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Correlation between miR-21 expression and clinical characteristics
| 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 |
