For each variance component that is included in the estimation procedures, variability figures have to be specified.
Initially, we wished to assess the degree of inter-animal and inter-procedure variability between the ST and ST + HS experimental groups.
The influence of the presence of a written procedure on variability was tested with the use of Student t-tests; for each topic, a mean IQV for questions relative to the studied topic was evaluated.
Standardization of this measurement procedure reduces variability of ankle moment and angle measurements and hence increases the sensitivity to measure changes in ROM.
We conducted bootstrap simulations (Efron 1979) to evaluate the impact of the model selection procedure on variability in the regression parameters for the food predictors.
We used a bootstrap approach to evaluate the impact of this model selection procedure on variability in the regression parameters for the food predictors.
When fewer potential predictors are retained after the first step of the bootstrap model selection procedure, this variability seemed to decrease and model selection frequency increased.
Despite the resolution advantages of in vitro imaging studies, the invasiveness of the procedure, inherent variability in specimen collection [ 28, 29], and the limited correlation to bone quality at clinically relevant sites for fragility fracture (proximal femur, lumbar spine, distal radius) [ 35] are drawbacks to the clinical application of micro-CT.
This often imposes a time constraint on experimental procedures, adds variability to test conditions, and constitutes one of several important factors that has hindered widespread adoption and commercialization of PDMS-based microfluidic systems.
It should be mentioned here, however, that the use of various enrichment procedures, the variability in the millilitres of blood analysed, and the different methods used for the evaluation of the sensitivity and specificity of the assays, preclude firm conclusions to be drawn regarding the actual incidence of CTC detection.
However, we have no reason to suspect that a marker ascertainment procedure selecting for variability would have produced a systematic difference in variability between different motifs.
