Pankaj Kumar Choudhary

Professor 

Department of Mathematical Sciences  

  University of Texas at Dallas


Contact Information
  
The University of Texas at Dallas
Department of Mathematical Sciences, FO 35
800 West Campbell Road                        
Richardson, TX 75080-3021, USA
                          
 
Office: FO 2.408B
Phone:    972-883-4436
Fax:        972-883-6622
Email:      pankaj AT utdallas DOT edu
Education
B.Sc., Statistics, University of Delhi, India, 1996
M.Sc., Statistics, Indian Institute of Technology, Kanpur, India, 1998
Ph.D., Statistics, Ohio State University, Columbus, OH, USA, 2002

 

 

 


Research Interests
  • Biostatistics
  • Statistical methodology
  • Method comparison studies
  • Risk prediction

 

 


Books

Choudhary, P. K., Nagaraja, C. H. and Ng, H. K. T. (2015) Ordered Data Analysis, Modeling and Health Research Methods - In Honor of H. N. Nagaraja's 60th Birthday, Springer Proceedings in Mathematics & Statistics, Vol. 149, Springer.
Choudhary, P. K. and Nagaraja, H. N. (2017) Measuring Agreement: Models, Methods, and Applications, Wiley. A companion website supplements the book with R code and datasets.

Short Courses

Analysis of Continuous and Categorical Method Comparison Data, Joint Statistical Meetings, July 30, 2018, Vancouver, Canada

Statistical and Machine Learning Methods for Classification Using R , MESIO UPC-UB XIII Summer School, June 17-21, 2019, Barcelona, Spain


Publications

    In peer-reviewed journals

  1. de Silva, G. S. R. and Choudhary, P. K. (2023) Tolerance Bands for Exponential Family Functional Data (with supplement), Canadian Journal of Statistics, to appear. R Code, Illustration 1, Illustration 2, Dataset 1, Dataset 2

  2. Ruberu, T. L. M., Rajapaksha, R. M. D. S., Heitzeg, M. M., Klaus, R., Boden, J. M., Biswas, S., and Choudhary, P. K. (2023) Validation of a Bayesian Learning Model to Predict the Risk of Cannabis Use Disorder, Addictive Behaviors, 146, 107799, https://www.sciencedirect.com/science/article/abs/pii/S0306460323001946?via%3Dihub

  3. Rajapaksha, R. M. D. S., Filbey, F., Biswas, S., and Choudhary, P. K. (2022) A Bayesian Learning Model to Predict the Risk for Cannabis Use Disorder, Drug and Alcohol Dependence, 236, 109476, https://www.sciencedirect.com/science/article/abs/pii/S0376871622002137

  4. Sajal, I. H., Chowdhury, M., Wang, T., Euhus, D., Choudhary, P. K., and Biswas, S. (2022) CBCRisk-Black: A Personalized Contralateral Breast Cancer Risk Prediction Model for Black Women, Breast Cancer Research and Treatment, 194, 179-186, https://pubmed.ncbi.nlm.nih.gov/35562619/

  5. Ruberu, T. L. M., Kenyon, E. A., Hudson, K. A., Filbey, F., Ewing, S. W. F., Biswas, S. and Choudhary, P. K. (2022) Joint Risk Prediction for Hazardous Use of Alcohol, Cannabis, and Tobacco among Adolescents: A Preliminary Study Using Statistical and Machine Learning, Preventive Medicine Reports, 25, 101674, https://www.sciencedirect.com/science/article/pii/S221133552100365X

  6. Rajapaksha, R. M. D. S., Hammonds, R., Filbey, F., Choudhary, P. K. and Biswas, S. (2020) A Preliminary Risk Prediction Model for Cannabis Use Disorder, Preventive Medicine Reports, 20, 101228, https://doi.org/10.1016/j.pmedr.2020.101228

  7. de Silva, G. S. R., Rathnayake, L. N. and Choudhary, P. K. (2020) Modeling and analysis of functional method comparison data (with supplement), Communications in Statistics - Simulation and Computation, https://doi.org/10.1080/03610918.2020.1830292. R Code, Illustration 1, Illustration 2, y1.txt, y2.txt

  8. Rankothgedara, L. N. K. and Choudhary, P. K. (2020) A segmented measurement error model for modeling and analysis of method comparision data (with supplement), Statistics in Medicine, 39, 3491-3502. R Code, Illustration, digoxin.txt

  9. Zhang, L., Papachristou, C., Choudhary, P. K. and Biswas, S. (2020) A Bayesian hierarchical framework for pathway analysis in genome-wide association studies, Human Heredity, doi: 10.1159/000508664

  10. Li, X., Choudhary, P. K., Biswas, S. and Wang, X. (2018) A Bayesian latent variable approach to aggregation of partial and top-ranked lists in genomic studies, Statistics in Medicine, 37, 4266-4278.

