By intervening early, SBIRT saves lives and money and is consistent with overall support for patient wellness. Late-stage intervention and substance abuse treatment is expensive, and the patient has often developed comorbid health conditions.
Example 1: Even Cash Inflows: Calculate the net present value of a project which requires an initial investment of $243,000 and it is expected to generate a cash inflow of $50,000 each month for 12 months. Assume that the salvage value of the project is zero. The target rate of return is 12% per annum. Solution.
To calculate the negative predictive value (NPV), divide TN by (TN+FN). In the case above, that would be 810/(810+5)= 99.4%. The negative predictive value tells us how likely someone is to not have the characteristic if the test is negative.