Forest plots of RRs for the association between different intrinsic subtypes and distant disease-free survival in pT1a-bN0M0 breast cancer patients.

<p>The size of the square box is proportional to the weight that each study contributes in the meta-analysis. The overall estimate and confidence interval are marked by a diamond. Symbols on the right of the solid line indicate RR>1 and symbols on the left of the solid line indicate RR<1. All the combined RR is calculated by the fixed-effects model. <b>(A) Comparing HER2+ and HR+/HER2- breast cancer. (B) Comparing HER2+ and triple negative breast cancer.</b>