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Table 1 Clinical data of included patients

From: Value of mNGS in sonication fluid for the diagnosis of periprosthetic joint infection

Characteristics All patients (n = 37) PJI (n = 24) AF (n = 13) p-value
Patient age, median (range)- years 65.38 ± 12.982 67.83 ± 11.38 60.85 ± 14.94 0.119
Gender, female, (no)% 17 (45.9) 9 (37.5) 8 (61.5) 0.161
Location, (no)% 0.823
 Hip 19 12 7  
 Knee 18 12 6  
 Sinus 15 15 0 0.002
Antibiotics prior to surgery 16 15 1 0.002
Serum CRP, media (range)-mg/L 27.05 ± 39.74 39.31 ± 44.99 4.43 ± 1.76 0.001
ESR, media (range)-mm/h 52.11 ± 35.10 65.42 ± 34.81 27.54 ± 19.13 0.001
SF-WBC, media (range)- × 106/L 25942.68 ± 62572.93 39722.13 ± 74594.79 503.69 ± 482.02 0.017
SF-PMN, media (range)-% 64.61 ± 21.37 76.22 ± 14.98 43.17 ± 13.11 0.001
  1. CRP C-reactive protein, ESR erythrocyte sedimentation rate, SF-WBC synovial fluid white blood cell count, SF-PMN synovial fluid polymorphonuclear neutrophils