Chang-Xing Ma

Associate Professor Department of Biostatistics University at Buffalo Kimball rm716 Buffalo, NY 14214 PHONE: (716) 829-2758 FAX: (716) 829-2200 E-MAIL: cxma@buffalo.edu

■ PROFILE

■ TEXTBOOKS

• R. Wu, C.X. Ma, G Casella. Statistical Genomics of Complex Traits: Linkage, Disequilibrium and QTL. Springer New York, 2007
• K.T. Fang and C.X. Ma, Uniform and Orthogonal Designs (in Chinese), Science Press, September 2001, Beijing.

■ ONLINE TOOLS

• Common risk difference test and interval estimation of risk difference for stratified bilateral correlated data
• Testing homogeneity of difference of two proportions for stratified correlated paired binary data
• HOMOGENEITY TEST FOR CORRELATED DATA IN OPHTHALMOLOGIC STUDIES (R model)
• Testing the Equality of Proportions for Combined Unilateral and Bilateral Data Under R model
• HOMOGENEITY TEST FOR CORRELATED DATA IN OPHTHALMOLOGIC STUDIES (equal correlation model)
• Testing the Equality of Proportions for Combined Unilateral and Bilateral Data Under Equal Inter-class correlation model
• Homogeneity Test of Prevalence and Sample Size Calculation Under Dallal's Model

• Asymptotic Confidence Interval Construction for Proportion Ratio based on Correlated Paired Data
• Simultaneous Confidence Interval Construction for Many-to-One Comparisons of Proportion Differences Based on Correlated Paired Data
• Confidence intervals for difference of proportions from correlated bilateral data in ophthalmological studies
• Asymptotic Confidence Interval Construction for Proportion Ratio based on Correlated Paired Data
• Many-to-one Confidence Intervals of Risk Ratios for Bilateral and Unilateral Correlated Data (Dalla model)
• Homogeneity Tests and Interval Estimations of Risk Differences for Stratified Bilateral and Unilateral Correlated Data (Dalla model)

• The Human Hepatic Cytochrome P450 Expression Calculator
• Bedside scoring tool to determine RTX-responsiveness 4 hours after initiation of therapy in children with acute respiratory failure
• Compute Representative Points
• Search for Uniform Designs
• Isomorphism Check for two designs
• Searching for Nearly Orthogonal Array
• Sample Size Calculator for Barnard designs in clinical trial, two samples, two stages
• Post hoc test after a chi-squared test
• Lean Designs

■ SAS MACROS

• GENMOD: FORWARD, BACKWARD, STEPWISE
• LOGISTIC REGRESSION: FORWARD, BACKWARD, STEPWISE
• Logistic regression forword selection with MACRO

■ STATISTICAL JOURNAL

• https://www.maxapress.com/stati