Table 3.

Cost-effectiveness results per treated patient (n = approximately 1.3 million)

Variable	Mean	Standard deviation	Lower 95% CI	Upper 95% CI
Intervention costs
Screening costs	£126	48	54	240
Treatment costs	£162	48	82	270
Total lifetime costs
Dementia lifetime costs	£6891	3820	1928	16,602
Total costs with vitamins per treated person	£7179	3820	2217	16,871
Total costs without vitamins per (un)treated person	£7681	4200	2129	18,290
Incremental lifetime costs	−£502	683	−2302	245
Total lifetime QALYs
Total QALYs with vitamins per treated person	0.023	0.018	0.002	0.070
Total QALYs without vitamins per (un)treated person	0.015	0.012	0.001	0.045
Incremental QALYs per treated person	0.008	0.007	0.001	0.026
Incremental cost-effectiveness ratio	−£60,021

Abbreviation: QALYs, quality-adjusted life years.