Figure 3. Tumor Location (Top) and Histologic Type (Bottom) for the Risk of Occult Nodal Metastases. Of Note, 1 Study was Excluded from the Pooled Risk Ratio Computation Regarding Histologic Subtypes for the Risk of Occult Nodal Metastasis due to Having No False-Negative Event in Nonadenocarcinoma Subgroup.
Abbreviations: ES = effect size; FN = false negative.