Table 1.

The mediation effect of PM_2.5 concentration on longevity via potential mediators.

Mediator	Longevity	Total effect β (95% CI)	Direct effect A β (95% CI)	Direct effect B β (95% CI)	Mediation effect β (95% CI)	P value	Mediated proportion (%)
DBP	90th	−0.57 (−2.12 to 0.97)	−2.65 (−3.97 to -1.32)	-0.068 (−0.082 to −0.054)	0.18 (0.083 to 0.28)	0.00029	31.48 (14.44 to 48.51)
DBP	99th	−1.13 (−3.55 to 1.28)	−2.65 (−3.97 to −1.32)	−0.077 (−0.099 to −0.056)	0.21 (0.088 to 0.32)	0.00060	28.42 (7.76 to 18.09)
Hypertension	90th	−0.57 (−2.12 to 0.97)	0.081 (0.016 to 0.15)	−5.01 (−6.09 to −3.92)	−0.41(−0.74 to −0.070)	0.018	70.86 (12.23 to 100)
Hypertension	99th	−1.13 (−3.55 to 1.28)	0.081 (0.016 to 0.15)	−5.70 (−7.52 to −3.87)	−0.46 (−0.86 to −0.065)	0.023	40.86 (5.70 to 76.02)
Hypercholesterolaemia	90th	−0.57 (−2.12 to 0.97)	0.072 (0.0070 to 0.14)	−9.61 (−12.95 to −6.27)	−0.69 (−1.36 to −0.023)	0.043	100 (3.92 to 100)
Hypercholesterolaemia	99th	−1.13 (−3.55 to 1.28)	0.072 (0.0070 to 0.14)	−13.13 (−18.87 to −7.38)	−0.94 (−1.89 to 0.0029)	0.051	83.18 (0 to 100)
Angina pectoris	90th	−0.57 (−2.12 to 0.97)	0.045 (0.011 to 0.078)	−0.36 (−0.50 to −0.21)	−0.014 (−0.026 to −0.0022)	0.020	2.45 (0. 39 to 4.50)
Angina pectoris	99th	−1.13 (−3.55 to 1.28)	0.045 (0.011 to 0.078)	−0.39 (−0.58 to −0.20)	−0.017 (−0.033 to −0.0020)	0.026	1.53 (0. 18 to 2.88)
Hypothyroidism	90th	−0.57 (−2.12 to 0.97)	0.092 (0.060 to 0.13)	−3.69 (−7.27 to −0.11)	−0.34 (−0.69 to 0.011)	0.058	59.37 (0 to 100)
Hypothyroidism	99th	−1.13 (−3.55 to 1.28)	0.092 (0.060 to 0.13)	−1.48 (−7.23 to 4.27)	−0.14 (−0.67 to 0.40)	0.62	12.05 (0 to 59.16)
AD	90th	−0.57 (−2.12 to 0.97)	0.48 (0.014 to 0.96)	−0.29 (−0.36 to −0.22)	−0.14 (−0.28 to −0.00016)	0.05	24.65 (0 to 49.27)
AD	99th	−1.13 (−3.55 to 1.28)	0.48 (0.014 to 0.96)	−0.39 (−0.50 to −0.28)	−0.19 (−0.38 to 0.0026)	0.053	16.61 (0 to 33.46)