Characterization of the clonal profile of methicillin resistant Staphylococcus aureus isolated from patients with early post-operative orthopedic implant based infections

Table 3 Association of MRSA isolates with patient characteristics in early SSI of orthopedic implants

All types of implant infections (N = 50)	ST239 MRSA (n = 33)	ST22 MRSA and others (n = 17)	Comparison ST239 MRSA vs. ST22 and other ST types p-value*
Patient population: female	11 (36.37%)	5 (29.4%)	0.2
Mean age	40.21 years	37.35 years	0.5
Obesity (BMI > 30)	8 (24.24%)	4 (23.52%)	0.9
Mean time between implantation and onset of infection	14.21 days	11.29 days	0.16
Mean duration of antibiotics (antibiotic exposure)	28.51 days	19.58 days	0.000*
Elective surgery	8 (24.24%)	2 (11.76%)	0.2
Mean no. of surgical interventions (repeated debridement)	2.75	2.52	0.37
Removal of infected implant	26 (78.79%)	8 (47.05%)	0.02*
Re-implantation of a new implant	21 (63.64%)	6 (35.29%)	0.05*
Cure	23 (69.69%)	13 (76.47%)	0.00*
Mean length of hospital stay	34.9 days	27.41 days	0.02*

ISSN: 1476-0711