“…For 10 of these studies, we calculated the specificity and the diagnostic OR. 72,73,80,87,89,91,93,[99][100][101] In 8 papers, both the sensitivity and specificity of recognition were presented. 75,77,[103][104][105][106][107][108] Eleven papers reported other measures (such as positive predictive value, agreement expressed as percentage or kappa correlation coefficient, and identification index), 70,76,77,79,103,104,106,107,109,110 and we calculated the sensitivity, specificity, and OR of recognition using data presented in 5 of them.…”