Table 5. Sensitivity analysis; assuming 4y treatment effect duration (instead of 8y) - probabilistic.

	Trastuzumab		No trastuzumab		Increment		ICER
	Costs	QALYs	Costs	QALYs	Costs	QALYs
Real world scenario	€ 242,295	13.938	€ 226,954	13.554	€ 15,341	0.384	€ 39,934
Guideline scenario	€ 226,014	13.545	€ 210,056	13.142	€ 15,957	0.402	€ 39,655
Trial scenario	€ 253,494	14.098	€ 249,955	13.547	€ 3,539	0.552	€ 6,412