feat: life tables

[ESCRI11]

Implemented life tables. This allows to obtain pooled survival curves. Reference: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5338193/

We obtain the pooled table:

    time n.risk n.event survival_rate       surv strata
1      0      0       0     1.0000000 1.00000000      1
2     10    227       1     0.9955947 0.99559471      1
3     20    220       7     0.9681818 0.96391670      1
4     30    219       2     0.9908676 0.95511381      1
...

And then we can plot the pooled curves

Code examples included on dsSurvival/vignettes/simple_script.R

[neelsoumya]

@tombisho @StuartWheater can you please also independently test this code and do checks for disclosures/privacy ?

[neelsoumya]

@ESCRI11 can you please update the version to be 2.1.5 in the DESCRIPTION file to match the version in dsSurvival?

[ESCRI11]

Yes, done

[neelsoumya]

@ESCRI11 I see a man file man/dot-compute_survival_rates.Rd

Is there an R function corresponding to this?

[neelsoumya]

@ESCRI11 I see a man file man/dot-compute_survival_rates.Rd

Is there an R function corresponding to this?

If not, can you please remove the .Rd file?