Table 2 Occurrence of cardiovascular events during 10-year follow-up, according to categories of coronary artery calcium score

0 (n = 174)

Proportion with event

5/174 (2.9%)

0

5/174 (2.9%)

0

0

Rate per 1,000 person-years

2.96

0

2.96

0

0

Hazard ratio*

1 (ref.)

1–100 (n = 229)

Proportion with event

19/229 (8.3%)

8/229 (3.5%)

6/229 (2.6%)

6/229 (2.6%)

13/229 (5.7%)

Rate per 1,000 person-years

8.83

3.66

2.76

2.72

5.95

Unadjusted hazard ratio

3.00 (1.12–8.04)

p = 0.029

Adjusted hazard ratio

2.92 (1.06–7.86)

p = 0.033

101–300 (n = 131)

Proportion with event

23/131 (17.6%)

6/131 (4.6%)

12/131 (9.2%)

9/131 (6.9%)

14/131 (10.7%)

Rate per 1,000 person-years

19.74

4.94

10.07

7.23

11.53

Unadjusted hazard ratio

6.78 (2.58–17.83)

p < 0.001

Adjusted hazard ratio

6.53 (2.47–17.29)

p < 0.001

 > 300 (n = 201)

Proportion with event

43/201 (21.4%)

22/201 (10.9%)

13/201 (6.5%)

19/201 (9.5%)

35/201 (17.4%)

Rate per 1,000 person-years

24.94

12.45

7.25

10.30

19.81

Unadjusted hazard ratio

8.68 (3.44–21.90)

p  < 0.001

Adjusted hazard ratio

8.30 (3.28–21.00)

p < 0.001