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While public-private ownership information is collected, the indicator variable for this was removed after initial estimates showed public ownership to be highly correlated with the sector variables and have no effect on hazard model estimates.
Exclusion of participants who died in the first three years after assessment of sickness absence had little effect on hazard ratios for cause-specific mortality (table 4).
Cox regression analysis allows for the inclusion of censored data and it models censored time-until-event data as a dependent variable where it can be assumed that the covariates have a multiplying effect on hazard rates.
We used time to any of three events; death, cholangiocarcinoma, or liver transplant, as a response variable and used the Cox proportional hazards model to investigate what factors had a statistically significant effect on hazard rates.
Supplementary figures include histograms for the bootstrap distributions for each PCB in a weighted quartile score associated with a positive effect on hazard of pregnancy (Additional file 1: Figure S1) and with a negative effect on the hazard (Additional file 1: Figure S2).
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Moreover, the various types of interruptions had differential effects on hazard detection.
To test for the effects of individual condition and environmental effects on hazard risk, we did a Cox proportional hazard model with the two infected treatments only.
Medical comorbidities exerted the greatest influence on mortality and had significantly stronger effects on hazard of death compared to psychiatric comorbidities.
Median progression-free survival (PFS) for VEGFr-TKI-intolerant patients in each arm was estimated using the Kaplan Meier method, and effect on PFS (hazard ratio (HR)) was calculated using the Cox proportional hazard model.
Third, some variables have a different effect on the hazard to work for a new employer and on the hazard to work with the current employer.
In particular, both perceiving an unemployment benefit and the number of years of contribution to the system have a negative effect on the hazard rate to partial retirement while a positive effect on the hazard rate to full retirement.
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CEO of Professional Science Editing for Scientists @ prosciediting.com