Figure 6From: A new adaptive testing algorithm for shortening health literacy assessments Sensitivity and specificity of the algorithm for Data set 2 with two class classification scheme. The top ROC curve shows the sensitivity and false positive rate on the numeracy data set at an entropy threshold of 0 (area under the curve = 0.96); the lower curve shows very little decrement in performance at an entropy of 0.6 (area under the curve = 0.93).Back to article page