Consequently, given the variance in methods used in prior avian metabolic studies cognizance of this is required when designing and implementing avian thermoregulatory physiological measurements using respirometry, particularly if data are later used for comparative allometric studies.
This suggests that any elevation in CSF lactate concentration above normal for the assay used could be employed as a diagnostic marker despite the difference in cut-off values caused by variance in methods, instruments and hospital laboratories.
In addition, variance in the laboratory method and criteria of methylation could be a reason for the inconsistency of these results of the studies.
These differences can be caused by variances in laboratory methods, biological materials, psychiatric diagnosis and the severity of psychopathology in patients and geographical regions.
As the Bcd variance can be exaggerated in the data normalized by the basic method, we considered the same ensemble of Bcd profiles but normalized by the alternative artificial normalization method, which minimizes variance in the ensemble (see Methods).
Variances in methods, doses, and types of OC, as well as population differences, have been proposed to explain some of these controversies.
Variance estimates were calculated for each of 15,757 probes at the inter-experiment, inter-run, and inter-chip level using a nested analysis of variance described in methods.
Using the nested analysis of variance described in methods, 60% (mean value) of the variability was due to that between runs and less than 40% to that within each run.
In addition to correlating expression values, we calculated variance estimates for each of the 15,781 Ensembl genes probed by the two platforms at the inter-sample, inter-platform, inter-laboratory, and inter-chip levels using a nested analysis of variance described in methods.
The smallest average percentage error was achieved by method 4 when using coronal ICAs and the smallest variance in percentage error by method 4 when using sagittal ICAs.
