Table 1. Distribution of numerical variables of the study.

			Quartiles
			25	50	75
Variable	Mean±s.e.	Range	(median)
Patient age (years)	68.7±0.8	31.0–91.0	61.7	70.0	76.0
Tumour size (cm)	4.7±0.1	0.2–12.0	3.5	4.5	5.5
Follow-up (months; n=122)	37.2±2.5	1.0–132.0	10.0	35.5	54.7
DFS (months; n=122)	31.3±2.7	0.0–132.0	4.2	24.0	54.0
OS (months; n=122)	37.1±2.5	1.0–132.0	10.0	35.5	54.7

DFS=disease-free survival; OS=overall survival.