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Table 2 Estimated versus measured blood glucose at the final laboratory session (week 7).

From: Training to estimate blood glucose and to form associations with initial hunger

  N Estimated blood glucose Measured blood glucose Difference (Estimated - Measured) Estimation error (%)
All Trained 64 84.9 ± 7.81 87.2 ± 7.92 -2.3 ± 4.73 4.1 ± 3.1 (4.7 ± 3.6)4
Hungry Trained5 18 78.1 ± 6.7 80.1 ± 6.3 -2.0 ± 2.53 2.6 ± 1.9 (3.2 ± 2.4)
Not-hungry Trained6 46 87.6 ± 6.5 90.0 ± 6.67 -2.4 ± 5.33 4.8 ± 3.2 (5.4 ± 3.6)
All Controls 72 78.5 ± 11.6 89.8 ± 10.58 -11.3 ± 14.89,10 15.4 ± 10.4 (17.1 ± 11.5)
Hungry Controls5 4211 75.9 ± 9.8 89.2 ± 10.27 -13.3 ± 11.912,13 14.9 ± 9.8 (16.7 ± 11.0)
Not-hungry Controls6 30 82.2 ± 12.9 90.6 ± 10.9 -8.4 ± 17.914,15 16.1 ± 11.3 (17.8 ± 12.4)
  1. 1Mean ± SD, mg/dL. Subjects stated to be either hungry or not hungry and they estimated their blood glucose at the hospital laboratory before breakfast.
  2. 2Measurements performed by hospital autoanalyzer.
  3. 3Estimated less measured blood glucose, significant at p < 0.01.
  4. 4Absolute value of difference between estimated and measured blood glucose and, inside parenthesis, % of measurement.
  5. 5Subjects who declared feeling hungry at the laboratory investigative session. The agreement limits (mean difference ± 2SD) were -7.0 to +3.0 mg/dL and -41.3 to +18.6 mg/dL in trained and control groups, respectively.
  6. 6Subjects reporting to be not hungry at the laboratory investigative session. The agreement limits were -12.9 to +8.2 mg/dL and -45.0 to +28.0 mg/dL in trained and control groups, respectively.
  7. 7p < 0.01 vs trained hungry subjects in the respective column.
  8. 8p = 0.08, not significant, vs all 64 trained subjects.
  9. 9F = 10.6, p = 0.0001 on the difference between estimated and measured blood glucose.
  10. 10t-test p = 0.0001 vs all trained subjects.
  11. 11p = 0.001 vs number of hungry subjects in the trained group.
  12. 12F = 24.6, p = 0.0001 on the difference between estimated and measured blood glucose.
  13. 13t test p = 0.0001 vs trained hungry subjects.
  14. 14F = 11.9, p = 0.0001 on the difference between estimated and measured blood glucose.
  15. 15t test p = 0.07 vs trained not-hungry subjects.