Sentence examples for all analyses were preformed using from inspiring English sources

All analyses were preformed using SAS® 9.1 and SigmaStat® 3.1.

All analyses were preformed using SPSS version 15 software (SPSS Inc. Chicago. IL, USA).

All statistical analyses were preformed using the program, SPSS (Statistical Program for Social Sciences SPSS Inc , USA).

All statistical analyses were preformed using SAS version 9.1 (Cary, NC) and STATA 9.2 (College Station, Texas).

Analyses were preformed using Stata v8.2.

Analyses were preformed using the SAS statistical analysis package for personal computers (version 6.12, Cary, NC).

Statistical analyses were preformed using Student's t-test or ANOVA, followed by the Bonferronni post hoc test, using SPSS 16.0 (IBM, Hampshire, UK).

The analyses are preformed using the statistical software Stata version 11.0.

All statistical tests were preformed using the statistics toolbox for MATLAB® R2009a (MathWorks, Natick, Massachusetts, USA).

All statistical manipulations were preformed using STATA (Version 7, Stata Corp. TX77840, USA).

All statistical calculations were preformed using the PASW v. 18.0 for MAC (SPSS, Chicago, IL, USA).