Assessment Results (Enter Test and Cut Predictive Point) Fall No Fall Total Values Cell a Cell b a + b Positive (patient fell and test was +) (patient did not fall but test was +) Positive Test Result Predictive True + False + Value = a/a+b Cell c Cell d c + d Negative (patient fell but test was -) (patient did not fall and test was -) Negative Test Result Predictive False - True - Value = d/c+d a + c b + d Total Total Sensitivity = a/a+c Specificity = d/b+d
Assessment Results (Enter Test and Cut Point) Fall No Fall Total Predictive Values Positive Test Result Cell a (patient fell and test was +) True + Cell b (patient did not fall but test was +) False + a + b Positive Predictive Value = a/a+b Negative Test Result Cell c (patient fell but test was -) False - Cell d (patient did not fall and test was -) True - c + d Negative Predictive Value = d/c+d Total a + c b + d Total Sensitivity = a/a+c Specificity = d/b+d
tally-sheet-for-calculating-predictive-test-values.docx