Synechiae Risk Calculator

function calculation() { var o = document.getElementById("result"); var surg = document.getElementById("surgery"); var nsr = document.getElementById("nsr"); var concha = document.getElementById("concha"); var LM = document.getElementById("LM"); var gender = document.getElementById("gender"); o.value = (1/(1+ Math.exp(-1*((-1.916) + 0.555*parseFloat(nsr.value) + 0.268*parseFloat(surg.value) + 0.300*parseFloat(concha.value) - 0.150*parseFloat(gender.value) + 0.025*parseFloat(LM.value)))))*100; }

predicted probability (P) = 1/(1+e^(-y)), where y = [-1.916 + (0.555*nasal septal reconstruction) + (0.268*primary-FESS) + (0.300*concha bullosa) – (0.150*gender) + (0.025*total bilateral Lund-Mackay CT score)]

Result: %