Table 3.

Percentage increase in IHD hospitalizations (95% CI) associated with a 10 μg/m³ increase in PM_2.5 and PM₁₀ concentrations at lag 0 by gender and age groups.

Group	All Seasons		Cold Season (November–April)
	PM2.5	PM10	PM2.5	PM10
All	0.25 (0.10, 0.39) *	0.57 (0.46, 0.68) *	0.35 (0.19, 0.52) *	0.33 (0.19, 0.47) *
Gender
Male	0.34 (0.14, 0.55) *	0.39 (0.21, 0.56) *	0.36 (0.12, 0.60) *	0.32 (0.12, 0.52) *
Female	0.29 (0.11, 0.48) *	0.28 (0.11, 0.45) *	0.35 (0.11, 0.58) *	0.35 (0.16, 0.55) *
Age (years)
41–65	0.82 (0.52, 1.12) *	0.77 (0.52, 1.02) *	0.83 (0.49, 1.20) *	0.66 (0.37, 0.95) *
66–85	0.30 (0.11, 0.50) *	0.31 (0.14, 0.48) *	0.34 (0.10, 0.57) *	0.31 (0.12, 0.51) *
>85	−0.31 (−0.60, −0.02)	−0.03 (−0.27, 0.22)	−0.04 (−0.38, 0.29)	0.1 (−0.18, 0.38)

* p < 0.05.