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Table 1 Demographics of patients

From: Incidence and risk factors of acute kidney injury after femoral neck fracture in elderly patients: a retrospective case-control study

  Overall N=308 With AKI N=37 Without AKI N=271 P-Valve
Age (mean ± SD)     0.052
  79.06±7.30 81.24±7.32 78.76±7.26  
Gender n (%)     1.000
 Female 216 (70.1%) 26 (70.3%) 190 (70.1%)  
 Male 92 (29.9%) 11 (29.7%) 81 (29.9%)  
Complications n (%)     0.953
 Dementia 15 (4.9%) 3 (8.1%) 12 (4.4%)  
 Hypertension 171 (55.5%) 20 (54.1%) 151 (55.7%)  
 Diabetes mellitus 83 (26.9%) 10 (27.0%) 73 (27.0%)  
 CHD 60 (19.5%) 8 (21.6%) 52 (19.2%)  
 CVA 62 (20.1%) 8 (21.6%) 54 (20.0%)  
 COPD 7 (2.3%) 1 (2.7%) 6 (2.2%)  
 CRF 9 (2.9%) 1 (2.7%) 8 (3.0%)  
BMI (mean ± SD)     0.820
  24.10+3.31 24.09+3.32 24.22+3.31  
Time to surgery (mean ± SD)     0.842
  7.29+5.98 7.11+6.00 7.32+5.99  
  1. CHD coronary heart disease, CVA cerebrovascular accident, COPD chronic obstructive pulmonary disease, CRF chronic renal insufficiency, BMI body mass index