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Table 1 Overview of patient and injury epidemiology in relation to fracture typea

From: Epidemiology, treatment and mortality of trochanteric and subtrochanteric hip fractures: data from the Swedish fracture register

  31-A1 31-A2 31-A3
(n = 3067) (n = 5191) (n = 2288)
Age years, mean (±SD) 82.2 (10.3) 83.2 (9.8) 81.0 (12.0)
% (n=)
Female gender 65 (1981/3067) 72 (3725/5191) 70 (1610/2288)
Injury location
 At residence 74 (2202/2960) 75 (3816/5069) 73 (1611/2218)
 Public place 4.8 (143/2960) 4.6 (233/5069) 4.4 (97/2218)
 Street/road 3.5 (103/2960) 3.6 (183/5069) 4.1 (92/2218)
 Other 17 (512/2960) 17 (837/5069) 19 (418/2218)
Injury mechanism
 Fall at same level 84 (2561/3067) 84 (4363/5191) 82 (1870/2288)
 Unspecified fall 9.7 (299/3067) 10 (532/5191) 8.9 (203/2288)
 Fall from height 3.6 (111/3067) 3.4 (179/5191) 5.7 (130/2288)
 Traffic 2.4 (74/3067) 1.7 (87/5191) 2.2 (51/2288)
 Other 0.7 (22/3067) 0.6 (30/5191) 1.5 (34/2288)
High energy trauma
 Yes 1.4 (43/2971) 1.1 (55/5045) 3.2 (71/2229)
 No 97 (2890/2971) 98 (4924/5045) 96 (2134/2229)
 Unknown 1.3 (38/2971) 1.3 (66/5045) 1.1 (24/2229)
 Open fracture 0 (0) 0.1 (5/5191) 0.4 (9/2288)
  1. Data is presented in relation to the number of available inputs in the register
  2. aFracture type according to the AO/OTA classification:
  3. 31-A1 Simple trochanteric fractures
  4. 31-A2 Multifragmented trochanteric fractures
  5. 31-A3 Trochanteric reverse oblique and subtrochanteric fractures