  11. Chowdhury, M., Euhus, D., Banu, A., Umbricht, C., Biswas, S. and Choudhary, P. K. (2018) Validation of a Personalized Risk Prediction Model for Contralateral Breast Cancer, Breast Cancer Research and Treatment, 170, 415-423.

  12. Chowdhury, M., Euhus, D., O'Donnell, M., Onega, T., Choudhary, P. K. and Biswas, S. (2018) Dose-Dependent Effect of Mammographic Breast Density on the Risk of Contralateral Breast Cancer, Breast Cancer Research and Treatment, 170, 143-148.

  13. Rathnayake, L. N. and Choudhary, P. K. (2017) Semiparametric Modeling and Analysis of Longitudinal Method Comparison Data, Statistics in Medicine, 36, 2003-2015. R Code, Illustration

  14. Chowdhury, M., Euhus, D., Onega, T., Biswas, S. and Choudhary, P. K. (2017) A model for individualized risk prediction of contralateral breast cancer, Breast Cancer Research and Treatment, 161, 153-160. CBCRisk R Package, CBCRisk Web App

  15. Rathnayake, L. N. and Choudhary, P. K. (2016) Tolerance bands for functional data , Biometrics, 72, 503-512. R Code and Illustration

  16. Nawarathna, L. S. and Choudhary, P. K. (2015) A heteroscedastic measurement error model for method comparison data with replicate measurements , Statistics in Medicine, 34, 1242-1258.

  17. Burbano M., Wilson, T. G. Jr., Valderrama, P., Blansett, J., Wadhwani, C. P., Choudhary P. K., Rodriguez, L. C., and Rodrigues, D. C. (2015) Characterization of cement particles found in peri-implantitis-affected human biopsy specimens, International Journal of Oral & Maxillofacial Implants, 30, 1168-1173.

  18. Brulez, K., Choudhary, P. K., Maurer, G., Portugal, S. J., Boulton, R. L., Webber, S. L. and Cassey, P. (2014) Visual scoring of eggshell patterns has poor repeatability, Journal of Ornithology, 155, 701-706.

  19. Choudhary, P. K., Sengupta, D. and Cassey, P. (2014) A general skew-t mixed model that allows different degrees of freedom for random effects and error distributions, Journal of Statistical Planning and Inference, 147, 235-247.

  20. Nawarathna, L. S. and Choudhary, P. K. (2013) Measuring agreement in method comparison studies with heteroscedastic measurements, Statistics in Medicine, 32, 5156-5171.

  21. Yu, X., Baron, M. and Choudhary, P. K. (2013) Change-point detection in binomial thinning processes, with applications in epidemiology, Sequential Analysis, 32, 350-367.

  22. Assaad, H. and Choudhary, P. K. (2013) L-statistics for repeated measurements data with application to trimmed means, quantiles and tolerance intervals, Journal of Nonparametric Statistics, 25, 499-521.

  23. Shelor, C. P., Kirk, A. B., Dasgupta, P. K., Kroll, M., Campbell, C. A. and Choudhary, P. K. (2012) Breastfed Infants Metabolize Perchlorate, Environmental Science & Technology, 46 , 5151-5159.

  24. Kalra, IS, Alam, MM, Choudhary, PK, Pace, BS (2011) Kruppel-like Factor 4 activates HBG gene expression in primary erythroid cells, British Journal of Haematology, 154, 248-259.

  25. Chou, JL, Shenoy, DV, Thomas, N, Choudhary, PK, Laferla, FM, Goodman, SR, Breen, GA (2011) Early dysregulation of the mitochondrial proteome in a mouse model of Alzheimer's disease, Journal of Proteomics, 74, 466-479.

  26. Ghatpande, SS, Choudhary, PK, Quinn, CT, Goodman, SR (2010) In vivo pharmaco-proteomic analysis of hydroxyurea induced changes in the sickle red blood cell membrane proteome, Journal of Proteomics, 73, 619-626.

  27. Igic, B., Hauber, M. E., Galbraith, J. A., Grim, T., Dearborn, D. C., Brennan, P. L. R., Moskat, C., Choudhary, P. K. and Cassey, P. (2010) Comparison of micrometer- and scanning electron microscope-based measurements of avian eggshell thickness, Journal of Field Ornithology, 81, 402-410.

  28. Choudhary, P. K. (2010) A unified approach for nonparametric evaluation of agreement in method comparison studies . The International Journal of Biostatistics, 6, issue 1, article 19. Available at http://www.bepress.com/ijb/vol6/iss1/19

  29. Choudhary, P. K. and Yin, K. (2010) Bayesian and frequentist methodologies for analyzing method comparison studies with multiple methods . Statistics in Biopharmaceutical Research, 2, 122-132.

