Fig. 1From: A retrospective study on transabdominal ultrasound measurements of the rumen wall thickness to evaluate chronic rumen acidosis in beef cattleReceiver operating characteristic (ROC) curve analysis of the rumen wall thickness for detecting chronic acidosis. The best cut-off value is > 8.2 mm, (area under the ROC curve of 0.88: P < 0.0001; 95% c.i. 0.83 to 0.98; sensitivity 90%; specificity 79%; positive likelihood ratio 4.34; negative likelihood ratio 0.13). criterion: Youden indexBack to article page