1. A method for determining the oxygen saturation of blood of a patient comprising: estimating a physiologic parameter from an electronic signal; calculating one or more signal quality metrics of the electronic signal; inputting information into a neural network, wherein said input information includes one or more estimates of the physiologic parameter and at least one signal quality metric; calculating with the neural network at least one output datum, wherein the output datum is representative of the oxygen saturation of the blood of the patient; and receiving the output datum from the neural network.