Table 3.
Baseline characteristics of complete retention group and incomplete retention group for the comparison of OS before PSM and after PSM
| Characteristics | Before PSM | After PSM | ||||
|---|---|---|---|---|---|---|
| Complete retention (n = 86) | Incomplete retention (n = 112) | P | Complete retention (n = 74) | Incomplete retention (n = 74) | P | |
| Age | 59.69 ± 11.13 | 57.99 ± 11.49 | 0.298 | 59.86 ± 11.23 | 59.09 ± 11.36 | 0.679 |
| Gender | 0.070 | 0.372 | ||||
| Male | 65 | 96 | 60 | 64 | ||
| Female | 21 | 16 | 14 | 10 | ||
| Number of tumors | 0.510 | 0.865 | ||||
| Single | 49 | 69 | 47 | 46 | ||
| Multiple | 37 | 43 | 27 | 28 | ||
| Child–Pugh class | 0.110 | 0.181 | ||||
| A | 68 | 98 | 59 | 65 | ||
| B | 18 | 14 | 15 | 9 | ||
| Etiologies of hepatitis | 0.196 | 0.760 | ||||
| None | 7 | 14 | 7 | 5 | ||
| HBV | 54 | 69 | 43 | 49 | ||
| HCV | 9 | 11 | 9 | 9 | ||
| Alcohol | 10 | 7 | 9 | 5 | ||
| Others | 6 | 11 | 6 | 6 | ||
| Cirrhosis | 0.220 | 0.840 | ||||
| Yes | 68 | 80 | 59 | 58 | ||
| No | 18 | 32 | 15 | 16 | ||
| AFP | 0.833 | 0.814 | ||||
| ≤ 400 ng/mL | 72 | 95 | 63 | 64 | ||
| > 400 ng/mL | 14 | 17 | 11 | 10 | ||
| Platelet | 122.49 ± 79.14 | 132.07 ± 70.74 | 0.371 | 125.05 ± 84.89 | 125.93 ± 70.91 | 0.946 |
| Time interval | 0.005 | 0.569 | ||||
| Within 1 month | 69 | 69 | 57 | 54 | ||
| Beyond 1 month | 17 | 43 | 17 | 20 | ||
| TLI | 0.843 | 0.707 | ||||
| Alone | 21 | 26 | 20 | 18 | ||
| TACE | 65 | 86 | 54 | 56 | ||
| Ablation type | 0.979 | 0.831 | ||||
| MWA | 70 | 91 | 60 | 61 | ||
| RFA | 16 | 21 | 14 | 13 | ||
| Tumor size | 0.054 | 0.866 | ||||
| ≤ 3 cm | 57 | 59 | 46 | 45 | ||
| > 3 cm | 29 | 53 | 28 | 29 | ||
| Watershed | 0.243 | 0.711 | ||||
| Yes | 19 | 33 | 19 | 21 | ||
| No | 67 | 79 | 55 | 53 | ||
| Perivascular | 0.111 | 0.742 | ||||
| Yes | 41 | 68 | 38 | 40 | ||
| No | 45 | 43 | 36 | 34 | ||
| Subcapsular | 0.757 | 0.731 | ||||
| Yes | 55 | 74 | 49 | 47 | ||
| No | 31 | 38 | 25 | 27 | ||
| Tumor shape | 0.012 | 0.351 | ||||
| Regular | 68 | 70 | 57 | 52 | ||
| Irregular | 18 | 42 | 17 | 22 | ||
| Vascularity | 0.839 | 0.785 | ||||
| Hyper- | 76 | 100 | 67 | 66 | ||
| Hypo- | 10 | 12 | 7 | 8 | ||
In patients with multiple lesions, the characteristics of the largest lesion were recorded for analysis
OS overall survival, PSM Propensity score matching, AFP Alpha fetoprotein, TLI transarterial Lipiodol injection, MWA Microwave ablation, RFA Radiofrequency ablation