Figure 3 Distribution of the self-inflicted soft-tissue trauma 24 h after the appointment in laser group (635 nm and 808 nm) in comparison to control group (sham laser). The results were expressed in the number of cases (No of obs) and a percentage (%) of the total patients’ number per group, NS – not significant (P>0.05); NA – P value not available. The statistical analysis and graphs in this figure were produced using Statistica® Version 13.5.0 software for Windows (TIBCO Software, Inc., Palo Alto, CA) and PQStat 1.8.0.414 software (PQStat software; Poznań, Poland). No of obs – number of observations (number of patients); NS – not significant (P>0.05); NA – p-value not available (due to insufficient number of cases);% – percentage of cases; G1A – first appointment with 635-nm photobiomodulation; G2A – second appointment, after 10 days, sham – control group (without laser irradiation), G1B – first appointment with 808-nm laser photobiomodulation; G2B – second appointment, after 10 days, sham – control group (without laser irradiation).