Retrospective Study
Copyright ©The Author(s) 2022.
World J Orthop. Oct 18, 2022; 13(10): 921-931
Published online Oct 18, 2022. doi: 10.5312/wjo.v13.i10.921
Table 4 Patient demographics, length of stay, comorbidity indices and theatre parameters for 2019

Phase 0 (n = 664)
Phase 1 (n = 563)
Phase 2 (n = 1315)
Phase 3 (n = 471)
Total (n = 3013)
mean ± SD
Age at injury58.89 ± 24.0360.66 ± 23.1758.66 ± 23.9561.11 ± 22.9859.47 ± 23.68
Length of spell (d)7.30 ± 8.057.50 ± 9.906.67 ± 8.608.01 ± 10.887.18 ± 9.14
Charlson Comorbidity Index0.71 ± 1.280.84 ± 1.490.78 ± 1.350.77 ± 1.300.77 ± 1.35
Elixhauser Comorbidity Index1.20 ± 1.381.36 ± 1.551.39 ± 1.531.34 ± 1.421.33 ± 1.49
Hours to surgery32.02 ± 57.6432.13 ± 51.5629.17 ± 47.0331.96 ± 56.8330.79 ± 51.99
Time in theatre101.03 ± 49.4996.30 ± 67.0494.85 ± 57.6195.95 ± 47.6396.64 ± 56.36
Time in theatre/recovery213.08 ± 110.23208.29 ± 115.17214.99 ± 141.51228.39 ± 146.20215.56 ± 131.70
Sex: Female332 ± 50.0%291 ± 51.7%675 ± 51.3%239 ± 50.7%1537 ± 51.0%
Sex: Male332 ± 50.0%272 ± 48.3%640 ± 48.7%232 ± 49.3%1476 ± 49.0%