Table 4 Asthma and traffic at residential address

Self-report Heaviest road <50 m

0-1 cars/min

-

-

-

445

105 (23.6)

1.0

71(16.0)

1.0

< 2 cars/min

-

-

-

1512

339 (22.4)

1.10 (0.81-1.5)

216(14.4)

0.95 (0.66-1.4)

2-5 cars/min

-

-

-

410

113 (27.6)

1.17 (0.80-1.7)

81(19.9)

1.2 (0.76-1.8)

6-10 cars/min

-

-

-

203

56 (27.6)

1.20 (0.74-2.0)

34(17.0)

0.79 (0.42-1.5)

> 10 cars/min

-

-

-

258

76 (29.5)

1.5 (0.94-2.3)

48(18.5)

1.2 (0.72-2.1)

GIS Heaviest road <50 m

no heavy road

15584

1542 (9.9)

1.0

2100

494 (23.5)

1.0

316 (15.1)

1.0

< 2 cars/min

3691

375 (10.2)

1.0 (0.90-1.2)

472

121 (25.6)

1.2 (0.89-1.6)

79 (16.8)

1.1 (0.81-1.6)

2-5 cars/min

1555

159 (10.2)

0.95 (0.76-1.2)

216

61 (28.2)

1.2 (0.79-1.7)

39 (18.1)

1.1 (0.71-1.8)

6-10 cars/min

307

35 (11.4)

1.0 (0.65-1.6)

34

10 (29.4)

1.0 (0.33-3.2)

7(20.6)

1.4 (0.39-5.1)

> 10 cars/min

223

29 (13.0)

1.8 (1.1-2.8)

36

12 (33.3)

2.3 (0.99-5.2)

12 (33.3)

4.6 (2.0-10.6)

GIS Heaviest road <100 m

no heavy road

10875

1062 (9.8)

1.0

1461

330 (22.6)

1.0

215 (14.7)

1.0

< 2 cars/min

5741

589 (10.3)

1.1 (0.92-1.2)

744

197 (26.5)

1.4 (1.1-1.7)

128 (17.4)

1.2 (0.92-1.7)

2-5 cars/min

3309

327 (9.9)

0.96 (0.81-1.1)

462

121 (26.2)

1.2 (0.88-1.6)

75 (16.3)

1.1 (0.80-1.7)

6-10 cars/min

894

101 (11.3)

1.2 (0.92-1.6)

119

29 (24.4)

1.4 (0.82-2.3)

14 (11.8)

0.81 (0.38-1.7)

> 10 cars/min

541

61 (11.3)

1.3 (0.95-1.8)

72

21 (29.2)

1.6 (0.82-3.2)

21 (29.2)

2.7 (1.3-5.5)

GIS Heaviest road <250 m

no heavy road

4412

429 (9.7)

1.0

590

136 (23.1)

1.0

84 (14.2)

1.0

< 2 cars/min

7079

698 (9.9)

1.0 (0.86-1.2)

904

225 (24.9)

1.1 (0.85-1.5)

147 (16.4)

1.1 (0.7-1.5)

2-5 cars/min

6297

636 (10.1)

0.96 (0.82-1.1)

870

220 (25.3)

1.1 (0.83-1.5)

139 (16.1)

1.0 (0.7-1.4)

6-10 cars/min

2100

222 (10.6)

1.1 (0.86-1.3)

298

68 (22.8)

1.2 (0.77-1.7)

42 (14.1)

1.0 (0.6-1.9)

> 10 cars/min

1472

155 (10.5)

0.98 (0.76-1.3)

196

49 (25.0)

0.8 (0.51-1.4)

41 (20.7)

1.1 (0.6-1.9)

GIS NOx (μg/m³ ) (250 × 250 m)

0-8

11273

1111 (9.9)

1.0

1508

376 (24.9)

1.0

240 (16.0)

1.0

8-11

3133

300 (9.6)

0.94 (0.79-1.1)

371

78 (21.0)

0.79 (0.56-1.1)

45 (12.3)

1.0 (0.74-1.49)

11-14

2496

256 (10.3)

1.1 (0.93-1.3)

388

90 (23.2)

1.2 (0.86-1.6)

57 (14.8)

0.97 (0.68-1.39)

14-19

2319

229 (9.9)

0.84 (0.69-1.0)

298

77 (25.8)

1.0 (0.73-1.5)

55 (18.4)

0.99 (0.60-1.6)

> 19

2139

244 (11.4)

1.1 (0.93-1.4)

293

77 (26.3)

1.1 (077)

56 (19.1)

1.1 (0.60-1.9)