We have not found it possible to determine how much of the variation in the recorded data is attributable to varying selection in clinical practice, the different biology of tumours according to histology, tumour site or variation among patients.
Much of the improvement in the latest economic data is attributable to more consumer spending and a healthier housing market, two mainstays of a sustainable recovery.
Difference between the mtDNA and nuclear data is attributable to the former having a slower evolutionary rate [ 51, 77], ¼ effective the population size, and being more influenced by population bottlenecks [ 50].
The high FN rate of microarray data is attributable to the fact that the cutoff value of 200 [ 19] for defining positive expression is quite conservative.
Greater scatter in the airborne data was attributable to the difference in scale of the ground and aerial measurements (i.e., small area plant samples against whole-plot means from imagery).
We used principal variation component analysis (PVCA)[10], [20] to measure how much variation in the expression data was attributable to batch effects.
However, when analyzing taxa that have deeper coverage, an average of 16 23% of the sites are missing from any given sample, suggesting a substantial amount of missing data are attributable to the biology of presence/absence variation in the maize genome (Springer et al. 2009).
At the end of the follow-up period, there were complete results from the NEADL questionnaire for 27 out of 33 patients in group 1 and for 21 out of 27 patients in group 2. Missing data were attributable to deaths (nine patients) or practical difficulties in obtaining the information (three patients).
With the use of ratios from (Sherbourne 2009) and (Mendelsohn et al. 2006), the data were disaggregated into those attributable to commercial land livestock, communal land livestock, commercial land crop production and communal land crop production.
The greatest variation in gene expression in the present data set is attributable to the distinction between IBC and non-IBC.
