Table 3.

 Discounted mean costs and effects per person, based on 10 year follow-up in Multicentre Aneurysm Screening Study (MASS)

Variable	Costs (£)	Survival (life days)
Control group	108	2743.0
Invited group	208	2747.8
Difference (95% CI)	100 (82 to 118)	4.8 (2.9 to 6.7)
Cost per life year gained (95% CI)	£7600 (£5100 to £13 000)

£1.00 (€1.18; $1.65).

Costs based on 2008-9 prices; discounting both costs and survival at 3.5% per year. Survival based on deaths related to abdominal aortic aneurysm, adjusted for other causes of deaths.