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Table. 4.

Associations of Variables with Liver Progression-free Survival

No. of patients (n = 64) Liver progression-free survival

1-year (%) 3-year (%) 5-year (%) 7-year (%) Median 95% CI P
Technique 0.122
MWA 33 75.3 44.8 35.9 23.1 41.22 (5.60) 30.25–52.20
RFA 31 79.3 60.3 50.3 50.3 53.43 (6.28) 41.11–65.74
K-ras oncogene < 0.001
Wild-type 34 81.4 71.2 71.2 64.7 62.24 (5.86) 50.75–73.73
Mutated 30 79.7 32.7 14.0 9.4 31.90 (4.47) 23.13–40.67
Prior systemic chemotherapy* 0.665
No 39 81.5 52.8 45.7 37.2 48.47 (5.35) 37.96–58.97
Yes 25 70.8 51.0 37.2 37.2 45.02 (7.11) 31.07–58.97
Colorectal localization 0.144
Right 16 68.8 40.1 30.1 20.1 35.80 (6.68) 22.70–48.90
Left/rectum 48 80.3 56.4 47.3 43.4 50.36 (5.00) 40.56–60.17
Lung metastasis < 0.001
No 49 85.0 61.0 52.2 45.2 54.04 (4.74) 44.73–63.34
Yes 15 53.3 25.0 0.0 0.0 21.96 (4.88) 12.39–31.53

CI, confidence interval; MWA, microwave ablation; RFA, radiofrequency ablation.

*Prior systemic chemotherapy choice was neoadjuvant in all patients (see Table 1).

†Median survival is shown on a monthly basis, while annual survival is shown as a percentage. Values in parentheses are standard error values.

‡Log-rank comparison between variables.

Int J Gastrointest Interv 2023;12:130~139 https://doi.org/10.18528/ijgii230019
© Int J Gastrointest Interv