Sentence examples for all statistical calculations were done using from inspiring English sources

All statistical calculations were done using computer programs SPSS (Statistical Package for the Social Science; SPSS Inc., Chicago, IL, USA) version 17 for Microsoft Windows.

All statistical calculations were done using computer programs: Microsoft Excel version 7 (Microsoft Corporation, NY, USA) and SPSS version 20 (Statistical Package for the Social Science SPSS Inc.., Chicago, IL, USA) statistical program for Microsoft Windows.

All statistical calculations were done using SAS software, version 9.3.

All statistical calculations were done using SAS 9.3.

All statistical calculations were done using SPSS 15.0.

All statistical calculations were done using SAS statistical software, Version 9.1 (SAS Institute, Cary, NC, USA).

Statistical calculations were done using descriptive statistics.

Statistical calculations were done using IBM SPSS Statistics 20 (IBM Corp., Armonk, NY, USA).

Statistical calculations were done using EPIINFO 7.0; if not specified otherwise, P-values were calculated by Fishers Exact tests.

Statistical calculations were done using SPSS.

5 6 16 17 Statistical calculations were done using SAS version 9.1 software.