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Table 1 Basic characteristics of the patients with total joint arthroplasty (TJA) with prosthetic joint infection (PJI) and those without PJI (aseptic TJA)

From: Variation in the IL1B, TNF and IL6 genes and individual susceptibility to prosthetic joint infection

 

PJI

Aseptic TJA

p Value

Patients; N

89

214

 

Gender; Men/Women

44/45

67/147

p = 0.003

Age at index surgery; years

63 (52–69)

47 (42–51)

p < 0.001

Joint; hip/knee/other*

39/47/3

202/12/0

p < 10-5

BMI

29 (26–30)

28 (25–30)

p = 0.3

Type of PJI:

   

Early

22

n.a.

 

Delayed

39

n.a.

 

Haematogenous

21

n.a.

 

Other

7

n.a.

 

Intraoperative culture:

   

Staphylococci

54

n.a.

 

Other pathogens

17

n.a.

 

Negative

18

n.a.

 

Primary diagnosis:

  

p < 10-5

Osteoarthritis

68

58

 

Dysplastic joint

7

96

 

Inflammatory arthritis

3

10

 

Other diagnoses

11

50

 

Comorbidity:

   

DM

11

18

p = 0.29

RA

2

11

p = 0.42

other

21

49

p = 1.0

no

55

136

p = 0.77

  1. Legend: Continuous data presented as median with interquartile (1st to 3rd) range in parentheses.
  2. p values for comparison between the groups of patients with/without PJI were calculated by Chi-square test (Pearson’s) with appropriate degrees of freedom (d.f.), Fisher exact test or Mann–Whitney U test according to the type of data. *Shoulder, elbow.
  3. BMI, body mass index; DM, diabetes mellitus; n.a., not applicable; RA, rheumatoid arthritis.
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BMC Immunology

ISSN: 1471-2172

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