Table 2. EFS and OS comparisons by subsets within the cohort.

Variable	4-year EFS (%)	95% CI	p value	4-year OS (%)	95% CI	p value
Overall cohort	55.6	41.5–69.7		69.2	55.5–82.9
Localised	60	44.6–75.4		77.6	63.5–91.7
Metastatic	33.3	17.6–49		33.3	17.6–49
Group I–II	100			100
Group III	50	41–59		72	56.4–87.6
Group IV	33.3	2.6–64	0.01	33.3	2.6–64	0.007
Whole cohort
BP	48.5	29.3–67.7		63.8	44.2–83.4
Non- BP	64.2	44.4–83.8	0.37	69.3	49.7–88.9	0.8
Localised cohort
BP	52	32.4–71.6		71	51.4–90.6
Non- BP	70.1	50.5–89.7	0.22	87.5	71.8–100	0.49
Whole cohort
tsize < 6.45 cm	76.5	61.3–91.7		84.7	70.8–98.6
tsize ≥ 6.45 cm	30.6	11–50.2	0.003	49	25.5–72.5	0.006
Localised cohort
tsize < 6.45 cm	81.3	67.6–95		91.5	80.1–100
tsize > 6.45 cm	28	4.5–51.5	0.006	53.3	23.9–82.7	0.006