Table 1 Baseline demographics of patients undergoing isolated CABG based on serum LDL level

Age (years)^b

9.7 \(\pm\) 67.1

9.5 \(\pm\) 67.9

9.7 \(\pm\) 67.5

9.6 \(\pm\) 67.1

9.9 \(\pm\) 66.7

 < 0.001

Male gender (%)^b

13689(73.4)

839(83.2)

2736(79.9)

4828(73.7)

5286(68.8)

 < 0.001

BMI (kg/\({\mathrm{m}}^{2})\) ^b

4.2 \(\pm\) 27.2

4.1 \(\pm\) 26.8

4.0 \(\pm\) 26.9

4.3 \(\pm\) 27.3

4.2 \(\pm\) 27.4

 < 0.001

EF (%)^b

9.1 \(\pm\) 46.1

9.1 \(\pm\) 45.6

9.3 \(\pm\) 45.4

9.1 \(\pm\) 45.8

9.1 \(\pm\) 46.6

 < 0.001

SBP (mmHg)^b

22.5 \(\pm\) 146.3

22 \(\pm\) 145.1

23.2 \(\pm\) 147.4

22.2 \(\pm\) 145.9

22.6 \(\pm\) 146.3

0.13

DBP (mmHg)^b

9.8 \(\pm\) 78.3

9.7 \(\pm\) 78.1

10.6 \(\pm\) 78.9

9.4 \(\pm\) 78.0

9.8 \(\pm\) 78.3

0.06

DM (%)

7442(39.9)

545(54.0)

1500(43.8)

2623(40.1)

2744(36.1)

 < 0.001

HTN (%)

10066(54.7)

581(57.6)

1884(55.0)

3577(54.6)

4024(52.4)

 < 0.001

CKD (%)

403(2.2)

43(4.3)

104(3.1)

135(2.1)

121(1.6)

 < 0.001

Family history (%)

6761(36.2)

342(32.1)

1223(35.7)

2350(35.9)

2864 (37.3)

0.008

COPD (%)

652(3.5)

35(3.5)

114(3.4)

243(3.7)

260(3.4)

0.69

CVA (%)

1252(6.8)

91(9.1)

254(7.5)

445(6.9)

462(6.1)

 < 0.001

Cigarette smoker (%)

3371(18.1)

168(16.7)

582(17.0)

1170(17.9)

1451(18.9)

 < 0.001

Opium user (%)

2056(11.0)

135(13.4)

400(11.7)

741(11.3)

780(10.2)

 < 0.001

Previous PCI (%)

825(4.4)

54(5.4)

159(4.7)

302(4.6)

310(4.1)

0.13

MI within 7 days (%)

1635(8.8)

54(5.4)

178(5.2)

509(7.8)

894(11.7)

 < 0.001

Off-pump surgery (%)

1558(8.7)

109(11.3)

347(10.3)

589(9.1)

513(7.2)

 < 0.001

Cross clamp time (min)^a

39(30–50)

40(31–49)

39(30–50)

39(30–49)

39(30–50)

0.044

Perfusion time (min)^a

67(55–84)

68(55–81)

66(54–82)

67(54–83)

68(55–85)

0.047

Intubation time (hr)^a

9.5(7.5–12.5)

9.5(7.4–12.5)

10.0(7.5–13.0)

10.0(7.5–12.5)

9.5(7.5–12.5)

0.02

Graft number (N)^a

3(3–4)

4(3–4)

3(3–4)

3(3–4)

3(3–4)

0.11

ICU time (hr)^a

29.0(23.0–65.5)

28.0(23.0–59.3)

27.5(23.0–53.5)

28.5(23.0–65.0)

39.0(23.0–67.0)

0.019