(Abbreviation: a Spearman correlation
coefficient)
(Hint: Both p and r values must be considered during analysis of
the relationship between a variable and the correlation coefficients
must be interpreted as follows: 0.0-0.30: negligible; 0.31-0.50: low;
0.51-0.70: moderate; 0.71-0.90: high; 0.91-1.00: very high)
Table 4. The performances
of clinical variables for the estimation of survival.