an increasing trendp = 0.0618
The 5-year overall survival rates were 86.47% and 75.92% in the adjuvant WBRT and non-adjuvant WBRT groups, respectively ( Figure 1 ); the OS rate was associated with an increasing trend in the adjuvant WBRT group (log-rank test, p = 0.0618) compared with the non-WBRT group.