The TTEST Procedure |

Best, D. I. and Rayner, C. W. (1987), "Welch’s Approximate Solution for the Behren’s-Fisher Problem,"

*Technometrics*, 29, 205–210.Chow, S. and Liu, J. (2000),

*Design and Analysis of Bioavailability and Bioequivalence Studies*, Second Edition, New York: Marcel Dekker.Cochran, W. G. and Cox, G. M. (1950),

*Experimental Designs*, New York: John Wiley & Sons.Dilba, G., Schaarschmidt, F., and Hothorn, L. A. (2006),

*mratios: A Package for Inference about Ratios of Normal Means,*UseR! Conference.Diletti, D., Hauschke, D., and Steinijans, V. W. (1991), "Sample Size Determination for Bioequivalence Assessment by Means of Confidence Intervals,"

*International Journal of Clinical Pharmacology, Therapy and Toxicology*, 29, 1–8.Fieller, E. C. (1954), "Some Problems in Interval Estimation,"

*Journal of the Royal Statistical Society Series B*, 16, 175–185.Hauschke, D., Kieser, M., Diletti, E., and Burke, M. (1999), "Sample Size Determination for Proving Equivalence Based on the Ratio of Two Means for Normally Distributed Data,"

*Statistics in Medicine*, 18, 93–105.Huntsberger, David V. and Billingsley, Patrick P. (1989),

*Elements of Statistical Inference*, Dubuque, IA: Wm. C. Brown.Johnson, N. L. Kotz, S. and Balakrishnan, N. (1994),

*Continuous Univariate Distributions, Volume 1*, Second Edition, New York: John Wiley & Sons.Jones, B. and Kenward, M. G. (2003),

*Design and Analysis of Cross-Over Trials*, Second Edition, Washington, DC: Chapman & Hall/CRC.Lee, A. F. S. and Gurland, J. (1975), "Size and Power of Tests for Equality of Means of Two Normal Populations with Unequal Variances,"

*Journal of the American Statistical Association*, 70, 933–941.Lehmann, E. L. (1986),

*Testing Statistical Hypostheses*, New York: John Wiley & Sons.Moore, David S. (1995),

*The Basic Practice of Statistics*, New York: W. H. Freeman.Phillips, K. F. (1990), "Power of the Two One-Sided Tests Procedure in Bioequivalence,"

*Journal of Pharmacokinetics and Biopharmaceutics*, 18, 137–144.Posten, H. O., Yeh, Y. Y., and Owen, D. B. (1982), "Robustness of the Two-Sample Test under Violations of the Homogeneity of Variance Assumption,"

*Communications in Statistics*, 11, 109–126.Ramsey, P. H. (1980), "Exact Type I Error Rates for Robustness of Student’s Test with Unequal Variances,"

*Journal of Educational Statistics*, 5, 337–349.Robinson, G. K. (1976), "Properties of Student’s and of the Behrens-Fisher Solution to the Two Mean Problem,"

*Annals of Statistics*, 4, 963–971.SAS Institute Inc. (1986),

*SUGI Supplemental Library User’s Guide, Version 5 Edition*, Cary, NC: SAS Institute Inc.Sasabuchi, S. (1988a), "A Multivariate Test with Composite Hypotheses Determined by Linear Inequalities When the Covariance Matrix Has an Unknown Scale Factor,"

*Memoirs of the Faculty of Science, Kyushu University, Series A*, 42, 9–19.Sasabuchi, S. (1988b), "A Multivariate Test with Composite Hypotheses When the Covariance Matrix Is Completely Unknown,"

*Memoirs of the Faculty of Science, Kyushu University, Series A*, 42, 37–46.Satterthwaite, F. W. (1946), "An Approximate Distribution of Estimates of Variance Components,"

*Biometrics Bulletin*, 2, 110–114.Scheffe, H. (1970), "Practical Solutions of the Behrens-Fisher Problem,"

*Journal of the American Statistical Association*, 65, 1501–1508.Schuirmann, D. J. (1987), "A Comparison of the Two One-Sided Tests Procedure and the Power Approach for Assessing the Equivalence of Average Bioavailability,"

*Journal of Pharmacokinetics and Biopharmaceutics*, 15, 657–680.Senn, S. (2002),

*Cross-over Trials in Clinical Research*, Second Edition, New York: John Wiley & Sons.Steel, R. G. D. and Torrie, J. H. (1980),

*Principles and Procedures of Statistics*, Second Edition, New York: McGraw-Hill.Tamhane, A. C. and Logan, B. R. (2004), "Finding the Maximum Safe Dose Level for Heteroscedastic Data,"

*Journal of Biopharmaceutical Statistics*, 14, 843–856.Wang, Y. Y. (1971), "Probabilities of the Type I Error of the Welch Tests for the Behren’s-Fisher Problem,"

*Journal of the American Statistical Association*, 66, 605–608.Wellek, S. (2003),

*Testing Statistical Hypotheses of Equivalence*, Boca Raton, FL: Chapman & Hall/CRC Press LLC.Yuen, K. K. (1974), "The Two-Sample Trimmed for Unequal Population Variances,"

*Biometrika*, 61, 165–170.

Copyright © SAS Institute, Inc. All Rights Reserved.