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Table 3 The percent change of stroke risk associated with 10 μg/m3 and per IQR increase of SO2 in different lag days and age group (single pollutant model)

From: Association of short-term exposure to sulfur dioxide and hospitalization for ischemic and hemorrhagic stroke in Guangzhou, China

Lag Day Ischemic strokeHemorrhagic stroke
< 65 years≥65 years< 65 years≥65 years
Lag 0per 10 μg/m31.39 (0.35–2.45)1.21 (0.02–2.42)1.55 (− 0.14 - 3.26)1.04 (− 2.04 - 4.23)
per IQR3.03 (0.75–5.36)2.64 (0.05–5.30)3.37 (− 0.29 - 7.18)2.27 (−4.36 - 9.35)
Lag 1per 10 μg/m31.31 (0.27–2.35)0.68 (− 0.50 - 1.88)1.47 (− 0.18 - 3.16)0.25 (− 2.79 - 3.40)
per IQR2.84 (0.59–5.14)1.48 (− 1.08 - 4.10)3.21 (− 0.39 - 6.93)0.55 (− 5.93 - 7.48)
Lag 2per 10 μg/m30.80 (− 0.22 - 1.82)0.03 (− 1.13 - 1.20)0.65 (− 0.97 - 2.30)2.31 (− 0.69 - 5.40)
per IQR1.73 (− 0.47 - 3.98)0.06 (− 2.43 - 2.61)1.41 (− 2.09 - 5.03)5.06 (− 1.48 - 12.03)
Lag 3per 10 μg/m30.82 (− 0.19 - 1.83)0.24 (− 0.91 - 1.40)1.18 (− 0.42 - 2.81)− 0.57 (− 3.49 - 2.44)
per IQR1.77 (− 0.4 - 3.99)0.51 (− 1.95 - 3.04)2.57 (− 0.90 - 6.16)− 1.23 (− 7.39 - 5.33)
  1. Abbreviations: IQR interquartile increase; NO2 nitrogen dioxide; O3 ozone; PM10 particulate matter with aerodynamic diameter less than 10 μm; PM2.5 particulate matter with aerodynamic diameter less than 2.5 μm; SO2 sulfur dioxide
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