Table 2 Univariate logistic regression of the risk factors
Variable | OR | 95% CI | P value |
|---|---|---|---|
Sex | |||
Female | Reference | Reference | |
Male | 1.068 | 0.587–1.943 | 0.829 |
Age (years) | 1.023 | 1.001–1.046 | 0.041 |
BMI | 1.056 | 0.962–1.158 | 0.253 |
NEER classification | 0.016 | ||
Two-part | Reference | Reference | |
Three-part | 2.418 | 1.131–5.172 | 0.023 |
Four-part | 3.258 | 1.419–7.480 | 0.005 |
Fracture-dislocation | |||
No | Reference | Reference | |
Yes | 1.385 | 0.609–3.148 | 0.437 |
Low BMD of proximal humerus | |||
No | Reference | Reference | |
Yes | 1.301 | 0.719–2.352 | 0.384 |
Humeral head extension | |||
≥ 8 mm | Reference | Reference | |
> 8 mm | 2.621 | 1.443–4.762 | 0.002 |
Medial hinge comminuted | |||
No | Reference | Reference | |
Yes | 4.729 | 2.159–10.359 | < 0.001 |
GT comminuted | |||
No | Reference | Reference | |
Yes | 2.494 | 1.038–5.990 | 0.041 |
Volume of the main GT fragment (mm3) | 1.0 | 1.0–1.0 | 0.894 |
Surface area of the main GT fragment (mm2) | 1.0 | 1.0–1.0 | 0.890 |
The main GT fragment separate (from humeral head) | |||
No | Reference | Reference | |
Yes | 1.505 | 0.774–2.926 | 0.228 |
Displacement of the main GT fragment (mm) | 1.023 | 0.985–1.063 | 0.235 |
Adequate medial support | |||
Yes | Reference | Reference | |
No | 0.723 | 0.362–1.444 | 0.358 |
Residual head-shaft displacement | |||
≤ 5 mm | Reference | Reference | |
> 5 mm | 1.192 | 0.562–2.529 | 1.647 |
Head-shaft angle | 0.328 | ||
110°–150° | Reference | Reference | |
> 150° or < 110° | 0.611 | 0.232–1.609 | 0.319 |
Residual GT displacement | 0.165 | ||
≤ 5 mm | Reference | Reference | |
> 5 mm | 8.074 | 4.026–16.191 | < 0.001 |