Efficacy and safety of two-stage revision for patients with culture-negative versus culture-positive periprosthetic joint infection: a single-center retrospective study

Table 1 Clinicodemographic characteristics of patients with periprosthetic joint infection, stratified by culture test results

Characteristic	Total (n = 87)	Culture-negative (n = 24)	Culture-positive (n = 63)	p value
Female, n (%)	44 (50.6)	16 (66.7)	28 (44.4)	0.064
Age, years	58.8 ± 13.8	58.1 ± 12.9	59.1 ± 14.2	0.765
Body mass index, kg/m²	23.8 ± 3.9	22.4 ± 3.6	24.2 ± 3.9	0.087
Sinus	32 (36.8)	6 (25.0)	16 (41.3)	0.160
Follow-up	72.3 ± 30.4	78.5 ± 29.6	70.0 ± 30.6	0.243
Time to reimplantation*	7 (7)	7 (7)	7 (7.25)	0.609
Comorbidities
Smoking	25 (28.7)	4 (16.7)	21 (33.3)	0.125
Alcohol	22 (25.3)	4 (16.7)	18 (28.6)	0.254
Hypertension	27 (31.0)	7 (29.2)	20 (31.7)	0.816
Diabetes	12 (13.8)	2 (8.3)	10 (15.9)	0.362
Cardiovascular disease	4 (4.6)	0 (0.0)	4 (6.3)	0.489
Chronic obstructive pulmonary disease	3 (3.4)	0 (0.0)	3 (4.8)	0.558
Inflammatory disease	8 (9.2)	5 (20.8)	3 (4.8)	0.057
Joint involved				0.169
Hip	57 (65.5)	13 (54.2)	44 (69.8)	-
Knee	30 (34.5)	11 (45.8)	19 (30.2)	-

The median (interquartile range) was used to describe *; apart from that, values are described with n (%) or mean ± SD

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