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(a) The ROC curve for DKD. (b) The decision curve analysis for DKD. The overall predictive accuracy of FT3/FT4 for DKD was 0.65 (95% CI 0.62, 0.68); the overall predictive accuracy of FT4 for DKD was 0.57 (95% CI 0.54, 0.60); the overall predictive accuracy of FT3 of DKD was 0.61 (95% CI 0.58, 0.64).
