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Table 2 Subject characteristics by treatment group

From: Quantitative contrast enhanced dual energy CT to predict avascular necrosis: a feasibility study of proximal humerus fractures

Characteristics Treatment p
Arthroplasty Conservative ORIF
n 17 17 21
Age: Mean (SD) 71 (13) 63 (14) 46 (16) < 0.001a
Gender 14 Female
3 Male
10 Female
7 Male
6 Female
15 Male
0.003a
Ethnicity 5 Black
1 Asian
11 White
6 Black
11 White
5 Black
16 White
NSa
Iodine concentration mg/ml
Humerus (SD) 3.97 (0.70) 3.97 (0.97) 4.78 (1.22) 0.022a
Glenoid (SD) 4.51 (1.23) 4.72 (1.24) 5.17 (1.61) NSa
Humerus/glenoid (SD) 0.94 (0.27) 0.88 (0.25) 0.96 (0.22) NSa
Follow up
12 Months   8 12 NSb
12 Months with AVN 0 2 NSb
24 Months 4 10 NSb
24 Months with AVN 0 3 NSb
Fracture healing
Healed < 12 months   9 10 NSb
Healed ≤ 24 months   9 13 NSb
  1. aOne way ANOVA
  2. bFischer Exact Test Chi-square