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Sujuan Gao

EDUCATION:

Beijing Normal University, Beijing, China, B.S. (Mathematics), 1985

University of Southampton, U.K., Ph.D. (Statistics), 1991

Indiana University School of Medicine, Division of Biostatistics, Post-doctoral Fellow, 1994

ACADEMIC APPOINTMENTS:

1995 -1996     Research Associate, Indiana University School of Medicine

1996 – 1998    Assistant Scientist, Indiana University School of Medicine

1998 - 2003    Assistant Professor, Indiana University School of Medicine

2003- 2008     Associate Professor, Indiana University School of Medicine

2008-present   Professor, Indiana University School of Medicine

SELECTED HONOR AND NATIONAL SERVICE:

1987-1991       Sino-British Friendship Scholarship

2003-2005       NIH expert panel member, The Cognitive and Emotional Health Project, NIH

2004-2007       Member, Epidemiology of Clinical Disorders and Aging study section, NIH

CONTACT INFORMATION

Sujuan Gao, Ph.D.

Department of Biostatistics

410 West 10th Street, Suite 3000

Indianapolis, IN 46202

Phone: (317) 274-0820

Email: sgao(at)iu.edu

My major research interest is in developing new statistical methods for the analysis of observational and clinical trial data. I have conducted research in statistical methods dealing with longitudinal data analyses with missing data, joint modeling of longitudinal and survival outcomes, and most recently, multivariate survival outcomes. 

I have been involved in research projects in Alzheimer’s Disease and aging. I have extensive experience working with a team of biostatisticians and data managers on various cohort and clinical studies. I am the Principal Investigator of two NIH funded projects, one on selenium level and cognitive decline conducted in China and another on secondary data analysis examining vascular profiles and their assciations with dementia risk.  I am the Core Leader for the Data Management and Statistics Core of the Indiana Alzheimer's Disease Center. I also collaborate with a group of researchers from the Indiana University Center for Aging Research.

Selected Publications:

