Similar(60)
Other authors (e.g., Beardsmore 2004; Stuwe 2007) prefer a different type of proportionality to use as the denominator in Eq. 1a, as that adopted in this study: tau = frac{{l^{2} }}{{pi^{2} kappa }} (1b where (l) and (kappa) are the characteristic length scale (m) and thermal diffusivity (m2 s−1) of the material (lithology), respectively.
We tested the proportionality of hazard using log log curves and formal tests of interaction with time or log-time.
The model specification was established by residual analysis, DFBETA measures of influence across each model covariate, and formal check of proportionality by the use of time-varying covariate effect.
Furthermore, we tested the assumption of proportionality by using generalised linear regression of the scaled Schoenfeld residuals on functions of time to test for a non-zero slope.
We derived unadjusted hazard ratios for death in each sub-cohort by using Cox's proportional hazards regression, having verified the proportionality of hazards by using an option in Stata that plots survival curves for each category of a covariate versus time analysis ("log-log" plots).
Human rights law requires that every effort be made to arrest a suspect, in line with the "principles of necessity and proportionality on the use of force", the investigator said.
We tested for proportionality of survival curves using Schoenfeld residuals and found evidence of non-proportionality; proportional hazard regression was therefore inappropriate and we instead used Poisson regression, which more easily allowed modelling time varying covariates and non-proportional hazards.
We tested for proportionality of survival curves using Schoenfeld residuals and found evidence of non-proportionality; proportional hazard regression was therefore inappropriate and we instead used Poisson regression and present incidence rate ratios (IRRs).
For each infant, a ponderal index (PI) was calculated as a measure of proportionality of birth size using the established formula: 100 times birth weight in grams divided by the cube of birth length in centimeters [ 36].
In an unusual written protest, the International Committee of the Red Cross publicly "deplored" the driver's death and cited the obligations of military forces under the Fourth Geneva Convention to "respect and protect civilians and to apply the principle of proportionality whenever the use of force is required".
"I do think there is a legitimate question to ask, which is: how do you make sure you have proper accountability and proper proportionality about the use of these powers?
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