R help - Sep 2009 - some simple questions regarding survival analysis

I have two types of survival data for Drosophila
cohort. For example:

 uncensored
> age <- c (0, 2, 4, 6, 8, 10)
> alive1 <- c(10, 9, 6, 3, 1, 0)
> alive 2 <- c(10, 9, 4, 1, 1, 0)
and censored
> age <- c(0, 2, 4, 6, 8, 10)
> alive1 <- c(10, 8, 3, 1, 1, 0)
> escaped1 <- c(0, 1, 1, 0, 0, 0)
> alive2 <- c(10, 7, 2, 1, 1, 0)
> escaped2 <- c(0, 1, 2, 0, 0, 0)
1) What statistical tests is the most apropriate for the correct
comparison of uncensored data (alive1 and 2) and censored
ones?
2) What package and function I can use in R for the above
mentioned comparison?
3) Should I rearrange the data in the example tables for the
correct calculations using R functions?
With regard, Dmitry.

2) See packages Epi and epitools

-Johannes

2009/9/29 Dmitry Gospodaryov <gospodaryov at
rambler.ru>:
> I have two types of survival data for Drosophila
> cohort. For example:
>
> uncensored
>
>> age <- c (0, 2, 4, 6, 8, 10)
>> alive1 <- c(10, 9, 6, 3, 1, 0)
>> alive 2 <- c(10, 9, 4, 1, 1, 0)
>
> and censored
>
>> age <- c(0, 2, 4, 6, 8, 10)
>> alive1 <- c(10, 8, 3, 1, 1, 0)
>> escaped1 <- c(0, 1, 1, 0, 0, 0)
>> alive2 <- c(10, 7, 2, 1, 1, 0)
>> escaped2 <- c(0, 1, 2, 0, 0, 0)
>
> 1) What statistical tests is the most apropriate for the correct
> comparison of uncensored data (alive1 and 2) and censored
> ones?
> 2) What package and function I can use in R for the above
> mentioned comparison?
> 3) Should I rearrange the data in the example tables for the
> correct calculations using R functions?
> With regard, Dmitry.
>
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