Figure 1.

Conditional effect of residential road traffic noise (L_Aeq) on noise annoyance depending on presence of depression symptoms. Note. Abbreviations: β − unstandardized linear regression coefficient for trend per 1 dB(A), p _int. – p-value from test of interaction between L_Aeq and depression. Statistically significant associations between L_Aeq and noise annoyance (β, P-value<0.05) are denoted by an asterisk (*). The model is adjusted for gender, age, nationality, income adequacy, population density, and university faculty.