Table 6.

 Cost effectiveness of remediating existing homes for total population and for households consisting entirely of never smokers or entirely of current cigarette smokers, based on inviting existing households in areas with a mean indoor radon concentration of 60 Bq/m³ to measure, and remediation advised if measurement is above an action level of 100 Bq/m³. Costs are in pounds sterling

Description	Total population*	Never smokers only in household†	Current cigarette smokers only in household‡
Lifetime cumulative risk of death from lung cancer (% per person)
Pre-remediation	7.13	0.94	28.52
Post-remediation	6.09	0.80	24.81
Health gain per 1000 households remediating
Lung cancer cases averted	25.1	3.4	89.2
Total QALYs gained§	136.3	20.2	352.3
Resource use and costs per household remediating§
Invitation, measurement, and remediation costs	3414	3414	3414
NHS lung cancer treatment costs averted	126	17	447
Other NHS costs incurred by added life expectancy	774	110	1870
Net cost—societal	4062	3506	4836
Cost effectiveness§
Cost per QALY gained—societal:	29 789	173 720	13 727
To NHS	4752	4590	4037
To homeowners, Health Protection Agency, and government departments	25 037	169 130	9690

QALY=quality adjusted life year.

*Calculated using age specific and sex specific lung cancer death rates for entire UK population.

†Calculated using age specific and sex specific lung cancer death rates for a population of lifelong non-smokers.¹⁹

‡Calculated using age specific and sex specific deaths from lung cancer for current cigarette smokers in UK. Rates were derived from observed age specific and sex specific lung cancer death rates for 2006 for the total UK population, estimates of lung cancer death rates for lifelong non-smokers,¹⁹ estimates of relative risks for UK men with differing smoking habits compared with continuing cigarette smokers,²⁰ and estimates of proportion of population according to smoking status for categories of age and sex.^{21 31}

§Discounted.