Table 4 Probabilities of suffering a serious injury, depending on the use of seat belt and the different variables of the demographic factor. Processed by the Authors

 Men

178,839

2.22%

2.23%

13.08%

0.91%

 Women

76,837

2.10%

2.29%

12.57%

0.91%

 Unknown

2175

0.98%

1.23%

3.30%

0.74%

  < 25

29,865

2.19%

2.29%

15.41%

0.91%

 25–40

95,217

2.17%

2.24%

13.16%

0.91%

 41–60

96,189

2.17%

2.21%

11.64%

0.91%

  > 60

31,266

2.25%

2.33%

15.58%

0.92%

 Unknown

5314

1.77%

1.73%

13.16%

0.75%