*2.1. Characteristics of the Studied Group*

Table 1 contains information on the frequency of reported individual symptoms and the average intensity of pain. Descriptive statistics for the entire group and separate statistics for the P1 and P2 subgroups are given. The statistical comparison of these two groups was abandoned due to the lack of occurrence of the studied variables in the P2 group.


**Table 1.** Characteristics of the study group in terms of experienced SS symptoms.

\* the number (*n*) and percentage (%) for the occurrence of symptoms \*\* mean (M) and standard deviation (SD) for pain intensity.

As shown in Table 1, the most common symptoms of SS disorders reported by the participants included headaches (68.0%), pain in the neck and shoulder girdle (58.0%), teeth clenching (50.0%) and acoustic symptoms in the temporomandibular joints (33.3%).
