare variant effects using extreme phenotype sampling in sequencing association studies." Genetic Epidemiology, 37(2):142-151. 2013.