Table 4.

Association of the Number of Risk Factors and Mean Percent Atheroma Volume and Mean Percent Vessel Involvement

Risk Factors	N	Mean % Atheroma Volume	Mean % Vessel Involvement
0 – 1	13	15.6	7.6
2	9	17.9	23.6
3	22	23.9	22.4
4	18	26.6	33.6
5	16	31.0	46.4
6 – 7	14	30.4	55.8

Risk factors: Age group: ≤ 45 years = 0; 46–55 = 1; ≥ 56 = 2; Diabetes: no = 0, yes = 1; Family history CAD: no = 0, yes = 1; Hypertension: no = 0, yes = 1; Dyslipidemia: no = 0, yes = 1; BCP use: no = 1, yes = 0; HRT use: no = 0, yes = 1.

CAD indicates coronary artery disease; BCP, birth control pills; HRT, hormone replacement therapy.