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Table 4 Mortality differences between early and delayed surgery.

From: Timing of surgery for hip fracture and in-hospital mortality: a retrospective population-based cohort study in the Spanish National Health System

   Mortality in
early surgery
Mortality in
delayed surgery
Mortality differences between early and delayed surgery
   N % n % % 95CI p
Age 60-69 years 930 0.86 2,654 1.09 -0.23 -0.95; 0.48 0.546
  70-79 years 3,825 2.09 12,015 2.66 -0.57 -1.10; -0.03 0.050
  80-89 years 6,658 3.97 20,651 4.52 -0.56 -1.10; -0.01 0.053
  90+ years 2,585 7.23 7,182 8.28 -1.05 -2.24; 0.13 0.091
Sex Male 2,750 6.58 9,404 6.81 -0.22 -1.28; 0.83 0.681
  Female 11,240 3.19 33,088 3.84 -0.56 -0.94; -0.17 0.006
Fracture Intracapsular 5,400 3.31 17,404 4.13 -0.82 -1.38; -0.25 0.007
  Trochanteric 7,747 3.95 22,252 4.38 -0.43 -0.94; 0.08 0.109
  NOS 851 6.35 2,846 6.50 -0.15 -2.02; 1.72 0.872
Surgery Fixation 9,394 3.94 25,820 4.47 -0.45 -0.92; -0.02 0.065
  Arthroplasty 4,604 3.67 16,682 4.39 -0.79 -1.42; -0,17 0.018
Weekend No 10,824 3.73 30,935 4.49 -0.76 -1.18; -0.33 < 0.001
Admission Yes 3,174 4.25 11,567 4.23 0.02 -0,77; 0.82; 0.949
Charlson 0 9,644 2.98 26,727 3.21 -0.23 -0.63; 0.17 0.266
Index 1 3,402 4.32 11,820 4.96 -0.64 -1.42; 0.15 0.126
  2 721 8.88 2,877 9.04 -0.16 -2.49; 2.16 0.893
  3 148 18.92 654 13.00 5.92 -0.89; 12.73 0.061
  > 3 83 15.66 424 21.23 -5.56 -14.30; 3.17 0.249
Risk 0 512 0.00 1,306 0.46 -0.46 -0.83; -0.09 0.124
Mortality 4-6 2,747 0.66 7,620 0.96 -0.30 -0.67; 0.06 0.145
Index 7-12 5,527 2.12 16,710 2.30 -0.19 -0.63; 0.02 0.417
  > 12 5,212 7.75 16,866 8.38 -0.63 -1.47; 0.02 0.147
Number of 0-1 5,783 1,25 13,863 1.49 -0.24 -0.59; 0.10 0.193
Secondary 2-3 4,629 3.05 13,343 2.59 -0.49 -0.10; 1.02 0.096
Diagnoses 4-6 2,364 5.58 8,958 5.38 0.20 -0.83; 1.23 0.698
  > 6 1,222 15.88 6,338 13.33 2.54 0.33; 4.75 0.018
Time to 0-1 days 13,998 3.85 -- -- -- -- --
Surgery 2-5 days -- -- 28,069 3.81 -- -- --
  6-14 days -- -- 13,303 5.93 -- -- --
  14-30 days -- -- 1,130 9.91 -- -- --
Year 2002 3,528 3.29 10,065 4.87 -1.58 -2.30; -0.86 < 0.001
  2003 3,705 3.99 10,698 4.61 -0.61 -1.36; 0.13 0.118
  2004 3,549 4.25 10,684 4.15 0.10 -0.66; 0.87 0.780
  2005 3,216 3.86 11,055 4.09 -0.23 -0.99; 0.53 0.555
TOTAL   13,998 3.85 42,502 4.42 -0.57 -0.94; -0.19 0.004
  1. Stratified analysis.
  2. Variables with missing values: sex (n = 18); NOS: Non-Otherwise Specified; 95%CI: 95% confidence interval.