Association between MPV level and clinicopathological parameters
| Clinical features | No of studies | No of patients | Model | OR (95% CI) | P value | Heterogeneity | |
| I2, % | PH value | ||||||
| Age (older vs younger) | 13 | 2968 | Fixed | 0.96 (0.90 to1.02) | 0.155 | 25.40 | 0.188 |
| Sex (male vs female) | 17 | 4077 | Fixed | 1.04 (1.00 to 1.09) | 0.077 | 0.00 | 0.533 |
| Depth of invasion (T1+T2 vs T3+T4) | 10 | 2420 | Random | 0.90 (0.77 to 1.04) | 0.149 | 78.10 | 0 |
| Tumour stage (I/II vs III/IV) | 11 | 2425 | Random | 0.91 (0.78 to 1.07) | 0.257 | 78.90 | 0 |
MPV, mean platelet volume; PH, p values of Q test for heterogeneity test.