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Table 3 Correlation between miR-21 expression and clinical characteristics

From: Prognostic value of microRNA-21 in pancreatic ductal adenocarcinoma: a meta-analysis

Variables Number of studies Model OR(95 % CI), P value Heterogeneity (I2, P-value)
Gender (male vs. female) 4 Fixed 1.05(0.75–1.47), 0.78 0.0 %, 1.00
Lymph node metastasis (positive vs. negative) 4 Fixed 1.45(1.02–2.06),0.04 0.0 %, 0.70
Vascular infiltration (yes vs. no) 3 Fixed 0.91(0.47–1.76),0.78 0.0 %,0.79
Neural infiltration (yes vs. no) 3 Fixed 1.30(0.80–2.10),0.29 0.0 %,0.67