Fig. 2

The interaction between group (cases and controls), serological results, antibiotic therapy, and tick bites
Upper left: Multiple linear regression on complete cases analyses of mental component summary (MCS) on group * tick-borne pathogens
Upper right: Multiple linear regression on complete cases analyses of depressive symptoms (HAD) on group * tick-borne pathogens
Lower left: Multiple linear regression on complete case analyses of PHQ-15 on group * antibiotic therapy
Lower right: Multiple linear regression on complete case analyses of PHQ-15 on group * tick bites
P-values are shown with ‘Never’ and ‘Pathogens not proven’ (IgG negative) as the reference categories