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Table 6 Proximity measures to major and minor industrial sources.

From: Spatiotemporal air pollution exposure assessment for a Canadian population-based lung cancer case-control study

Proximity Measure

# of People Exposeda

# of Years Exposed (Mean ± SD)

# of Facilities (Mean &#177 SD)

Emissionsb(tonnes) (Mean ± SD)

Major Industries

≤ 1 km

838

1.6 (5.3)

6.2 (5.5)

4.5e5 (3.6e7)

≤ 2 km

1995

4.3 (8.2)

13.3 (11.6)

4.5e5 (3.5e7)

≤ 3 km

2743

6.4 (9.5)

21.3 (18.6)

1.9e3 (1.6e4)

Minor Industries

≤ 1 km

4137

11.4 (11.2)

32.6 (59.3)

-

≤ 2 km

5515

16.7 (10.0)

115.7 (163.2)

-

≤ 3 km

5942

18.9 (9.0)

218.0 (303.8)

-

  1. a Number of individuals living > 1 year within 1/2/3 km of a major or minor industrial source
  2. b Summary of facility emissions > 0 tonnes. Only available for major industries
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Environmental Health

ISSN: 1476-069X