Figure 3.

Forest plot showing the summary relative risk ratio of locoregional recurrence in breast cancer patients with 1–3 positive axillary lymph nodes undergoing post-mastectomy radiotherapy. This forest plot outlines the studies included in the locoregional recurrence analysis and demonstrates a summary relative risk ratio of 0.30, therefore favouring the intervention by indicating that post-mastectomy radiotherapy reduces the risk of locoregional recurrence in these patients. CI, confidence interval.