Data analysis
IBM SPSS version 25.0 for Windows was used for our analysis and we used
the Shapiro–Wilk test to evaluate the distribution of the data. Data
are presented as mean ± standard deviation (SD) or median (with
interquartile range) for normally distributed or skewed data,
respectively. Euler eclips diagrams were created with online software
based on an R package called eulerr (12). To test the accuracy of
symptoms in correlation to the anatomical location, ROC curves and the
areas under the curves were obtained for each anatomical location. We
considered a 2-tailed p-value of < 0.05 as statistically
significant. And for the ROC curve we considered an area under the curve
of ≥0.6 as a discriminating test (13).