Table 1

Patient characteristics by the nonunion status
Characteristic All N = 853 With nonunion N = 99 Without nonunion N = 754 P values
N % N % N %
Sex:
Male 378 44.3% 47 47.5% 331 43.9% 0.50
Female 475 55.7% 52 52.5% 423 56.1%
Age at Index Date:
Median 54 53 55 0.54
Mean 53 52 53
SD 16 15 17
Range 18–93 18–87 18–93
Charlson Comorbidity Index:
Median 1 1 1 0.45
Mean 2 2 2
SD 2 2 2
Range 0–15 0–7 0–15
Additional fractures:
Lower Limb 612 71.70% 88 88.90% 524 69.50% < 0.001
Upper Limb 90 10.60% 12 12.10% 78 10.30% 0.59
Spine and Trunk 70 8.20% 16 16.20% 54 7.20% 0.0022
Skull 15 1.80% 5 5.10% 10 1.30% 0.008
Open fracture status
Open 132 15.5% 30 30.3% 102 13.5% < 0.001ξ
Closed 721 84.5% 69 69.7% 652 86.5%

Notes: † P-value is based on the T-test, ‡ P-value is based on the Wilcoxon test; ξ - P-value is based on the Chi-Square test; SD – standard deviation.

Antonova et al.

Antonova et al. BMC Musculoskeletal Disorders 2013 14:42   doi:10.1186/1471-2474-14-42

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