Table 4 Incremental cost-utility ratios of various screening scenarios (discount = 1.5%) per 1000 women compared to no screening*

Scenario	Modelled overall health care system cost, $	Modelled life-years	Modelled QALYs	Health care system incremental cost, $	Incremental QALYs	Incremental cost-utility ratio, $/QALY
No screening	1 965 899	30 602	24 998
Triennial 50-69 yr	3 368 225	30 648	25 036	1 402 326	38	36 981
Triennial 50-74 yr	3 642 494	30 653	25 039	274 269		Weakly dominated
Biennial 50-69 yr	3 835 726	30 662	25 048	467 501	12	38 142
Biennial 50-74 yr	4 217 275	30 669	25 053	381 549		Dominated
Annual 50-69 yr	5 250 458	30 688	25 069	1 414 732	21	65 944
Annual 50-74 yr	5 789 126	30 694	25 075	538 668		Weakly dominated
Annual 40-49 yr, biennial 50-69 yr	6 072 758	30 697	25 078	283 631		Weakly dominated
Annual 40-49 yr, biennial 50-74 yr	6 444 999	30 703	25 083	372 241		Weakly dominated
Annual 40-69 yr	7 516 630	30 721	25 098	2 266 172	29	79 266
Annual 40-74 yr	8 051 766	30 727	25 103	535 136	5	110 994

Note: QALY = quality-adjusted life-year.