Egger’s tests for possible publication bias of OS (A), PFS (B), DMFS (C), LRRFS (D).

<p>Egger’s tests for possible publication bias of OS (A), PFS (B), DMFS (C), LRRFS (D).</p

Grade 3–4 acute adverse events of CCRT versus IMRT alone for stage II nasopharyngeal carcinoma.

<p>Grade 3–4 acute adverse events of CCRT versus IMRT alone for stage II nasopharyngeal carcinoma.</p

Forest plot and meta-analysis of OS (A) and LRRFS (B).

<p>Forest plot and meta-analysis of OS (A) and LRRFS (B).</p

Flow chart showing inclusion and exclusion of trials.

<p>Flow chart showing inclusion and exclusion of trials.</p

Sensitivity analysis for the comparison of CCRT with IMRT alone.

<p>Sensitivity analysis for the comparison of CCRT with IMRT alone.</p

Main characteristics of all the included studies.

<p>Main characteristics of all the included studies.</p