Skip to main content

Table 2 Summary of matching variables

From: Residential traffic exposure and children's emergency department presentation for asthma: a spatial study

 

Cases

Controls

Total

 

N

%

n

%

n

%

All subjects

603

33

1206

66

1809

100

Gender

      

   Male

341

57

682

57

1023

57

   Female

262

43

524

43

786

43

Age strata

      

   0-4 years

224

37

448

37

672

37

   5-9 years

176

29

352

29

528

29

   10-14 years

112

19

224

19

336

19

   15-19 years

91

15

182

15

273

15

Season

      

   Summer

110

18

220

18

330

18

   Autumn

172

29

344

29

516

29

   Winter

192

32

384

32

576

32

   Spring

129

21

258

21

387

21

Back to article page

International Journal of Health Geographics

ISSN: 1476-072X