nearly significantP = 0.06
There were 4 studies comparing odds ratios (ORs) between radiation dose > 50.4/51 Gy with ≤ 50.4/51 Gy, and the results showed that the HD group (> 50.4/51 Gy) had a nearly significant association with higher locoregional control (pooled OR = 0.71, 95% CI = 0.49–1.02, P = 0.06, Figure 5A ).