Firstly, we constructed Cox proportional hazards models to derive hazard ratios and 95% confidence intervals.
Multivariable Cox proportional hazards models were used to derive hazard ratios for the three baseline medication group comparisons.
We constructed Cox models to derive hazard ratios and determine confounding and interaction effects for potentially modifiable risk factors for dementia and calculated mean percentage population attributable fractions for seven year incidence of mild cognitive impairment or dementia.
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).
We divided the map into four classes, i.e. very low, low, high, and very high, based on three breakpoints of the index values, i.e. -3, -1, 1, and 3. Figure 16 shows the derived landslide hazard map of the study area.
Exposure data can include estimates derived from hazard data through sophisticated modeling.
To evaluate the relationship between HbA1c and cancer mortality, we modeled HbA1c as a continuous variable and derived adjusted hazard ratios of cancer mortality comparing the 80th versus the 20th percentiles of HbA1c.
Latency analyses with Cox regression were used to derive crude hazard ratios and hazard ratios adjusted for high dimension propensity score for outcomes after 180 days from index implantation or discharge.
Cox regression was used to derive crude hazard ratios and hazard ratios adjusted for high dimensional propensity score for outcomes using the groups without an ICD (that is, older people admitted with equivalent indication for a primary ICD but who did not receive an ICD) as a reference.
In the step of hazard identification, the catastrophic functional hazards, derived from the functional hazard analysis (FHA) results for the airplane, are used as the top events to construct the fault trees.
