Skip to main content

Table 3 Receiver Operator Curve analysis of the predictive value of BMI for impaired fasting glucose (IFG) and diabetes mellitus (DM) in categories of gender and age in PTB patients

From: Association between body mass index and diabetes mellitus in tuberculosis patients in China: a community based cross-sectional study

   SE AUC (95%CI) p-value Sensitivity Specificity PPV NPV PLR NLR Youden’s index Associated criterion
IFG Total 0.01 0.56 (0.53–0.58) <0.001 0.61 0.48 0.70 0.38 1.17 0.81 0.09 22.22
Age
18–30 years 0.02 0.54 (0.49–0.58) 0.104 -- -- -- -- -- -- -- --
31–45 years 0.02 0.53 (0.49–0.56) 0.124 -- -- -- -- -- -- -- --
Gender
Male 0.02 0.57 (0.54–0.60) <0.001 0.49 0.64 0.73 0.38 1.36 0.80 0.13 22.23
Female 0.02 0.53 (0.48–0.58) 0.188        -- --
DM Total 0.03 0.59 (0.53–0.66) 0.002 0.60 0.62 0.77 0.42 1.58 0.65 0.22 22.34
Age
18–30 years 0.07 0.50 (0.37–0.63) 0.977 -- -- -- -- -- -- -- --
31–45 years 0.04 0.58 (0.50–0.65) 0.024 0.64 0.56 0.78 0.39 1.45 0.64 0.20 22.53
Gender
Male 0.04 0.61 (0.53–0.70) 0.004 0.63 0.62 0.78 0.43 1.66 0.60 0.25 22.41
Female 0.05 0.56 (0.46–0.67) 0.184 -- -- -- -- -- -- -- --
  1. PPV positive predictive value, NPV negative predictive value, PLR positive likelihood ratio, NLR negative likelihood ratio, SE Standard Error, AUC area under the curve; Youden’s index = Sensitivity + Specificity − 1; -- When p > 0.05, there was no appropriate cut-off by ROC analysis, so the Youden’s index and associated criterion could not be shown