Table 4. Incremental costs, QALYs, and ICER Length of evaluation Incremental Incremental Incremental ICER ICER costs to societal effectiveness payer societal payers costs (QALYS) perspective perspective 1 year No screening BMI screening $400 $200 0.002 $200,000 $100,000 BMI and ED screening $600 $100 0.005 $120,000 $20,000 5 years No screening BMI screening $400 ($100) 0.1414 $2,828.85 ($707.21) BMI and ED screening $600 ($700) 0.2874 $2,087.68 ($2,435.63) ICER = incremental cost-effectiveness ratio QALYs = Quality-adjusted life years `Payer costs here include ones borne by schools and the state government. societal costs include payer, medical care costs, and non-health costs