Cox Model and SMR

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EmmaC_
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Is it necessary to have both hazard ratios and survival ratios in the same piece of research? I am confused because I am trying to identify whether this research I am looking at who have done both is necessary.
For the survival rate (SMR): they looked at the incidence of each variable in the diseased part of the cohort
For the hazard ratio (from Cox proportional hazards model) (HR): they looked at the effect of the variables on the disease
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Gregorius
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Report 7 months ago
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(Original post by EmmaC_)
Is it necessary to have both hazard ratios and survival ratios in the same piece of research? I am confused because I am trying to identify whether this research I am looking at who have done both is necessary.
For the survival rate (SMR): they looked at the incidence of each variable in the diseased part of the cohort
For the hazard ratio (from Cox proportional hazards model) (HR): they looked at the effect of the variables on the disease
It's not entirely clear what you're asking here; perhaps a link to the piece of research you're talking about would help. But it's quite standard to present both hazard ratios and standardized mortality rates in the same piece of research - after all, they give you slightly different views on the effects concerned. The hazard ratio tells you the relative rate of events for two different sets of covariate values; the SMR turns that into an estimate of the relative number of deaths in the two arms. All depends on what you want to communicate from your research.

So, no, it is not "necessary" to present both (I frequently don't), but you may wish to if the two methods are both informative.
Last edited by Gregorius; 7 months ago
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