What assumptions were made when developing the model?
A number of assumptions were made when developing the model. The key assumptions are outlined below but are also discussed in more detail in Appendix O: Echocardiography plus specialist clinical assessment is 100% accurate. False negative patients are subsequently correctly diagnosed through 1 of 2 possible channels: A patient is hospitalised due their undiagnosed heart failure and are diagnosed during admission A patient re-presents to their GP within 6 months where the NT-proBNP test is repeated. The committee considered that after this we could assume that their NT- proBNP levels would be over 400pg/ml and therefore the patient would be referred for an echocardiogram and specialist clinical assessment and be correctly diagnosed. Chronic Heart Failure Diagnosing heart failure There is no mortality or morbidity benefit of treatment for HF-PEF patients.