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Table 4 Incidence of perioperative adverse events after total ankle arthroplasty in each subgroup

From: Time trends and risk factors for perioperative complications in total ankle arthroplasty: retrospective analysis using a national database in Japan

 

Total

Perioperative adverse events

P-value

All

465

33 (7.1 %)

 

Age (year)

  

0.071

  ≤ 39

4

1 (25.0 %)

 

 40–49

6

1 (16.7 %)

 

 50–59

56

8 (14.3 %)

 

 60–69

152

12 (7.9 %)

 

 70–79

197

8 (4.1 %)

 

  ≥ 80

50

3 (6.0 %)

 

Sex

 Male

76

6 (7.9 %)

0.767

 Female

389

27 (6.9 %)

 

Body mass index

  < 30

333

22 (6.6 %)

0.857

  ≥ 30

26

3 (11.5 %)

 

 Missing

106

8 (7.5 %)

 

Smoking

 Nonsmoker

322

19 (6.0 %)

0.128

 Ex or current smoker

35

4 (11.4 %)

 

 Missing

75

10 (13.3 %)

 

Charlson Comorbidity Index

 0

423

26 (6.1 %)

0.001

  ≥ 1

42

7 (16.7 %)

 

Mean hospital volume (per year)

  ≤ 4

269

29 (10.8 %)

< 0.001

  ≥ 5

196

4 (2.0 %)

 

Underlying diagnosis

 Osteoarthritis

286

13 (4.5 %)

0.007

 Rheumatoid arthritis

179

20 (11.2 %)

 

Anesthesia time

  < 200 min

270

7 (2.6 %)

< 0.001

  ≥ 200 min

195

26 (13.3 %)

 
  1. The values in bold indicate significant differences at the 0.006 (=0.05/8) significance level