Table 1 Baseline characteristics - elective and emergency surgeries

Elective surgery

Group I

Group II (score = 1)

Group III (score = 2)

Group IV (score ≥ 3)

Overall

Total

0

768 (15)

2900 (57)

1426 (28)

5094 (28)

Demographics

 Age, [IQR], y

-

54.7 [45.2–62.8]

60.3 [49.1–70.1]

64.2 [54.6–71.8]

60.4 [50.0–69.7]

 Male gender (%)

-

458 (60)

1912 (66)

955 (67)

3325 (65)

Dialysis modality

 Haemodialysis (%)

-

0

1397 (48)

841 (59)

2238 (44)

 Peritoneal dialysis (%)

-

0

1029 (35)

450 (32)

1479 (29)

 Home haemodialysis (%)

-

0

173 (6)

51 (4)

224 (4)

 Kidney transplant (%)

-

768 (100)

301 (10)

84 (6)

1153 (23)

Comorbidities

 Ischaemic heart disease (%)

-

0

63 (2)

745 (52)

808 (16)

 Diabetes mellitus requiring insulin (%)

-

0

58 (2)

621 (44)

679 (13)

 Cerebrovascular disease (%)

-

0

17 (1)

141 (10)

158 (3)

 Heart failure/cardiomyopathy (%)

-

0

32 (1)

450 (32)

482 (10)

 MACE

7 (1)

59 (2)

87 (6)

153 (3)

Emergency surgery

Group I (score = 0)

Group II (score = 1)

Group III (score = 2)

Group IV (score ≥ 3)

Overall

Total

0

360 (11)

1688 (51)

1259 (38)

3307

Demographics

 Age, [IQR], year

-

52.4 [40.9–61.1]

59.5 [47.0–70.9]

63.6 [53.5–72.3]

60.2 [48.7–70.6]

 Male gender (%)

-

198 (55)

956 (57)

775 (62)

1929 (58)

Dialysis modality

 Haemodialysis (%)

-

-

773 (46)

703 (56)

1476 (45)

 Peritoneal dialysis (%)

-

-

588 (35)

445 (35)

1033 (31)

 Home haemodialysis (%)

-

-

97 (6)

46 (4)

143 (4)

 Kidney transplant (%)

-

360 (100)

230 (14)

65 (5)

655 (20)

Comorbidities

 Ischaemic heart disease (%)

-

0

42 (3)

670 (53)

712 (22)

 Diabetes mellitus requiring insulin (%)

-

0

76 (5)

469 (37)

545 (16)

 Cerebrovascular disease (%)

-

0

9 (1)

157 (12)

166 (5)

 Heart failure/cardiomyopathy (%)

-

0

29 (2)

515 (41)

544 (16)

 MACE

-

29 (8.1)

231 (13.7)

317 (25.2)

577 (17.4)