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Table 1 Individual characteristics of the study cohort at the baseline and incidence of deep vein thrombosis (DVT) and pulmonary embolism (PE)

From: Long-term exposure to air pollution and risk of venous thromboembolism in a large administrative cohort

Variable

N

%

New DVT cases

New PE cases

P-Y

DVT Incidence rate*10,000

PE Incidence rate*10,000

Total

1,260,544

100

14,291

6,013

15,190,594

9.41

3.96

 Sex

 Males

574,177

45.5

6,674

2,649

6,808,369

9.80

3.89

 Females

686,367

54.5

8,247

3,364

8,382,225

9.84

4.01

Age

 < 35

123,825

9.8

563

117

1,626,949

3.46

0.72

 35–70

890,578

70.7

9,094

3,317

11,365,819

8.00

2.92

  > 70

246,141

19.5

5,264

2,579

2,197,826

23.95

11.73

Socio-economic position (area level)

 High

249,525

19.8

2,421

1,207

3,009,906

8.04

4.01

 Medium–High

256,930

20.4

2,748

1,220

3,082,163

8.92

3.96

 Medium

252,930

20.1

2,914

1,218

3,036,834

9.60

4.01

 Medium–Low

256,883

20.4

3,371

1,243

3,097,478

10.88

4.01

 Low

244,276

19.4

3,467

1,125

2,964,213

11.70

3.80

Educational level

 <  = primary school

313,258

24.9

6,160

2,506

3,400,437

18.12

7.37

 High-school

415,459

33.0

3,201

1,314

5,239,336

6.11

2.51

 Junior-school

326,960

25.9

4,128

1,489

3,976,175

10.38

3.74

 University

204,867

16.3

1,432

704

2,574,646

5.56

2.73

Marital status

 Married

836,296

66.3

9,537

3,695

10,320,350

9.24

3.58

 Separated

88,443

7.0

989

349

1,083,201

9.13

3.22

 Singles

192,469

15.3

1,502

600

2,390,028

6.28

2.51

 Widows

143,336

11.4

2,893

1,369

1,391,015

20.80

9.84