Table 4. Pooled effect estimates (mean and 95% PIs) for the increase in mortality associated with an increase of 10 μg/m³ in PM₁₀, 10 ppb in O₃, 1 ppb in SO₂ in three seasons in 18 Thailand provinces during 1999–2008, with single-pollutant model.

		% increase (PIs)
Pollutant	Season	Non–accidental	Cardiovascular	Respiratory
PM10	Summer	0.51 (0.28, 0.74)	0.54 (0.03, 1.05)	0.58 (−0.05, 1.20)
	Rainy	0.20 (−0.09, 0.48)	−0.51 (−1.4, 0.38)	0.24 (−0.56, 1.04)
	Winter	0.35 (0.05, 0.65)	−0.02 (−0.56, 0.51)	0.33 (−0.12, 0.78)
O3	Summer	0.52 (−0.15, 1.20)	1.92 (0.39, 3.45)	1.52 (−0.34, 3.38)
	Rainy	0.37 (−0.73, 1.46)	0.37 (−2.10, 2.84)	1.21 (−2.98, 5.40)
	Winter	1.23 (0.27, 2.19)	1.56 (−0.11, 3.24)	0.79 (−1.96, 3.55)
SO2	Summer	0.32 (0.02, 0.62)	0.71 (0.007, 1.40)	0.48 (−0.33, 1.30)
	Rainy	0.08 (−0.25, 0.41)	0.15 (−0.60, 0.91)	0.22 (−0.94, 1.38)
	Winter	0.57 (0.31, 0.84)	0.31 (−0.048, 0.87)	0.72 (−0.14, 1.58)