The diagnostic value of serum cystatin C for evaluation of poor collateralization in different patients subgroups.

AUC, area under curve; BMI, body mass index; CI, confidence interval; IDI, integrated discrimination improvement; GFR, glomerular filtration rate; NRI, net reclassification improvement; OR, odds ratioa AUC,Se and Sp denote area under the curve for serum cystatin C in detecting poor collateralization in different patients subgroup and corresponding sensitivity and specificity with a cut-off point of 0.97 mg/Lb odds ratio (95% CI) of serum cystatin C ≥ 0.97 mg/L after adjustment for gender, age, BMI, diabetes, hypertension, dyslipidemia, multi-vessel disease and serum level of high sensitive C reactive protein (hsCRP).c Improvement of goodness-of-fit and predictive performance of additional inclusion of serum cystatin C ≥ 0.97 mg/L to the model with traditional variables including gender, age, BMI, diabetes, hypertension, dyslipidemia, multi-vessel disease and hsCRP*P **P #P ##P ###P The diagnostic value of serum cystatin C for evaluation of poor collateralization in different patients subgroups.