Table 2. The numerical data (training cohort) used for developing the scores for each factor of nomogram.

HR, hazard ratio; CI, confidence interval.

^a)Grade for differentiation of tumor cells: I–II, well differentiated and moderately differentiated; III, poorly differentiated; IV, undifferentiated/anaplastic. ^b)None, unknown, and refused. ^c)A, adrenal gland; B, soft tissue including heart; C, retroperitoneum; D, mediastinum and other respiratory organs; E, other.