Table 2. Time-to event outcomes—3-year probabilities and median times with 95% confidence limits.

Time-to event outcome	Invasive mediastinal nodal staging	3-year probability (95% CI)	Median in months (95% CI)	P value
Nodal failure-free survival	Yes	0.61 (0.49–0.72)	41 [35–62]	0.73
	No	0.55 (0.43–0.66)	40 [29–64]
Nodal failure	Yes	0.84 (0.72–0.91)	–	0.1
	No	0.69 (0.56–0.79)	–
Any failure-free survival	Yes	0.48 (0.36–0.60)	36 [24–41]	0.6
	No	0.45 (0.33–0.57)	33 [19–53]
Any failure	Yes	0.62 (0.48–0.73)	48 (36, ٭)	0.95
	No	0.54 (0.41–0.66)	61 (31, ٭)
Distant failure-free survival	Yes	0.63 (0.51–0.74)	41 [36, 50]	0.63
	No	0.63 (0.51–0.73)	53 [39, 70]
Distant failure	Yes	0.83 (0.71–0.74)	–	0.39
	No	0.83 (0.71–0.73)	–
Overall survival	Yes	0.65 (0.52–0.75)	43 [36, 62]	0.65
	No	0.67 (0.54–0.76)	63 [39, 70]

٭, empty cells not estimable; Nodal Failure: represents freedom from nodal failure; Any Failure: represents freedom from any failure; Distant Failure: represents freedom from distant failure.