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Table 2 The demographics and clinical characteristics for the culture-negative and culture-positive group

From: High rate of unexpected positive cultures in presumed aseptic revision of stiff shoulders after proximal humerus osteosynthesis

VariableAll patients, n = 62Culture-negative group, n = 31Culture-positive group, n = 31P-value
Age at revision (yrs)a61.3 ± 14.562 ± 14.660.6 ± 14.70.7
Genderb   0.12
 Male25 (40)9 (29)16 (52) 
 Female37 (60)22 (71)15 (48) 
Radiographic evaluationb
 Malunion12 (19)6 (19)6 (19) 
 Nonunion5 (8)3 (10)2 (6) 
 AVN18 (29)11 (36)7 (23) 
 Combination13 (21)4 (13)9 (29) 
 Negative14 (23)7 (23)7 (23) 
Shoulder stiffnessb, c34/47 (72)15/26 (58)19/21 (91)0.02
Serum CRP level (mg/l)a5.4 ± 7.33.8 ± 36.8 ± 9.70.69
Time from index surgery until revision (months)a16.2 ± 20.620.5 ± 24.412.4 ± 15.80.02
ASA score (median, range)2 (1–3)2 (1–3)2 (1–3) 
  1. AVN Avascular necrosis
  2. aThe values are given as the mean and the standard deviation. bThe values are given as the number with the percentage of the group in parentheses
  3. cIncluding only patients with an interval of ≥6 months between the index osteosynthesis and revision surgery