Statistics Publications:

L.Y.T. Inoue, R.Etzioni, C. Morrell and P. Muller (2008) “Modeling Disease Progression with Longitudinal Markers,” Journal of the American Statistical Association, 103, 259-270.

Christopher Morrell, Larry J. Brant, and Shan L. Sheng, (2007) "Comparing Approaches for Predicting Prostate Cancer from Longitudinal Data,” 2007 Proceedings of the American Statistical Association, Biometrics Section [CD-ROM], Alexandria, VA: American Statistical Association, 127-133.

Veena Shetty, Christopher Morrell, and Samer S. Najjar, (2007) “Modeling a Cross-Sectional Response Variable with Longitudinal Predictors: An Example of Pulse Pressure and Pulse Wave Velocity,” 2007 Proceedings of the American Statistical Association, Section on Statistics in Epidemiology [CD-ROM], Alexandria, VA: American Statistical Association, 2453-2457.

C.H. Morrell and R.E. Auer (2007) "Trashball: A Logistic Regression Classroom Activity," Journal of Statistics Education, 15, n.1. pdf

Elizabeth J. Walters, Christopher H. Morrell, Richard E. Auer (2006) “An Investigation of the Median-Median Method of Linear Regression,” Journal of Statistics Education, 14, n.2.

Christopher H. Morrell, Larry J. Brant, Shan Sheng, E. Jeffrey Metter (2005) “Using Multivariate Mixed-Effects Models to Predict Prostate Cancer,” 2005 Proceedings of the American Statistical Association, Biometrics Section [CD-ROM], Alexandria, VA: American Statistical Association, 332-337.

Larry J. Brant, Shan L. Sheng, Christopher H. Morrell, and Alan B. Zonderman (2005) "Data from a Longitudinal Study Provided Measurements of Cognition to Screen for Alzheimer’s Disease," Journal of Clinical Epidemiology, 58(7), 701-707.

Christopher H. Morrell and Richard E Auer, (2004) “Trashball: A Logistic Regression Classroom Activity,” 2004 Proceedings of the American Statistical Association, Section on Statistical Education [CD-ROM], Alexandria, VA: American Statistical Association, 2761-2765.

Inoue, L.Y.T., Etzioni, R., Slate, E.H., Morrell, C.H., and Penson, D.F. (2004) ‘Combining Longitudinal Studies of PSA,’ Biostatistics, 5, 483-500.

DeCampo, J., Harp, K.,  and Morrell, C.H. (2004) 'A Comparative Study of Methods of Analyzing Gene Expression Data,' Technical Report 2004-01,  Mathematical Sciences Department, Loyola College in Maryland.

Christopher H. Morrell, Larry J. Brant, Shan Sheng, Samer Najjar (2003) “Using Multivariate Mixed-Effects Models to Predict Hypertension,” The Proceedings of the Biometrics Section of the American Statistical Association, 2916-2921. 

Elizabeth J. Walters, Christopher H. Morrell, Richard E. Auer (2003) “An Investigation of the Median-Median Method of Linear Regression,” Proceedings of the American Statistical Association Section on Statistical Education, 4419-4424.

Morrell, C.H., Brant, L.J., Pearson, J.D., Verbeke, G.N.M., and Fleg, J.L. (2003) ‘Applying Linear Mixed-Effects Models to the Problem of Measurement Error in Epidemiologic Studies,’ Communications in Statistics: Simulation and Computation, 32(2), 437 - 459.

Brant, L.J., Sheng, S.L., Morrell, C.H., Verbeke, G.N., Lesaffre, E., and Carter, H.B. (2003) >Screening for Prostate Cancer by Using Random-Effects Models,=  Journal of the Royal Statistical Society: Series A, 166, 51-62.

Morrell, CH, Sheng, S, Zonderman, A, and Brant, LJ, (2001) ‘Screening for Dementia Using Longitudinal Measurements of Cognition,' The Proceedings of the Biometrics Section of the American Statistical Association.

Morrell, C.H. and Brant, L.J. (2000) 'A Two-Stage Linear Mixed-Effects/Cox Model for Longitudinal Data with Measurement Error and Survival,' The Proceedings of the Biometrics Section of the American Statistical Association, 198-203.

Morrell, C.H. and Brant, L.J. (2000) ‘Lines in Random Effects Plots From the Linear Mixed-Effects Model,' The American Statistician, 54, 1-4.

Morrell, C.H.(1999) 'Simpson's Paradox: An Example From a Longitudinal Study in South Africa,' Journal of Statistics Education, v.7, n.3.

McGuire, K.M., Mackiw, G., and Morrell, C.H. (1999) 'The Secret Santa Problem,' The Mathematical Gazette, 83, No. 498, 467-472. (Loyola Bulletin Article)

Morrell, C.H. (1998) ‘Likelihood Ratio Testing of Variance Components in the Linear Mixed-Effects Model Using Restricted Maximum Likelihood,' Biometrics, 54, 1560-1568.

Maritz, J.S., Lombard, C.J., and Morrell, C.H. (1998) 'Exact Group Comparisons Using Irregular Longitudinal Data,' Journal of the Royal Statistical Society: Series C - Applied Statistics, 47, 351-360. (This paper received the 1999 Herbert Sichel Award from the South African Statistical Association for the best publication by a member of the South African Statistical Association.)

Morrell, C.H., Pearson, J.D., and Brant, L.J. (1997) 'Linear Transformations of Linear Mixed-Effects Models,' The American Statistician, 51, 338-343.

Morrell, C.H., Pearson, J.D., Brant, L.J., and Gordon-Salant, S. (1997) 'Construction of Hearing Percentiles in Women with Non-Constant Variance from the Linear Mixed-Effects Model,' Statistics in Medicine, 16, 2475-2488.

Morrell, C.H., Pearson, J.D., Carter, H.B. and Brant, L.J. (1995) 'Estimating Unknown Transition Times Using a Piecewise Nonlinear Mixed-Effects Model in Men with Prostate Cancer,' Journal of the American Statistical Association, 90, 45-53.

Pearson, J.D., Morrell, C.H., Landis, P.K., Carter, H.B., and Brant L.J. (1994) 'Mixed-Effects Regression Models for Studying the Natural History of Prostate Disease,' Statistics in Medicine, 13, 587-601.

Johnson, R.A., Morrell, C.H. and Schick, A. (1992) 'Two Sample Nonparametric Estimation and Confidence Intervals Under Truncation,' Biometrics, 48, 1043-1056.

Morrell, C.H. and Johnson, R.A. (1992) 'Estimation from K Independent Randomly Truncated Samples: Application to Neutrino Energies,' Communications in Statistics, 21, 3335-3350.

Morrell, C.H. and Johnson, R.A. (1991) 'Random Truncation and Neutrinos,' Technometrics, 33, 429-440. (This paper received the Frank Wilcoxon Prize for best applications paper in Technometrics for 1991.)