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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