Fig. 6: Mental health risks associated with composite environmental exposures in the past 14 days.

a Evaluation of health risk trends associated with nine different composite exposure scenarios compared with the baseline group (0_0 means low PM-suitable temperature; 0_1 means low PM-increasing DAT and IDC, or low PM-cooling IDF; 1_0 means high PM-suitable temperature; 1_1 means high PM-increasing DAT and IDC, or high PM- cooling IDF; 0_2 means low PM-warming IDF; and 1_2 means high PM-warming IDF, b quantifying the contribution of interactive effects to overall risk by AP, where positive means REOI > 0, AP > 0, and S > 1, negative means REOI < 0, AP < 0, and S < 1, none means no compound effect, NA means no significant difference between groups, c examination of the path relationships between 14-day cumulative PM, DAT, IDC, and IDF, where AR means daily mental distress-related absence rate, SRMR = 0.079, CFI = 0.924, TLI = 0.855, NFI = 0.924.