passages.id: split_6_test_2064_passage
passages.type: progene_text
passages.text: Although the MOA thresholds were higher than the 2AFC thresholds ( for normals mean +/- SE , 8.47 +/- 0.43 dL , P < 0.0000 ) , the best diagnostic concordance was at lower limens ( 75 % or 80 % correct ) of the fitted frequency of seeing curves .