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Table 2 Univariate analysis of risk factors associated with Ab-PJIa

From: Non-elective and revision arthroplasty are independently associated with hip and knee prosthetic joint infection caused by Acinetobacter baumannii: a Brazilian single center observational cohort study of 98 patients

Variables

Ab-PJIa No. (%) N = 33

NON-Ab-PJIb No. (%) N = 65

P-value#

Demographic data Age (median [variation]) (years)

71.0 (48–88)

69.0 (30–92)

0.626***

Females

16 (48.5)

41 (63.0)

0.166*

Patient-related variables

 Alcoholism

7 (21.2)

7 (10.77)

0.222*

 Smoking

4 (12.1)

9 (13.8)

1.000*

 Comorbidities (yes)

25 (75.8)

46 (70.8)

0.601**

 SAHc

20 (60.6)

40 (61.5)

0.929**

 DMd

8 (24.2)

12 (18.5)

0.502**

 Malnutrition

4 (12.1)

4 (6.2)

0.436**

 Anemia

2 (6.1)

0 (0.0)

0.111**

 Cancer

0 (0.0)

1 (1.5)

1.000**

 Lung disease

0 (0.0)

5 (7.7)

0.122**

 Metabolic syndrome

5 (15.2)

13 (20.0)

0.558*

 Cardiovascular disease

2 (6.1)

3 (4.6)

1.000**

 Other comorbiditiese

3 (9.1)

8 (12.3)

0.746**

ASA scoref, *

 ASA 1

2 (6.1)

19 (29.2)

0.009**

 ASA 2

22 (66.7)

25 (38.5)

 ASA 3

8 (24.2)

21 (32.3)

 ASA 4

1 (3.0)

0 (0.0)

Use of antimicrobials*

 Previous use

17 (51.5)

20 (30.8)

0.045*

 Single antimicrobial

6 (18.2)

5 (7.7)

0.104**

 Antimicrobial combination

11 (33.3)

15 (23.1)

 Previous PJI

12 (36.4)

8 (12.3)

0.005*

Variables related to the surgical procedure*

 Arthroplasty

  Total

24 (72.7)

51 (78.5)

0.527*

  Revision

20 (60.6)

22 (33.8)

0.011*

  Non-elective

18 (54.4)

21 (32.3)

0.034*

  Duration of the procedure > 2.5 h

3 (9.1)

12 (18.5)

0.223*

  Blood transfusion

12 (36.4)

7 (10.8)

0.002*

Variables related to the postoperative period*

 Infection-related sepsis

2 (6.1)

0 (0)

0.111**

 Concomitant non-orthopedic infection

18.2 (6)

10.8 (7)

0.352*

 Surgical wound complications

42.4 (14)

26.6 (16)

0.071*

 Early infection

48.5 (16)

81.5 (53)

0.001*

 DAIRg

57.6 (19)

76.9 (50)

0.047*

  1. Ab-PJIa Prosthetic joint infection caused by Acinetobacter baumannii, NON-Ab-PJIb non-Acinetobacter species causing prosthetic joint infection, SAHc Systemic arterial hypertension, DMd diabetes Mellitus; Other comorbiditiese; rheumatoid arthritis, hypothyroidism, hyperthyroidism, depression; ASAf American Anesthesiology Association, DAIRg debridement, antibiotics and implant retention Significance probabilities refer to the Chi-squared test (*), Fisher’s exact test (**), and Student’s t-test (***)P values# < 0.05 were considered statistically significant