Sentences with phrase «proportional hazards»
"Proportional hazards" refers to a concept in statistics that measures how different factors can affect the likelihood of an event happening. It means that the relationship between these factors remains constant over time. Full definition
They analyzed four types of antihypertensive drugs: beta blockers, diuretics, angiotensin converting enzyme inhibitors (ACEi), and CCBs, and used Cox proportional hazard regression models to obtain hazard ratios for the association of the four types of medication with risk of pancreatic cancer.
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Cox Proportional Hazard Ratios (HR) for Sensitivity Analyses Including the Obese and Those With Major Risk Factors
Data analysis involved cox proportional hazards, generalized estimating equations models and Kaplan - Meier analysis.
Cox Proportional Hazard Ratios (HR) for Associations Between Physical Activity Duration and Mortality in Men and Women
The proportional hazard assumptions were confirmed graphically by log - log plots.
To evaluate the effect of pacifier introduction while adjusting for other predictors of breastfeeding duration, Cox proportional hazard models were developed.
To evaluate the effect of pacifier introduction on breastfeeding duration while adjusting for other known predictors of duration, Cox proportional hazard models were developed.
Cox proportional hazard modeling included various known risk factors as covariables.
Survival rates were estimated using the Kaplan - Meier method and compared using the log - rank test and Cox proportional hazard models.
The effect of having at least one CNA in any CFS was assessed using the Kaplan - Meier method and Cox proportional hazard models.
Cumulative death rates were summarized using Kaplan Meier curves, and hazard ratios were estimated using Cox proportional hazards models.
Hazard ratios (HRs) were estimated using Cox proportional hazards models stratified by age, prior disease (if appropriate), and randomization status in the WHI dietary modification trial.
Primary outcome comparisons are presented as hazard ratios (HRs) and 95 % confidence intervals (CIs) from Cox proportional hazards analyses, 17 stratified by clinical center, age, prior disease, and randomization status in the low - fat diet trial.
We used Cox proportional hazard models to investigate relations between CSF and plasma ApoA1 concentrations and clinical progression, defined as progression to MCI or AD for SCD, and progression to AD for MCI.
Univariate hazard estimates were generated with unadjusted Cox proportional hazards models.
We used Schoenfeld residuals to test the proportional hazards assumption and martingale residuals to assess model fit.
Cox Proportional Hazard Ratios (HR) for Associations Between Meeting Physical Activity Guidelines and All - Cause Mortality, Stratified by Survey and Survey Year
Cox Proportional Hazard Ratios (HR) for Associations Between Physical Activity Frequency and Mortality in Men and Women Meeting Physical Activity Guidelines
Cox Proportional Hazard Ratios (HR) With Adjustment for Survey Year and Other Potential Confounders
Cox Proportional Hazard Ratios (HR) for Sensitivity Analyses Including Adjustment for Prevalent CVD / Cancer and Body Mass Index
Incident antipsychotic use was compared with time without antipsychotics with Cox proportional hazard models.
Cox Proportional Hazard Ratios (HR) for Sensitivity Analysis Excluding Participants With Physician - Diagnosed CVD or Cancer at Baseline
Cox Proportional Hazard Ratios (HR) for Associations Between Vigorous - Intensity Physical Activity Frequency and Mortality in Men and Women Meeting Physical Activity Guidelines
Next, we fitted Cox proportional hazard models to estimate hazard ratios and 95 % confidence intervals according to each exposure variable.
Hazard ratios and trends were obtained by using Cox proportional hazards regression analysis.
Cox proportional hazards regression was used to assess hazard ratios (HRs) with 95 % CIs for carbohydrate nutrition on 13 - y inflammation - related mortality.