Estimating efficiency of an operating column has to be distinguished from that of a column being designed.
In contrast, DEA is a non-parametric approach to estimating efficiency; it was originally proposed by Charnes et al. (1978).
The Onfront® programme, which has been used for estimating efficiency in this paper, permits this calculation.
Multivariate adjustment was conducted on the propensity score-matched sample to increase estimating efficiency and to control any remaining imbalances in observed covariates that affected the outcome estimates.
Both measured and estimated efficiencies indicate that the actual efficiencies are higher than recommended in literature.
Estimated efficiencies did not differ significantly in our models, but were consistent regardless of the change in input variables.
Estimated efficiencies for the years 2008 2015 using DEA analysis of different models are shown in Table 4.
There are other limitations regarding the control of several factors, which would influence to the estimated efficiencies.
Four serial dilutions yielding ten samples in triplicate were used and the estimated efficiencies were 77% and 80% for SCA6 and ICS1 genotype, respectively.
(1) 2.5 40 - C t 2 - 40 - C t 1 10 All primer pairs were subsequently shown to operate at estimated efficiencies of between 94-112%.
