Relation between time to diagnosis (TtD) and clinical and tumor characteristics.

§Degree of significance of nonparametric test (Mann Whitney or Kruskal-Wallis) of the distribution of time to diagnosis.¤Odd Ratio [95% confidence interval].±Degree of significance of the chi-2 test or Fisher's exact test.¤¤adjusted Odds Ratio [95% confidence interval].‡Degree of significance of the coefficient of the logistic regression test.*One patient died within 24 h of surgery, before spinal MRI, and was excluded from the analysis.**The data concerning psychological signs have been previously published [25].