Calculation of effectiveness
Terminal node health state | Formula | Reasoning |
---|---|---|
Healthy, untreated | ![]() | Assuming screening occurs at 18 months and health state is experienced for all years following test (using life expectancy of 82 yr (37)) |
Healthy, after treatment | ![]() | Assumes there is some decrease in utility for 4 mo during iron supplementation (4/12 mo = 0.33) |
Poor functional outcomes, untreated | ![]() | Assumes that iron deficiency is not detected and treated, and resulting health state is experienced for all years following test |
Poor functional outcomes, after treatment | ![]() | Assumes that iron deficiency is not treated despite supplementation, and this health state experiences both decreased utilities from poor functional outcomes, and short-term decrease in utility due to supplementation |
Note: QALY = quality-adjusted life year.