When compared to non-AVFT, our data showed that the significant risk factors were AVG (pooled OR = 6.28, 95% CI = 1.79–22.02, p = 0.004, I2 = 87%), age (pooled OR = 1.06, 95% CI = 1.00–1.13, p = 0.05, I2 = 98%), female sex (pooled OR = 2.62, 95% CI = 2.56–2.69, p < 0.00001, I2 = 0%), C-reactive protein (pooled OR)