In general, the spatial inhomogeneity of PWV started increasing before the observation of strong radar echoes within the GPS observation area, suggesting the possibility to use it as an index to predict precipitation events or at least as a parameter within a more complex index including other meteorological observations.
23 Use of both measures allowed consideration of whether the more complex index added predictive value over a simple count of professional groups.
In a forthcoming study, we demonstrate the building of a more complex index based on these principles, which is expected to satisfy additional and more stringent tests of construct validity.
Standard deviation has been widely used as a way to calculate diameter and height complexity and can be compared with more complex indices for stand structural comparisons (McElhinny et al. 2005 and citations within).
More recent publications (e.g., Jin et al., 2015; Rücker et al., 2011; Schwarzer et al., 2010; Stanley & Doucouliagos, 2014; Stanley & Doucouliagos, 2015) have urged the adoption of more complex indices of selection bias: 1.
In all groups assessed in our study, fasting insulin had comparable correlations to those observed with the more complex indices of insulin resistance (HOMA-IR, QUICKI or FIRI) with clamp insulin sensitivity.
We chose here the Angström, Nesterov and KBDI indices to represent a continuum of fire index types from a simple instantaneous index, to one that includes consideration of precipitation, to a more complex accumulative index with a physical interpretation.
In a recent study a compact frailty index with three components performed as well as a more complex frailty index with five components in predicting falls, disability and mortality [ 17].
In a concurrent project which utilized ancillary study data investigating rates of MI across the ARIC study communities, we found similar results regardless of whether individual neighborhood-level SES variables or a more complex SES index measure was used, as well as whether overall, community- or race-specific cutpoints were used[ 35, 36].
Many more complex meteorological indices depend on windspeed as an input, which limits their application to the calculation of index values at the location of sophisticated weather stations (the approach taken by Arpaci et al., 2013).
When the organisation of production becomes more complex, productivity indices become less relevant for the evaluation of performance, since the overall performance is less related to the optimisation of transfer of goods in space and more and more to the functioning of relations throughout the supply chain.
