Table 2 Comparison of the in-hospital mortality and postoperative complication rates between the RRS and non-RRS groups

In-hospital mortality

315 (0.3)

1252 (0.1)

< 0.001

90-day mortality

2093 (2.2)

6940 (0.8)

< 0.001

Postoperative complication

13,341 (14.3)

95,128 (11.3)

< 0.001

Cerebral infarction or hemorrhage

2790 (3.0)

9563 (1.1)

< 0.001

Acute coronary events

783 (0.8)

11,421 (1.4)

< 0.001

Heart failure

5666 (6.1)

31,807 (3.8)

< 0.001

Pulmonary embolism

1775 (1.9)

8401 (1.0)

< 0.001

Acute and subacute hepatic failure

22 (0.0)

353 (0.0)

0.007

Acute renal failure

1098 (1.2)

3476 (0.4)

< 0.001

Sepsis

884 (0.9)

5383 (0.6)

< 0.001

Wound infection

308 (0.3)

14,604 (1.7)

< 0.001

Pneumonia

2274 (2.4)

14,224 (1.7)

< 0.001

Urinary tract infection

1974 (2.1)

24,228 (2.9)

< 0.001