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Table 2 The percent change of stroke risk associated with 10 μg/m3 and per IQR increase of SO2 in different lag days in 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
Lag 0per 10 μg/m31.27 (0.42–2.12)1.48 (− 0.07 - 3.05)
per IQR2.75 (0.90–4.63)3.22 (− 0.15 - 6.69)
Lag 1per 10 μg/m30.93 (0.09–1.78)1.55 (0.02–3.11)
per IQR2.02 (0.19–3.88)3.38 (0.04–6.82)
Lag 2per 10 μg/m30.37 (− 0.45 - 1.21)1.52 (0.02–3.04)
per IQR0.81 (− 0.98 - 2.62)3.30 (0.04–6.67)
Lag 3per 10 μg/m30.48 (− 0.34 - 1.30)0.92 (− 0.55 - 2.41)
per IQR1.04 (− 0.73 - 2.83)1.99 (− 1.19 - 5.27)
  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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