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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 stroke

Hemorrhagic stroke

Lag 0

per 10 μg/m3

1.27 (0.42–2.12)

1.48 (− 0.07 - 3.05)

per IQR

2.75 (0.90–4.63)

3.22 (− 0.15 - 6.69)

Lag 1

per 10 μg/m3

0.93 (0.09–1.78)

1.55 (0.02–3.11)

per IQR

2.02 (0.19–3.88)

3.38 (0.04–6.82)

Lag 2

per 10 μg/m3

0.37 (− 0.45 - 1.21)

1.52 (0.02–3.04)

per IQR

0.81 (− 0.98 - 2.62)

3.30 (0.04–6.67)

Lag 3

per 10 μg/m3

0.48 (− 0.34 - 1.30)

0.92 (− 0.55 - 2.41)

per IQR

1.04 (− 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