Figure 2.

Receiver operating characteristic curve. The receiver operating characteristic curve for our cohort with gastric adenocarcinoma was plotted using immunohistochemistry scores of homeobox D4 protein. When the tissue homeobox D4 protein immunohistochemistry score was 7.0 or greater, the sensitivity was 87.4%, and the specificity was 53.6%. By evaluating the Youden index, we chose 7.0 as the cutoff score for the immunohistochemistry results, and thereby dividing our cohort into low-homeobox D4 group (immunohistochemistry score <7) and high-homeobox D4 group (immunohistochemistry score ≥7)