Figure 3

Concentrations of 1,8-Cineol in ng/mL and ng/mg protein of the treatment group and control group shown as boxplots. Significant differences were calculated by Mann–Whitney-U test and results are shown as p values. Concentrations below LOQ were set to ½*LOQ. Samples from control patients who used 1,8-Cineol medications contrary to agreement and samples from the treatment group who did not use the 1,8-Cineol medication regularly, were excluded from statistical analysis.