  1. Gao S and Smith TMF.  On the nonexistence of a global nonnegative minimum bias invariant quadratic estimator of variance components.  Stat & Probability Letters 1995; 25:117-20.
  2. Zhou XH and Gao S.  Confidence intervals for the lognormal mean.   Statistics in Medicine 1997; 16:783-90.
  3. Gao S and Hui SL.  Logistic regression models with missing covariate values for complex survey data.  Statistics in Medicine 1997; 16:2419-28.
  4. Zhou XH, Gao S and Hui SL.  Methods for comparing means of two independent log-normal samples.  Biometrics 1997; 53:1129-35.
  5. Gao S and Zhou XH.  An empirical comparison of two semi-parametric approaches for modelling multivariate failure time data.  Statistics in Medicine 1997; 16:2049-62.
  6. Gao S, Hendrie HC, Hall KS and Hui SL.  The relationship between age, gender and the incidence of dementia and Alzheimer’s disease: A meta-analysis.  Arch Gen Psychiatry 1998; 55:809-15.
  7. Gao S and Smith TMF.  A constrained MINQU estimator of correlated response variance from unbalanced data in complex surveys.  Statistica Sinica 1998; 8(4): 1175-88.
  8. Zhou XH and Gao S.  One-sided confidence intervals for means of positively skewed distributions. American Statistician 2000; 54:100-104.
  9. Gao S and Hui SL.  Estimating the incidence of dementia from longitudinal two-phase sampling with nonignorable missing data. Statistics in Medicine 2000; 19:1545-1554.
  10. Emsley CL, Gao S, Hall KS and Hendrie HC.  Estimating odds ratios adjusting for misclassification in Alzheimer’s disease risk factor assessment. Statistics in Medicine 2000; 19:1523-1530.
  11. Hui SL and Gao S.  Spacing of follow-up waves in incidence studies. Statistics in Medicine 2000; 19:1567-1576.
  12. Gao S, Dolan N, Hall KS and Hendrie HC. The association of demographic factors and physical illness with personality change in a community sample of elderly non-demented African Americans. The American Journal of Geriatric Psychiatry 2000; 8(3):209-214.
  13. Gao S, Hui SL, Hall KS and Hendrie HC. Estimating disease prevalence from two phase surveys with nonresponse at the second phase. Statistics in Medicine 2000; 19:2101-2114.
  14. Zhou, X. H., Li, C., Gao, S., and Tierney, W. M. Methods for testing equality of means of health care costs in a paired design. Statistics in Medicine 2001; 20:1703-1720.
  15. Gao S. Estimation of interviewer effects on multivariate binary responses in a community based survey, Journal of Official Statistics 2001; 17:149-161.
  16. Harezlak J, Gao S, Hui SL. Illness-death stochastic model for longitudinal dementia data. Statistics in Medicine. 2003; 22:1465-1475.
  17. Shen J, Crane PK. Gao S. A Latent Variable Model Approach  for Assembling and Scoring Screening Tests for Dementia. Journal of Alzheimer’s Disease 2003;5:399-407.
  18. Gao S. A shared random effect parameter approach for longitudinal dementia data with non-ignorable missing data. Statistics in Medicine 2004; 23(2):211-220. PMCID: PMC2833292
  19. Li L, Huang J, Sun S, Shen J, Unverzagt FW, Gao S, Hendrie HC, Hall KS, Hui SL. Selecting pre-screening Items for early intervention trials of dementia – a case study. Statistics in Medicine 2004; 23(2):271-284.
  20. Gao, S. Combining Binomial Data Using Logistic Normal Model. Journal of Statistical Computation and Simulation 2004; 74(4):293-306. 
  21. Gao S, Jin Y,Hall KS, Liang C, Unverzagt FW, Ji R, Murrell JR, Cao J, Shen J, Ma F, Matesan J, Ying B, Cheng Y, Bian J, Li P, Hendrie HC. Selenium Level and Cognitive Function in Rural Elderly Chinese. American Journal of Epidemiology. 2007; 165(8):955-965.
  22. Gao S, Shen J. Asymptotic properties of a double penalized maximum likelihood estimator in logistic regression. Statistics and Probability Letters. 2007; 77(9): 925-930.
  23. Shen C, Gao S. A mixed-effects model for cognitive decline with non-monotone non-response from a two-phase longitudinal study of dementia. Statistics in Medicine 2007; 26:409-425.
  24. Shen J and Gao S. A solution to separation and multicollinearity in multiple logistic regression. Journal of Data Science. 2008; 6:515-531.
  25. Gao S, Jin Y, Unverzagt FW, Ma F, Hall KS, Murrell JR, Cheng Y, Shen J, Ying B, Ji R, Matesan J, Liang C, Hendrie HC. Trace element levels and cognitive function in rural elderly Chinese. Journal of GerontologyMedical Sciences, 2008; 63:635-641. (PMID: 18559640)
  26. Gao S, Thiebaut R. Mixed-effects models for longitudinal truncated outcomes with nonignorable missing. Journal of Data Science 2009; 7:13-25.
  27. Gao S, Jin Y, Unverzagt FW, Ma F, Hall KS, Murrell JR, Cheng Y, Shen J, Ying B, Ji R, Matesan J, Liang C, Hendrie HC. Hypertension and cognitive decline in a rural elderly Chinese cohort. JAGS 2009; 57:1051-7. (PMID: 19507297)  
  28. Gao S, Jin Y, Unverzagt FW, Ma F, Hall KS, Murrell JR, Cheng Y, Shen J, Ying B, Ji R, Matesan J, Liang C, Hendrie HC. Correlates of depressive symptoms in rural elderly Chinese. Int. J Geriatric Psychiatry 2009; 24(12):1358-66. PMCID: PMC2833291
  29. Gao S, Jin Y, Hall KS, Liang C, Unverzagt FW, Ma F, Cheng Y, Shen J, Cao J, Matesan J, Li P, Bian J, Hendrie HC,   Murrell JR. Selenium Level is Associated with Apolipoprotein e4 in Rural Elderly Chinese Public Health Nutrition 2009; 12: 2371-2376. (PMID: 19278567)
  30. Gao S, Nguyen JT, Hendrie HC, Unverzagt FW, Hake AM,  Smith-Gamble, Hall, KS. Accelerated weight loss and incident dementia in an elderly African American cohort. JAGS 2011; 59(1):18-25. PMID:21054328
  31. Yang L, Unverzagt FW, Jin Y, Hendrie HC, Liang C, Hall KS, Cao J,  Ma F, Murrell JR, Cheng Y, Li P, Bian J, Gao S. Normative Data for Neuropsychological Tests in an Elderly Chinese Cohort. The Clinical Neuropsychologist 2012; 26(1):641-53.
  32. Gao S, Jin Y, Unverzagt FW, Liang C, Hall KS, Cao J, Ma F, Murrell JR, Cheng Y, Li P, Bian J, Hendrie HC. Higher selenium level is associated with lower depressive symptoms. BMC Psychiatry 2012; 12:72.
  33. Yang L, Gao S. Bivariate change point models for longitudinal trajectories. Statistics in Medicine . 2013; 32(6):1038-53.
  34. Gao S, Hendrie HC, Yang L, Stump TE, Stewart JC, Kesterson J, Clark D, Callahan CM. Increase in blood pressure precedes clinical depression in elderly primary care patients. International Journal of Geriatric Psychiatry 2013; 28: 1099-1100.
  35. Gao S, Unverzagt FW, Hall KS, Lane KA, Murrell JR. Hake AM, Smith-Gamble V, Hendrie HC. Cognitive Impairment, Incidence, Progression, and Reversion: Findings from a Community-based Cohort of Elderly African Americans. American Journal of Geriatric Psychiatry Jul 2014;22(7):670-681.
  36. Gao S, Hendrie HC, Wang C, Stump TE, Stewart JC, Kesterson J, Clark D, Callahan CM. A redefined blood pressure variability and its association with all-cause mortality in elderly primary care patients. Hypertension Jul 2014;64(1):45-52.
  37. Gao S, Ogunniyi A, Hall KS, Baiyewu, O, Unverzagt FW, Lane KA, Murrell JR, Gureje O, Hake AM, Hendrie HC. Dementia incidence declined in African Americans, but not in Yoruba. Alzheimer's & Dementia 2016; 12(3):244-51.
  38. Yang L, Yu M, Gao S. Prediction of coronary artery disease based on multiple longitudinal biomarkers Statistics in Medicine 2016; 35(8):1299-314.
  39. Yang L, Yu M, Gao S. Joint models for multiple longitudinal processes and time-to-event outcome. Journal of Statistical Computation and Simulation (in press)
  40. Lai D, Xu H, Katz B, Koller D, Foroud T, Gao S. A multivariate finite mixture latent trajectory model with application to dementia studies. Journal of Applied Statistics (in press)

PBHL-B574 Applied Longitudinal Analysis

Spring Semester


Department of Biostatistics | 410 W. Tenth St., Suite 3000 | Indianapolis, IN 46202 | Ph: (317) 274-2661 | Fax: (317) 274-2678