  30. Hryniewicz-Jankowska, A, Choudhary, PK, Ammann, LP, Quinn, CT, Goodman, SR (2009) Monocyte protein signatures of disease severity in sickle cell anemia, Experimental Biology and Medicine, 234, 210-221.

  31. Yin, K., Choudhary, P. K., Varghese, D. and Goodman, S. R. (2008) A Bayesian approach for sample size determination in method comparison studies. Statistics in Medicine, 27, 2273-2289. R Code

  32. Choudhary, P. K. (2008) A tolerance interval approach for assessment of agreement in method comparison studies with repeated measurements. J. of Statistical Planning and Inference, 138, 1102-1115.

  33. Ghatpande, S.S., Choudhary, P.K., Quinn, C.T. and Goodman, S.R (2008) Pharmaco-proteomic study of Hydroxyurea-induced modifications in the sickle red blood cell membrane proteome, Experimental Biology and Medicine, 233, 1510-1517.

  34. Choudhary, P. K. (2007) Semiparametric regression for assessing agreement using tolerance bands . Computational Statistics and Data Analysis, 51, 6229-6241.

  35. Choudhary, P. K. (2007) A tolerance interval approach for assessment of agreement with left censored data . J. of Biopharmaceutical Statistics, 17, 583-594.

  36. Choudhary, P. K. and Nagaraja, H. N. (2007) Tests for assessment of agreement using probability criteria, J. of Statistical Planning and Inference, 137, 279-290. R Code

  37. Hryniewicz-Jankowska, A, Choudhary, PK, Goodman, SR (2007) Variation in the monocyte proteome, Experimental Biology and Medicine, 232, 967-976.

  38. Choudhary, P. K. and Ng, H. K. T. (2006) Assessment of agreement under non-standard conditions using regression models for mean and variance, Biometrics, 62 , 288-296.

  39. Chou, J., Choudhary, P. K. and Goodman, S. R. (2006) Protein profiling of sickle cell versus control RBC core membrane skeletons by ICAT technology and tandem mass spectrometry, Cellular & Molecular Biology Letters, 11, 326-337.

  40. Svatek, R. S., Shulman, M., Choudhary, P. K., and Benaim, E. (2006) Critical analysis of prostate specific antigen doubling time calculation methodology, Cancer, 106, 1047-1053.

  41. Choudhary, P. K. and Nagaraja, H. N. (2005) A two-stage procedure for selection and assessment of agreement of the best instrument with a gold standard, Sequential Analysis, 24, 237-257. R Code

  42. Choudhary, P. K. and Nagaraja, H. N. (2005) Assessment of agreement using intersection-union principle , Biometrical J. , 47, 674-681.

  43. Choudhary, P. K. and Nagaraja, H. N. (2005) Selecting the instrument closest to a gold standard, J. of Statistical Planning and Inference, 129, 229-237.

  44. Nagaraja, H. N., Choudhary, P.  K. and Matalas, N. (2003) Number of records in a bivariate sample with application to Missouri river flood data, Methodology and Computing in Applied Probability, 4, 377-391.

  45. Misra, N., Choudhary, P.K., Dhariyal, I. and Kundu, D. (2002) Smooth estimators for estimating order restricted scale parameters of two gamma distributions, Metrika, 56, 143-161.

  46. Choudhary, P. K., Kundu, D. and Misra, N. (2001) Likelihood ratio test for simultaneous testing of mean and variance in normal distribution, J. of Statistical Computation and Simulation, 71, 313-333.

  47. In edited volumes

  48. Sengupta, D., Choudhary, P. K. and Cassey, P. (2015) Modeling and Analysis of Method Comparison Data with Skewness and Heavy Tails. In Ordered Data Analysis, Modeling and Health Research Methods, Choudhary, P. K., Nagaraja, C. H. and Ng, H. K. T. (Editors), Springer, New York, 169-187.

  49. Choudhary, P. K. (2009) Interrater agreement. In Methods and Applications of Statistics in the Life and Health Sciences, Balakrishnan, N. et al. (Editors), John Wiley, 461-480. This article also appears as an entry in the online version of Wiley's Encyclopedia of Statistical Sciences, second edition.

  50. Choudhary, P. K. and Nagaraja, H. N. (2004) Measuring agreement in method comparison studies - A review. In Advances in Ranking and Selection, Multiple Comparisons, and Reliability, Balakrishnan, N., Kannan, N. and Nagaraja, H. N. (Editors), Birkhauser, Boston, 215-244.


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10/19/2023