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Table 2 Sensitivity (%) and Specificity (%) of the DIABECOLUX algorithm for various possible proportions (T2P) of type 2 diabetes in the diabetic population (%).

From: An algorithm to identify patients with treated type 2 diabetes using medico-administrative data

T2P TP TN T2P.POPtot (1-T2P).POPtot SE = TP/(T2P.POPtot) SPE = TN/((1-T2P).POPtot) PPV = TP/Pos NPV = TN/Neg
Min: 92.8% 20,581 1,110 20,581 1,597 100 69.5 97.7 100
93% [20,581-20,626] [1,067-1,110] 20,626 1,552 [99.8-100] [68.7-71.5] [97.7-97.9] [96.1-100]
94% [20,581-20,847] [845-1,110] 20,847 1,331 [98.7-100] [63.5-83.4] [97.7-99.0] [76.1-100]
95% [21,036-21,068] [731-1,109] 21,069 1,109 [99.8-100] [65.9-100] [99.8-100] [65.9-99.9]
96% [21,063-21,068] [731-887] 21,291 887 [98.9-99.0] [82.4-100] 100 [65.9-79.9]
Max: 96.7% 21,068 [731-732] 21,446 732 98.2 [99.9-100] 100 65.9
  1. T2P: Proportion of type 2 diabetes in the treated diabetic population; TP: True Positive; TN: True Negative; POPtot: Total diabetic population (POPtot = 22,178); SE: Sensitivity; SPE: Specificity; PPV: Positive Predictive Value; Pos: Population included (Pos = 21,068); NPV: Negative Predictive Value; Neg: Population excluded (Neg = 1,110).
  2. : pooled from age classes.