Table 4. RMST at 5 years for treatment failure according to prognostic group.

	RMST Kaplan–Meier years (95% CI)	RMST FP model
CTC and mM negative N = 38	4.6 years (4.2–5.0 years)	4.7 years
CTC negative and mM positive N = 17	4.0 years (3.4–4.7 years)	4.0 years
CTC positive	1.5 years (1.0–2.0 years)	1.4 years

CTC = circulating tumour cells; mM = micrometastasis, RMST = restricted mean survival time; FP = flexible parameter.