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Table 4 Associations between ambient particulates and gases and TIA for all study subjects

From: Short-term effects of ambient particulates and gaseous pollutants on the incidence of transient ischaemic attack and minor stroke: a case-crossover study

 

Manchester

Liverpool

Lag (days)

Pollutant*

OR†

95% CI†

OR

95% CI

0

CO

0.95

0.84, 1.07

1.06

0.99, 1.12

0

PM10

0.93

0.81, 1.07

0.87

0.76, 0.98

0

NO

0.96

0.90, 1.02

1.04

0.99, 1.09

0

NO2

0.94

0.77, 1.14

1.10

0.91, 1.33

0

SO2

0.93

0.79, 1.08

0.93

0.79, 1.09

0

O3

1.15

0.94, 1.40

0.83

0.68, 1.01

1

CO

0.96

0.85, 1.08

1.02

0.96, 1.09

1

PM10

0.93

0.81, 1.06

1.07

0.95, 1.20

1

NO

0.97

0.92, 1.04

1.01

0.96, 1.06

1

NO2

1.01

0.84, 1.21

1.06

0.87, 1.28

1

SO2

0.95

0.82, 1.09

1.14

0.98, 1.32

1

O3

0.90

0.74, 1.10

1.06

0.87, 1.30

2

CO

0.98

0.87, 1.09

1.01

0.95, 1.08

2

PM10

0.95

0.84, 1.09

0.94

0.82, 1.06

2

NO

0.97

0.92, 1.03

1.03

0.98, 1.09

2

NO2

0.89

0.74, 1.08

0.95

0.79, 1.15

2

SO2

0.98

0.85, 1.13

1.03

0.88, 1.21

2

O3

1.06

0.87, 1.30

1.09

0.89, 1.33

3

CO

1.08

0.97, 1.19

0.95

0.88, 1.02

3

PM10

1.12

0.99, 1.27

0.95

0.83, 1.08

3

NO

1.06

1.01, 1.11

0.93

0.86, 1.00

3

NO2

1.12

0.93, 1.35

0.91

0.75, 1.11

3

SO2

1.03

0.89, 1.19

0.98

0.83, 1.17

3

O3

0.87

0.71, 1.07

1.17

0.95, 1.44

  1. * CO: carbon monoxide; PM 10: mass concentration of particles less than 10 μm in aerodynamic diameter; NO: nitric oxide; NO 2: nitrogen dioxide; SO 2: sulphur dioxide; O 3: ozone.
  2. † OR: odds ratio; CI: confidence interval.
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Environmental Health

ISSN: 1476-069X