Statistical Analysis
These cases were examined in terms of age, gender, native thiol, total thiol, disulphide, disulphide/native thiol, disulphide/total thiol, native thiol/total thiol levels. Statistical analysis was completed using IBM SPSS 25.0 (SPSS for Windows, SPSS Inc., Chicago, IL, USA). The Shapiro-Wilk test was used for normality testing of native thiol, total thiol, disulphide level, disulphide/native thiol, disulphide/total thiol and native thiol/total thiol ratios. Independet simple T test was used in our data suitable for normal distribution, and Mann Whitney U test was used in our non-normally distributed data. Crosstabs and frequency tests were used for demographic data and frequency analysis of variables P <.05 was accepted as statistically significant.