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Table 3 Thresholds and corresponding test characteristics of 3 different hand-held meters to detect hyperglycemia in capillary and coccygeal blood based on Receiver Operating characteristics (ROC) analysis using a laboratory plasma glucose concentration of ≥ 60 mg/dL as reference

From: Glucose concentration in capillary blood of dairy cows obtained by a minimally invasive lancet technique and determined with three different hand-held devices

Devicea Capillary blood Coccygeal blood
  Optimized device thresholdb [mg/dL] AUCc [%(CI95 d)] See [%(CI95)] Spf [%(CI95)] Youden-Indexg Optimized device thresholdc [mg/dL] AUC [%(CI95)] Se [%(CI95)] Sp [%(CI95)] Youden-Index
FSP 43 87.4 (82.5–91.3) 76.4 (66.2–84.8) 84.1 (77.3–89.5) 0.61 59 91.7 (87.5–94.9) 75.3 (65–83.8) 91.4 (85.7–95.3) 0.67
GLX 49 93.4 (89.5–96.2) 92.1 (84.5–96.8) 85.4 (78.8–90.6) 0.78 49 85.2 (80.1–89.5) 85.4 (76.3–92) 69.5 (61.5–76.8) 0.55
WGC 95 70.5 (64.3–76.3) 39.3 (29.1–50.3) 92.1 (86.5–95.8) 0.31 94 70.0 (63.8–75.7) 55.1 (44.1–65.6) 84.8 (78–90.1) 0.40
  1. aFSP: FreeStyle Precision, (Abbott GmbH & Co. KG, Wiesbaden, Germany), GLX: GlucoMen LX Plus (A. Menarini GmbH, Vienna, Austria), WGC: WellionVet GLUCO CALEA (MED TRUST Handelsges.m.b.H, Marz, Austria)
  2. bbased on Receiver Operating Characteristics (ROC) analyses
  3. cAUC: area under the receiver operating characteristics (ROC) curve
  4. dCI95: 95 % confidence interval
  5. eSe: sensitivity
  6. fSp; specificity
  7. gYouden-Index = (Se + Sp – 1)