Fig. 3.

The AUC of the ROC curve for early-stage indicators of bone turnover markers in LS-GO and LS-NG

The AUC of the ROC curve for (a) P1NP and (b) TRACP-5b at baseline, (c) P1NP and (d) TRACP-5b at 6 months, and (e) %P1NP and (f) %TRACP-5b at 6 months in LS-GO and LS-NG. AUC, area under the curve; GO, good outcome group; LS, lumbar spine; NG, non-good outcome group; P1NP, N-terminal propeptide of type 1 collagen; ROC, Receiver operating characteristic; TRACP-5b, tartrate-resistant acid phosphatase-5b.