Fig. 3From: The roles of lumbar load thresholds in cumulative lifting exposure to predict disk protrusion in an Asian populationReceiver-operating characteristic curves for the prediction of L4-S1 disc protrusion in male participants by models of different threshold of lifting load. Model 0: AUC (95% CI) = 0.65 (0.61Â -Â 0.71). P = 0.0001. Model 3000: AUC (95% CI) = 0.69 (0.63 -Â 0.74). P = 0.0001. Model 3400: AUC (95% CI) = 0.67 (0.61Â -Â 0.73). P = 0.0001Back to article page