Table 2.
Effect of different factors on the Similarity of Positioning Score (SiPS).
| SiPS-ida (n = 52) | SiPS-diffa (n = 45) | P value | |
|---|---|---|---|
| Index-tumor size (mean ± SD)b | 14.1 mm (1.9) | 13.6 mm (1.8) | 0.773 |
| RFA approachc | |||
| Open RFA (n = 63) | 37 (59%) | 26 (41%) | 0.203 |
| CT-targeted RFA (n = 34) | 15 (44%) | 19 (56%) | |
| Partial hepatectomy during RFAc | |||
| Yes (n = 43) | 24 (56%) | 19 (44%) | 0.838 |
| No (n = 54) | 28 (52%) | 26 (48%) | |
| No. of tumours ablatedc | |||
| 1-2 (n = 70) | 40 (57%) | 30 (43%) | 0.364 |
| ≥3 (n = 27) | 12 (44%) | 15 (56%) | |
| Localizationc | |||
| Subcapsular (n = 76) | 44 (58 %) | 32 (42 %) | 0.140 |
| Central (n = 21) | 8 (38 %) | 13 (62 %) |
aSiPS: Similarity of Positioning Score, identical (SiPS-id) or different (SiPS-diff).
bStudent's t-test.
cChi-square or Fisher's exact test.