Limited value of serum neutrophil-to-lymphocyte ratio in the diagnosis of chronic periprosthetic joint infection

Journal of Orthopaedics and Traumatology

Official Journal of the Italian Society of Orthopaedics and Traumatology

Table 1 Demographic features of patients who underwent revision surgery

Group and variable	Aseptic revision	PJI	p-Value
No. of patients	104	54
Age^a	63.40 ± 12.70	64.48 ± 10.83	0.596^c
Sex^b			0.453^d
Female	65 (62.5%)	37 (68.5%)
Male	39 (37.5%)	17 (31.5%)
Joint^b			< 0.001^d
Hip	85 (81.7%)	27 (50.0%)
Knee	19 (18.3%)	27 (50.0%)
Diabetes mellitus^b			0.557 ^d
Diabetic	12 (11.5%)	8 (14.8%)
Nondiabetic	92 (88.5%)	46 (85.2%)
Blood pressure^b			0.002^d
Hypertension	22 (21.2%)	24 (44.4%)
Nonhypertension	82 (78.8%)	30 (55.6%)

PJI periprosthetic joint infection
^aData are presented as the mean ± standard deviation
^bData are presented as the number (percentage) of patients
^cp-Value was calculated by the independent t-test
^dp-Value was calculated by the χ² test. p < 0.05 indicates a significant difference between groups