Fig. 2From: Estimation of the ideal correction of lumbar lordosis to prevent reoperation for symptomatic adjacent segment disease after lumbar fusion in older peopleLogistic regression and receiver operating characteristic curve analysis show a cut-off value for postoperative change in lumbar lordosis (△LL) of 11.7° at which the classification based on △LL yields a sensitivity of 58% and specificity of 86%. The area under the curve is 0.703, with a confidence interval of 0.608 to 0.798Back to article page