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Table 2 Results of subgroup and meta-regression analyses

From: Prognostic implication and functional exploration for microRNA-20a as a molecular biomarker of gastrointestinal cancer

Subgroup Studies HR (95%CI) P-value Heterogeneity (I2) Pheterogeneity Meta-regression (P-value)
Ethnicity       P = 0.776
 Asian 9 1.46 (1.25–1.71) P < 0.001 91.5% P < 0.001  
 Non-Asian 3 1.43 (0.92–2.23) P = 0.11 74.1% P = 0.021  
Cancer type       P = 0.189
 Gastric cancer 7 1.25 (1.10–1.40) P = 0.006 86.4% P < 0.001  
 Colorectal cancer 4 2.71 (1.33–5.54) P < 0.001 84.2% P < 0.001  
Sample source       P = 0.851
 Blood 5 1.65 (1.14–2.37) P = 0.008 87.1% P < 0.001  
 Tissue 7 1.29 (1.11–1.50) P = 0.001 90.2% P < 0.001  
Sample size       P = 0.271
 Large(>median) 5 2.37 (1.29–4.33) P = 0.005 86.2% P < 0.001  
 Small(<median) 6 1.25 (1.10–1.43) P = 0.001 80.4% P < 0.001