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Table 1 Baseline data according to cognitive function in the Norwegian Hip Fracture Register

From: Validation of orthopaedic surgeons’ assessment of cognitive function in patients with acute hip fracture

 

Total

Cognitive impairment

p-value

No

Uncertain

Yes

Total n (%)

1.474

870 (59.0)

147 (10.0)

457 (31.0)

 

Women (%)

1.111 (75.4)

651 (74.8)

100 (68.0)

360 (78.8)

0.026

Mean age (SD)

84.2 (7.9)

82.8 (8.3)

85.4 (7.2)

86.4 (6.8)

< 0.001#

Age group (%)

    

< 0.001*

  < 75

196 (13.3)

153 (17.6)

13 (8.8)

30 (6.6)

 

 75–79

181 (12.3)

124 (14.3)

16 (10.9)

41 (9.0)

 

 80–84

265 (18.0)

161 (18.5)

25 (17.0)

79 (17.3)

 

 85–89

430 (29.2)

239 (27.5)

47 (32.0)

144 (31.5)

 

  ≥ 90

402 (27.3)

193 (22.2)

46 (31.3)

163 (35.7)

 

ASA class (%)

    

< 0.001*

 ASA 1

26 (1.8)

26 (3.0)

0 (0)

0 (0)

 

 ASA 2

546 (37.0)

392 (45.1)

39 (26.5)

115 (25.2)

 

 ASA 3

847 (57.5)

425 (48.9)

102 (69.4)

320 (70.0)

 

 ASA 4

52 (3.5)

26 (3.0)

6 (4.1)

20 (4.4)

 

Missing ASA

3 (0.2)

1 (0.1)

0 (0)

2 (0.4)

 

Fracture type (%)

    

0.458

 Undisplaced FNF

220 (14.9)

138 (15.9)

20 (13.6)

62 (13.6)

 

 Displaced FNF

606 (41.1)

352 (40.5)

62 (42.2)

192 (42.0)

 

 Trochanteric fracture

550 (37.3)

319 (36.7)

61 (41.5)

170 (37.2)

 

 Subtrochanteric

67 (4.5)

42 (4.8)

4 (2.7)

21 (4.6)

 

 Othera

31 (2.1)

19 (2,2)

0 (0)

12 (2.6)

 

Primary operation (%)

    

0.909

 Screw osteosynthesis

230 (15.6)

142 (16.3)

23 (15.6)

65 (14.2)

 

 Hemiarthroplasty

598 (40.6)

349 (40.1)

59 (40.1)

190 (41.6)

 

 Sliding hip screw

630 (42.7)

367 (42.2)

65 (44.2)

198 (43.3)

 

 Otherb

16 (1.1)

12 (1.4)

0 (0)

4 (0.9)

 
  1. * = ANOVA # = Pearson’s chi square
  2. ASA American society of anaesthesiologists
  3. FNF Fracture of femoral neck
  4. AO/OTA AO/Orthopaedic Trauma Association
  5. Other afracture types including basocervikal fractures
  6. Other boperation methods including intramedullary nail