Table 3. Percentage change in daily hospital visits for cardiovascular diseases (CVD) by 10-µg/m³ increase in PM₁₀ or O₃ .

Number of Patients (NPT)	Day	PM10		O3
		NPT change %	95% CI	NPT change %	95% CI
Total CVD; I00–I99	Concurrent	0.01	−0.05 to 0.07	−0.01	−0.23 to 0.20
33 458	Previous day	0.05	−0.01 to 0.11	0.23	0.02 to 0.44
	2 Cumulative*	0.03	−0.03 to 0.10	0.17	−0.06 to 0.40
	3 Cumulative†	0.04	−0.01 to 0.09	0.10	−0.15 to 0.35
-age < 15 year	Concurrent	−0.27	−0.76 to 0.19	−0.49	−2.05 to 1.07
681	Previous day	−0.15	−0.64 to 0.34	−1.06	−2.66 to 0.54
	2 Cumulative	−0.24	−0.76 to 0.28	−1.00	−2.80 to 0.80
	3 Cumulative	−0.09	−0.63 to 0.44	−0.82	−2.74 to 1.10
-age 15–64 year	Concurrent	−0.02	−0.12 to 0.07	−0.16	−0.47 to 0.15
16 710	Previous day	0.01	−0.08 to 0.10	0.01	−0.28 to 0.14
	2 Cumulative	−0.01	−0.10 to 0.09	−0.08	−0.43 to 0.26
	3 Cumulative	0.00	−0.09 to 0.10	−0.10	−0.47 to 0.27
-age ≥ 65 year	Concurrent	0.06	−0.03 to 0.16	0.15	−0.16 to 0.46
16 067	Previous day	0.10	0.03 to 0.19	0.50	0.19 to 0.81
	2 Cumulative	0.09	0.00 to 0.20	0.48	0.13 to 0.83
	3 Cumulative	0.08	−0.01 to 0.18	0.36	−0.01 to 0.73
Arrhythmia, I46–I49	Concurrent	−0.01	−0.30 to 0.29	−0.26	−1.24 to 0.72
1557	Previous day	−0.08	−0.37 to 0.21	−0.06	−1.00 to 0.88
	2 Cumulative	−0.05	−0.36 to 0.26	−0.20	−1.27 to 0.87
	3 Cumulative	−0.02	−0.34 to 0.29	−0.28	−1.43 to 0.87
Myocardial Infarction	Concurrent	0.12	−0.11 to 0.36	−0.30	−1.08 to 0.48
MI, I21	Previous day	0.00	−0.24 to 0.24	−0.68	−1.48 to 0.12
2566	2 Cumulative	0.06	−0.18 to 0.32	−0.68	−1.58 to 0.22
	3 Cumulative	−0.02	−0.27 to 0.22	−0.97	−1.95 to 0.01
Ischemic Heart Disease	Concurrent	0.02	−0.10 to 0.14	−0.30	−0.69 to 0.09
IHD, I20–I25	Previous day	0.07	−0.04 to 0.19	0.27	−0.12 to 0.66
10 158	2 Cumulative	0.05	−0.07 to 0.18	0.00	−0.45 to 0.45
	3 Cumulative	0.09	−0.01 to 0.20	−0.08	−0.57 to 0.41

*2cumulative = (lag0 + lag1)/2

^†3cumulative = (lag0 + lag1 + lag2)/3