Sentence examples for hazard stratum from inspiring English sources

For example, a bicarbonate level of 10 mmol/L (or below) falls into the highest relative hazard stratum and thus gets assigned a standardized value of 9, representing the highest level of risk relative to the population baseline (Fig. 1A).

Hazard ratios were obtained to measure the increased risk of stroke across the risk strata.

Strata to be used for risk-based sampling are derived from epidemiological studies assessing the probability of occurrence of the hazard in the stratum (e.g. herds having imported animals from abroad, herds with specific risk factors) and/or the consequence of the occurrence of the hazard in this stratum (e.g. potentially infected animals in sale yards or markets).

We then tested variables to identify predictors of survival outcomes by applying Cox proportional hazard models within strata of molecular subtypes (Table 5).

Mehrotra et al.[ 26] proposed an efficient alternative to the stratified Cox model analysis to estimate the exposure effect, which does not require the assumption of a common hazard ratio across strata.

For all Cox regressions, simple contrasts were used, comparing the injury hazard at a baseline stratum of a variable (defined with a hazard ratio (HR) of 1.00) with other strata of the same variable.

This simplistic assumption is at odds with the progressive increase in relative hazard with decreasing CD4 stratum (i.e. increasing duration of infection) that emerged from our analysis (Figure 2c&d).

We developed Cox proportional hazard models in each stratum of eGFR groups.

A stratified Cox model is performed with time-to-event outcomes, and involves calculating a hazard ratio within each stratum, then combining the results for a final estimate.

Analyses were stratified by age-group, such that stratified estimates (equal coefficients across strata but with a baseline hazard unique to each stratum) were then obtained.

Relative risk was estimated by Cox regression, taking attained age as the underlying time variable, and stratifying by cancer registry region of residence at recruitment (i.e. assuming equal coefficients across strata but with a baseline hazard unique to each stratum) (StataCorp., 2009).