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Table 2 Subgroup analysis of the prognosis of extrahepatic cholangiocarcinoma at early stage

From: Does high-grade dysplasia/carcinoma in situ of the biliary duct margin affect the prognosis of extrahepatic cholangiocarcinoma? A meta-analysis

SubgroupStudies includedOverall survival
ParticipantsEffect modelOR (95% CI)P
pN0M0, HGD/CIS vs. R0
1 year4354Fixed0.54 (0.21–1.36)0.19
2 years4354Fixed0.75 (0.35–1.58)0.44
3 years4354Fixed0.74 (0.40–1.37)0.34
pN0M0, HGD/CIS vs. INV
1 year485Fixed3.47 (1.09–11.02)0.03
2 years485Fixed9.12 (2.98–27.93)< 0.001
3 years485Fixed9.17 (2.95–28.55)< 0.001
  1. P value is statistically significant