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Measuring accuracy: Conductivity measurement: The measuring accuracy of conductivity depends on the imposed voltage and resistance included in the electronic card. The precision of the imposed voltage is 1.28V +/- 0.04 thus possible errors +/- 3.1%.The precision of resistances is +/- 5 Ohms for the resistance spread out between 11 KOhms and 390 KOhms thus the maximum possible error +/- 0.4%.The precision is therefore: +/- 3.5 % to the maximum Statistical Risk analysis and biochemical values : The precision of statistical results depends of the type deviation σ, number of patients n and the average of all the measurements for each pathology X according to the formula: σn-1 / X (expressed in %). All the indicated statistical functional risks have specificity with a confidence interval which is calculated at 95%. This estimation is made by an external statistical program STATISTICA version 7.0 |
