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. 2023 Aug 17;13:1240008. doi: 10.3389/fonc.2023.1240008

Table 3.

Subgroup analysis for OS.

Subgroup No. of studies HR(95%CI) P Heterogeneity I2(%) Ph
Population
China 3 2.38[1.17- 4.84] 0.017 80.4 0.006
Japan 5 2.00[1.54-2.61] <0.0001 15.6 0.315
Sample size
>140 4 1.67[1.37- 2.03] <0.0001 0 0.558
≤140 4 3.23[2.07- 5.06] <0.0001 27.3 0.248
Study quality
High 3 4.08[2.55- 6.51] <0.0001 0 0.587
Low 5 1.70[1.40- 2.05] <0.0001 0 0.662
Treatment method
Surgical 7 2.18[1.59- 2.98] <0.0001 60.1 0.020
Palliative care 1 2.02[1.08- 3.80] 0.028
Cut-off
2 4 2.11[1.37- 3.26] 0.001 48.1 0.123
3 3 2.43[1.24- 4.77] 0.010 77.0 0.013
4 1 1.91[1.31- 2.76] 0.001
Tumor type
Mixed 2 1.65[1.29-2.10] <0.0001 4.3 0.307
CCA 5 2.38[1.57-3.61] <0.0001 57.6 0.051
AVC 1 3.98[1.49-10.64] 0.006