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Table 1 Characteristics of patients with CC398 Bone and joint infections

From: Epidemiology and risk factors of Staphylococcus aureus CC398 bone and joint infections

 CC 398 (n = 124)Non CC 398 (n = 834)Univariate P value
Age (years), mean ± SD62.2 (±18.6)64.3 (±18.7)0.24
Male sex, n (%)91 (73)573 (69)0.34
Mc Cabe Score
 Non fatal, n (%)110 (88.7)761 (91.2)0.19
 Ultimately fatal, n (%)13 (10.5)63 (7.6) 
 Rapidly fatal, n (%)1 (0.8)10 (1.2) 
MSSA, n (%)120 (97)701 (84)< 0.001
Charlson’s comorbidity score, mean ± SD2.46 (±2.22)2.08 (±1.94)0.073
Year of infection
 20104 (3.2)89 (11)< 0.001
 20112 (1.6)100 (12) 
 20124 (3.2)92 (11) 
 201315 (12)88 (11) 
 201420 (16)118 (14) 
 201518 (15)120 (14) 
 201626 (21)126 (15) 
 201735 (28)101 (12) 
Recent hospitalisation (< 1 yr), n (%)62 (50)474 (57)0.18
Surgery (< 1 yr), n (%)68 (55)428 (51)0.53
BJI Type
 Arthritis, n (%)8 (6.5)47 (5.6)0.87
 Osteomyelitis, n (%)15 (12,1)119 (14.3)0.52
 Vertebral osteomyelitis, n (%)06 (0.7)1
 Diabetic foot osteomyelitis, n (%)37 (29.8)207 (24.8)0.28
 BJI related to decubitus ulcer, n (%)4 (3.2)40 (4.8)0.58
 BJI related to peripheral vascular disease7 (5.7)101 (12.1)0.05
 Orthopaedic device infection, n (%)53 (42.7)314 (37.7)0.31
  including PJI, n (%)23 (18.6)121 (14.5)0.3
  including osteosynthesis infection, n (%)29 (23.4)184 (22.1)0.83
  including vertebral ODI, n (%)1 (0.8)9 (1.1)1
BJI characteristics
 Evolution delay (months)28 (±62.9)37.6 (±101.7)0.32
 Chronic BJI (i.e. evolution delay > 4 weeks), n (%)49 (75)270 (68)0.29
 Bacteremiae, n (%)20 (16)87 (10)0.084
BJI mechanisms
 Haematogenous, n (%)4 (3.2)49 (5.9)0.32
 Inoculation, n (%)62 (50)369 (44)0.27
 Contiguity, n (%)58 (47)416 (50)0.58
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