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. Author manuscript; available in PMC: 2019 Mar 1.
Published in final edited form as: J Surg Oncol. 2017 Oct 16;117(3):479–487. doi: 10.1002/jso.24866

Table 5.

Risk stratification scores and patient outcomes by operation type.

Bowel Resection
N=820
Celiotomy/Lysis of Adhesions
N=440
GI Bypass
N=223
Ostomy Creation
N=313
P Value

N % N % N % N %
ASA Classification 0.16
2 100 12.2% 42 9.6% 17 7.6% 22 7.0%
3 546 66.6% 296 67.3% 160 71.8% 219 70.0%
4 166 20.2% 98 22.3% 46 20.6% 67 21.4%
5 8 1.0% 4 0.9% 0 0.0% 5 1.6%

Charlson Comorbidity Index 0.11
 6 93 14.7% 36 10.3% 26 13.8% 28 11.0%
 7 97 15.3% 50 14.3% 37 19.7% 54 21.2%
 8 145 22.9% 73 20.9% 47 25.0% 57 22.4%
 9 110 17.4% 86 24.6% 27 14.4% 43 16.9%
 10 108 17.0% 49 14.0% 31 16.5% 42 16.5%
 11 44 6.9% 28 8.0% 12 6.4% 18 7.1%
 ≥12 37 5.8% 27 7.7% 8 4.3% 13 5.1%

Modified Frailty Index 0.33
 0 223 35.2% 114 32.8% 74 39.6% 103 40.6%
 1 215 33.9% 110 31.6% 63 33.7% 72 28.4%
 2 119 18.8% 79 22.7% 33 17.7% 47 18.5%
 3 57 9.0% 27 7.8% 12 6.4% 25 9.8%
 4 16 2.5% 10 2.9% 4 2.1% 4 1.6%
 ≥5 4 0.6% 8 2.3% 1 0.5% 3 1.2%

Prolonged LOS 227 27.7% 99 22.6% 67 30.2% 58 18.6% 0.002

30-Day Overall Morbidity 356 43.4% 143 32.5% 81 36.3% 74 23.6% <0.0001

30-Day Serious Morbidity 219 26.7% 78 17.7% 38 17.0% 39 12.5% <0.0001

30-Day Mortality 122 14.9% 73 16.6% 22 9.9% 48 15.3% 0.14