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Table 3 Association between exposure to air pollution and stroke incidence (per 10 μg/m3 increment)

From: Association between exposure to ambient air pollution and hospital admission, incidence, and mortality of stroke: an updated systematic review and meta-analysis of more than 23 million participants

Air pollution

Incidence

Heterogeneity

NO.

OR (95% CI)

I2 (%)

P

PM2.5

18

1.048 (1.020, 1.076)

82.3

0.000

PM10

13

1.017 (0.981, 1.055)

51.9

0.010

SO2

4

1.002 (1.000, 1.003)

20.3

0.288

NO2

7

1.002 (1.000, 1.003)

0.0

0.512

CO

5

0.999 (0.997, 1.001)

0.0

0.763

O3

10

0.999 (0.999, 1.000)

34.1

0.135

  1. OR odds ratios, NO. number, PM2.5 particulate matter with aerodynamic diameter less than 2.5 μm, PM10 particulate matter with aerodynamic diameter less than 10 μm, SO2 sulfur dioxide, NO2 nitrogen dioxide, CO carbon monoxide, O3 ozone