borderline significantP = 0.022
Spearman correlation analysis revealed that CD15 expression was significantly and negatively correlated with the proportion of NK cells among peripheral blood nucleated cells (Spearman r = -0.380, P = 0.004) and showed a borderline significant negative correlation with the percentage of NK cells relative to total lymphocytes (Spearman r = -0.304, P = 0.022).