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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