Under the standard flexible parametric survival model we observe a hazard ratio for a ten unit increase in baseline SBP of 1.111 955% CI: 1.051, 1.172).
When the outcome is measured at discrete time points (e.g. only a few weeks observed), a discrete hazard regression analysis [ 19] could be more appropriate than the Cox model.
We observed a lower hazard of virologic failure for regimens containing ritonavir-boosted PI as compared to those containing NNRTI, and this might be a reflection of both the selection bias and the endpoint definition.
Puett et al. [ 5] observed an increased hazard ratio of 1.14 (1.03-1.27) for living less than 50 m versus ≥200 m from a roadway among women.
Comparing women with one or more mammography to those who had none, we observed a reduced death risk hazard of 1.8 (95% CI=[1.4 2.3]; P<0.001) 9 years after diagnosis.
For every 1-year increase in age, we observed a decrease in hazard, as previously reported.
We observed a non-significant hazard ratio of 2.26 for obstructive coronary artery disease, a finding that was seen in 37% of patients.
They observed a significantly decreased hazard ratio (HR 0.52, 95% CI, 0.29, 0.94) for overall survival when patients in the highest quartile of 25-OHD were compared with patients in the lowest quartile.
Interestingly, we observe a zero hazard for the gap time to the second event within the first 30 days.
