a trend towards significancep < 0.10
Multivariate Cox regression analyses with a backwards selection criterion of p < 0.10 were also performed, including: menopausal status (premenopausal, postmenopausal), performance status (0, 1–2), estrogen receptor (ER)/progesterone receptor (PR) status (negative, positive), number of metastatic sites (1–2, 3), as well as each marker that was found to be a significant prognosticator or revealed a trend towards significance in the univariate analyses (p < 0.10).