. 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 2.

Frequency of patient scores by risk stratification method.

Risk Stratification Method and Score	N (%)
ASA Classification

2	292 (10.0%)
3	1320 (68.5%)
4	398 (20.7%)
5	17 (0.9%)

Charlson Comorbidity Index

6	198 (13.0%)
7	257 (16.8%)
8	348 (22.8%)
9	288 (18.8%)
10	240 (15.7%)
11	109 (7.1%)
≥12	89 (5.8%)

Modified Frailty Index

0	547 (35.9%)
1	496 (32.5%)
2	301 (19.7%)
3	128 (8.4%)
4	37 (2.4%)
≥5	16 (1.1%)

ASA American Society of Anesthesiologists;