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Table 3 Logistic regression analysis of the use of trochanteric support plate (TSP) in adjunction to a sliding hip screw (SHS) depending on patient characteristics, fracture classification, and hospital characteristics. The analysis was performed on 10,600 cases operated with SHS (7308 (69%) without TSP and 3292 (31%) with TSP) with complete data

From: Implants for trochanteric fractures in Norway: the role of the trochanteric stabilizing plate—a study on 20,902 fractures from the Norwegian hip fracture register 2011–2017

  OR for TSP 95% CI for OR p
Patient characteristics
 Higher age (years) 1.0 0.99–1.0 0.9
 Female sex 1.2 1.1–1.3 0.004
 ASA > 2 1.1 1.0–1.2 0.05
 Cognitive impairment (yes) 1.1 0.97–1.2 0.2
Fracture type
 AO/OTA 31A1 1   
 AO/OTA 31A2 14 12–16 < 0.001
 AO/OTA 31A3 and subtrochanteric 71 54–93 < 0.001
Surgeon experience > 3 years 0.9 0.8–1.0 0.05
Hospital characteristics
 Academic hospital 1.2 1.1–1.4 0.009
 High-volume hospital (> 100 cases/year) 1.3 1.1–1.5 < 0.001
 Urban hospital 1.2 1.0–1.4 0.01
 Health region South-Eastern Norway 1   
 Health region Western Norway 0.9 0.82–1.1 0.4
 Health region Central Norway 0.3 0.25–0.35 < 0.001
 Health region Northern Norway 0.7 0.52–0.83 < 0.001