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Table 4 Prediction intervals for WB from capillary DBS values of 4 %, 7 %, 7.5 % and 10 %, obtained through linear regression models

From: The use of dried blood spot sampling for the measurement of HbA1c: a cross-sectional study

  capDBS 4 % capDBS 7 % capDBS 7.5 % capDBS 10 % MSE Adjusted R2
pWB Lower 95 % CI Upper 95 % CI pWB Lower 95 % CI Upper 95 % CI pWB Lower 95 % CI Upper 95 % CI pWB Lower 95 % CI Upper 95 % CI
D0 3.84 3.36 4.32 6.76 6.30 7.23 7.25 6.78 7.72 9.69 9.20 10.18 0.0554 0.9463
D4 3.86 3.22 4.51 6.33 5.70 6.95 6.74 6.11 7.36 8.79 8.14 9.43 0.0992 0.9064
D7 3.97 3.26 4.67 6.37 5.68 7.06 6.77 6.08 7.46 8.77 8.06 9.49 0.1247 0.8267
D14 4.48 3.20 5.76 6.33 5.08 7.59 6.64 5.38 7.90 8.19 6.89 9.48 0.3905 0.5268
  1. Note: pWB = predicted whole blood; capDBS = capillary dried blood spot; MSE: mean standard error; CI: confidence interval