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.