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. Author manuscript; available in PMC: 2018 Aug 1.
Published in final edited form as: Surgery. 2017 May 24;162(2):377–384. doi: 10.1016/j.surg.2017.03.014

Table 3.

Relative Risk of Poor Outcome by Psoas Density, Psoas Size

Psoas Density HUAC (IQR1 vs IQR2 - 4) Relative Risk (95% CI)
90 Day Mortality* 5.95 (1.56 – 22.6) p = 0.008
Length of Stay ≥ 7 days* 1.63 (1.02 – 2.59) p = 0.048
Complication* 2.30 (1.37 – 3.85) p = 0.002
Dependent Discharge* 2.14 (1.18 – 3.88) p = 0.015
Psoas Area PI (IQR1 vs IQR2 - 4)
90 Day Mortality* 5.95 (1.56 – 22.6) p = 0.008
Length of Stay ≥ 7 days 0.78 (0.33 – 1.41) p = 0.402
Complication 1.03 (0.56 – 1.92) p = 0.915
Dependent Discharge 0.86 (0.18 – 1.25) p = 0.102

HUAC; Hounsfield Unit Average Calculation, IQR; Interquartile Range, PI; Psoas Index, CI; Confidence Interval.

*

marks significance below α = 0.05 level