If parameter estimates of the Weibull models are transformed to hazard ratios, every U.S.$100 less spent is associated with a 0.64percentt increase in the hazard of dying and a 1.27percentt increase in the hazard of a readmission conditional on not dying.
Using Cox's proportional hazards model, we examined differences in hazard of dying adjusted for gender, age at diagnosis, year of diagnosis and average annual hospital volume of diagnoses.
Every U.S.$100 less spent is associated with a 0.63percentt increase in the hazard of dying and a 1.24percentt increase in the hazard to be readmitted conditional on not dying.
Flexible parametric hazard models were used to estimate net survival and the excess hazard of dying from breast cancer up to 3 years after diagnosis.
The Cox proportional hazards model was used to estimate the relative risk of dying (hazard ratio) from breast cancer related to the categories (see above) of birth weight, birth length and ponderal index.
The hazard of dying at age x, μ(x), was defined according to the Gompertz or Siler hazard equations (μ(x)) in turn.
In our patient cohort, the NPI score was a strong predictor of disease-free survival and overall survival, with the hazard of relapse increasing just below two-fold per unit of NPI score (HR=1.81 (1.47–2.23), P<0.001), and the hazard of dying increasing just above two-fold per unit of NPI score (HR=2.15 (1.61–2.88), P<0.001) (Supplementary Table 8, Figure 2A).
In comparison to ambulatory patients, bedridden patients had double the hazard to die or develop TB [aHR = 2.47; 95 % CI (1.62, 3.75)], and working patients had a 33%% lower hazard to die or develop TB [aHR = 0.67; 95 % CI (0.50, 0.89)].
Patients whose initial BNP level was above the median had a significantly higher hazard of dying (HR 2.96, 95% CI 1.06 8.26).
Our objective was to estimate the detrimental effects of lameness on calving-to-conception interval and hazard of dying or being culled in lactating Holstein cows.
