Table 5

Absolute risk of repeat revascularisation in 12 months of follow up for risk subgroups

Patients undergoing elective surgery
Number of risk factors	Subgroup risk profile				Absolute risk (%)	95% CI	Proportion of patients
Number of risk factors	Calcification	Angulation >45°	Restenotic lesion	Triple vessel disease	Absolute risk (%)	95% CI	Proportion of patients
0 (A)					5.6	4.3 to 6.9	57.2%
1 (B)					8.4	6.9 to 10.1	31.6%
B1	No	Yes	No	No	7.7	5.4 to 10.2	17.7%
B2	No	No	No	Yes	7.7	4.9 to 10.7	6.3%
B3	Yes	No	No	No	10.5	7.2 to 14.1	6.1%
B4	No	No	Yes	No	11.1	5.8 to 16.8	1.5%
2 (C)					16.6	14.4 to 18.8	10.1%
C1	No	Yes	No	Yes	14.8	11.5 to 18.4	3.6%
C2	Yes	Yes	No	No	17.4	13.8 to 21.4	4.8%
C3	Yes	No	No	Yes	17.3	13.4 to 21.6	0.9%
C4	No	Yes	Yes	No	17.9	12.9 to 23.7	0.3%
C5	No	No	Yes	Yes	17.9	12.7 to 24.0	0.4%
C6	Yes	No	Yes	No	20.4	15.0 to 26.4	0.2%
3 or 4 (D)					24.6	21.5 to 27.9	1.1%
D1	Yes	Yes	No	Yes	23.7	19.6 to 28.1	0.8%
D2	No	Yes	Yes	Yes	24.2	18.9 to 30.1	0.1%
D3	Yes	Yes	Yes	No	26.5	21.2 to 32.4	0.2%
D4	Yes	No	Yes	Yes	26.5	21.0 to 32.5	0.0%
D5	Yes	Yes	Yes	Yes	32.2	26.7 to 38.0	0.1%

Patients undergoing non-elective surgery
	Subgroup risk profile		Absolute risk (%)	95% CI	Proportion of patients
	Vessel diameter <2 mm	Prior CABG	Absolute risk (%)	95% CI	Proportion of patients
CI, confidence interval.
0 (X)			9.9	6.9 to 10.8	91.0%
1 (Y)			22.2	15.5 to 29.6	8.9%
Y1	Yes	No	25.3	13.8 to 36.8	3.4%
Y2	No	Yes	20.3	11.2 to 29.4	5.5%
2 (Z)			40.4	29.4 to 51.9	0.1%