Table 2 Association of risk factors and comorbidities with all-type, mechanical, and complications due to infections after total joint arthroplasty (TJA)

 Age

1.00 (0.98–1.02)

0.99

0.99 (0.97–1.02)

0.49

1.00 (0.97–1.03)

0.98

 Gender (female)

0.94 (0.63–1.40)

0.75

0.85 (0.46–1.57)

0.61

1.30 (0.65–2.60)

0.46

 Smoking

1.29 (0.85–1.97)

0.23

1.14 (0.51–2.56)

0.75

1.64 (0.72–3.74)

0.24

 Alcohol

1.22 (0.74–2.02)

0.44

1.39 (0.54–3.55)

0.50

0.84 (0.25–2.85)

0.78

 Corticosteroids

2.14 (1.16–3.92)

0.01

1.68 (0.60–4.75)

0.33

3.16 (1.39–7.22)

0.006

 Diabetes

1.42 (0.93–2.15)

0.10

1.10 (0.56–2.16)

0.79

2.32 (1.18–4.57)

0.02

 Obesity

1.15 (0.56–2.34)

0.70

1.72 (0.87–3.39)

0.12

1.58 (0.72–3.47)

0.26

 Respiratory

2.35 (1.39–3.97)

0.001

0.94 (0.29–3.12)

0.94

4.55 (2.03–10.2)

< 0.001

 Anemia

2.46 (1.07–5.70)

0.04

NA

NA

4.93 (1.90–12.8)

0.001

 Osteoporosis

1.34 (0.85–2.12)

0.21

1.83 (0.94–3.56)

0.08

1.08 (0.50–2.35)

0.84

 Infectious

1.91 (1.13–3.23)

0.02

1.51 (0.64–3.60)

0.35

3.09 (1.50–6.40)

0.002

 Musculoskeletal

1.42 (0.92–2.18)

0.12

2.11 (1.13–3.96)

0.02

1.15 (0.56–2.37)

0.71

 Hernia (all-type)

1.84 (0.98–3.44)

0.06

3.93 (1.77–8.72)

0.001

NA

NA

 Mental

2.16 (1.24–3.75)

0.03

1.14 (0.35–3.72)

0.83

2.50 (1.09–5.70)

0.05

 Gastrointestinal

1.12 (0.52–2.42)

0.78

1.18 (0.36–3.84)

0.79

0.87 (0.27–2.83)

0.82

 Cancer

0.74 (0.24–2.35)

0.62

0.59 (0.08–4.30)

0.60

1.33 (0.32–5.60)

0.70

 Cardiovascular

1.12 (0.69–1.80)

0.65

0.90 (0.41–1.97)

0.79

1.02 (0.47–2.24)

0.96

 Others

1.89 (1.23–3.90)

0.004

1.99 (1.03–3.85)

0.04

1.65 (0.82–3.34)

0.16

 TKA

0.93 (0.62–1.40)

0.73

0.41 (0.19–0.87)

0.02

2.18 (1.11–4.29)

0.02

 RA

3.81 (2.30–6.31)

< 0.001

3.25 (1.46–7.25)

0.004

5.98 (2.93–12.2)

< 0.001