How do I calculate 1-SD for a co variate in Survival analysis?

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Maurice Ekpenyong

Survival analysis corresponds to a set of statistical approaches used to investigate the time it takes for an event of interest to occur. When you determine the standard deviation for the covariate and you are interested in setting the range, then you can talk about 1 or 2 or 3 standard deviations. The calculations are attached. I don't know the software you used but that for SPSS is attached.

Aravind Lathika Rajendrakumar

Thanks Maurice. Is 1-SD same as change in 1 Standard Deviation?

Matthew Kerry

1-SD seems like "1 Standard Deviation" to me. Might be same.

Hope this helps

Matt