The reliability of quantitative sensory testing (QST) is affected by the error attributable to both test occasion and rater (examiner) and the interactions between them.
Pollak further found that the error attributable to the practitioner cannot be quantified because examiners decide subjectively whether a pair of prints match--as both supporters and critics of the method agree.
As an example, the evolution of the error attributable to the initially estimated volatility ( ef V ) was determined for three cases: for C V = 0.1 (variant 1), C V = 0.2 (variant 2), and C V = 0.3 (variant 3), during τ = 1, 2, …, 15.
Although we have previously shown that variation in the differential blood cell count can affect blood-derived mitochondrial DNA copy number (Pyle et al., 2010), the 3-fold increase in mitochondrial DNA content detected in our MFN2 cohort was substantially greater than the error attributable to this possible confounding factor.
Moreover, the theory of errors attributable to the German mathematician Carl Friedrich Gauss allows one to make a quantitative estimate of the reliability of the result, as expressed in the table by the conventional symbol ±.
Uncertainty and errors within regional models are introduced by the global model used for the boundary conditions of the edge of the regional model, as well as errors attributable to the regional model itself.
In order to better understand the degree and sources of errors attributable to the measurement itself, independent of any biological variability among the samples, we assayed aliquots of the same four breast tumor RNAs in all three laboratories.
They made on average 1.45 (OFF: 0.86) perseverative errors (i.e. errors attributable to the fact that the subject incorrectly used the same classification rule after negative feedback) and 0.78 (OFF: 1.00) non-perseverative errors (loss of the rule) per WCST trial bloc.
Each percentage is the apportionment of total classification errors attributable to each class, obtained over the 920 trials used to estimate the 632+ error.
The test sessions were conducted between 10 a.m. and 2 p.m. to avoid errors attributable to the diurnal variation of motor activity.
