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Table 2 Spearman correlation test (two-tailed) for YB-1 and PRS4X expression (intensity) in EOC tissues and clinical data of patients

From: Low expression of the X-linked ribosomal protein S4 in human serous epithelial ovarian cancer is associated with a poor prognosis

   YB-1 RPS4X Ki67 % total Stage Age Residual disease
YB-1 correlation 1 0.391** 0.315** −0.016 0.004 −0.053
Sig. (2-tailed)   <0.001 <0.001 0.829 0.961 0.535
  N 186 186 180 186 186 137
RPS4X correlation 0.391** 1 0.224** −0.180* 0.041 −0.193*
Sig. (2-tailed) <0.001   0.002 0.013 0.557 0.022
  N 186 190 183 190 190 141
  1. * Correlation is significant at the 0.05 level (2-tailed).
  2. ** Correlation is significant at the 0.01 level (2-tailed).
  3. Spearman correlation test were performed on clinical data, total Ki67%, YB-1, and PRS4X staining intensity observed in the intra-epithelial area of ovarian tumors. Stage was evaluated according to the FIGO classification. “Sig.” in the table represents the P-value from Spearman correlation test. N is the number of cases included in the statistical analysis.