Impact of Preoperative Quality of Life and Related Factors on the Development of Surgical Site Infections Following Primary Total Joint Arthroplasty: A Prospective Case-Control Study with a Five-Year Follow-Up

Table 2

Preoperative and postoperative laboratory findings of the included population.

Parameters	Preop values (median value ± SD)	Postop values (median value ± SD)	Laboratory values at hospital discharge	% differences
Haematocrit (%)	41.7 ± 3.9	36.8 ± 4.1	32.5 ± 4.4	−21.8	<0.001
Haemoglobin (g/dl)	13.4 ± 1.3	11.8 ± 1.3	10.5 ± 1.4	−21.2	<0.001
Creatinine (mg/dl)	0.94 ± 0.23	1.23 ± 0.37	0.99 ± 0.30	+6.3	0.265
Urea (mg/dl)	41.8 ± 17.5	38.2 ± 17.0	36.9 ± 15.6	−7	0.020