Assessment of the effectiveness of weight-adjusted antibiotic administration, for reduced duration, in surgical prophylaxis of primary hip and knee arthroplasty

Table 4 Incidence of superficial and deep surgical site infections after 2 years follow up in patients undergoing elective primary total hip and knee arthroplasty (THA/TKA; Complete demographic data subgroup)

	Old regime	New regime
	n = 310 joints	n = 458 joints
Total number of infections, n (%)	9 (2.9)	9 (2.0)
Superficial infections, n (%)	8 (2.6)	7 (1.5)
	THA, n = 2	THA, n = 1
	TKA, n = 6	TKA, n = 6
Deep/organ space infections	1 (0.3)	2 (0.5)
	THA, n = 1	THA, n = 2

THA: Total hip arthroplasty; TKA: Total knee arthroplasty.