Thanks a lot. I used survfit to generate KM plots but I will try to figure
out to find the corresponding returned value for KM estimate. Thank you for
your invaluable help.

On Mon, Jul 18, 2011 at 8:28 PM, David Winsemius <dwinsemius@comcast.net>wrote:

>
> On Jul 18, 2011, at 10:42 AM, Kishor Tappita wrote:
>
>  Ok David, Thanks for clearing my misconception. Then could you please
>> suggest me how I could get the KM estimate for a time point. I remember
>> reading the formula
>> for calculating the KM. Do, I have to write a method to compute the KM
>> estimate or will the survival package provide it for me?
>>
>
> ?survfit
> ?survfit.formula
>
> --
> david.
>
>
>
>>
>> Thank you so much in advance.
>>
>> Regards,
>> Kishor
>>
>> On Mon, Jul 18, 2011 at 7:52 PM, David Winsemius <dwinsemius@comcast.net>
>> wrote:
>>
>> On Jul 18, 2011, at 10:10 AM, Kishor Tappita wrote:
>>
>>  Dear David,
>>>
>>> Thank you for your reply. I realized that the summary  function can help
>>> me in finding the the order of the curves.
>>> The 0.95UCL (95% upper confidence level) column in particular seems to
>>> follow the same pattern as the curves on the plot.
>>>
>>
>> That would not have been my prediction. The 95% UCL could be high simply
>> because the sample size in that group was small.
>>
>> --
>> David
>>
>>
>>> I am new to survival analysis, so  please correct me if I am wrong.
>>>
>>> Thanks,
>>> Kishor
>>>
>>>
>>>
>>> On Mon, Jul 18, 2011 at 3:21 AM, David Winsemius <dwinsemius@comcast.net>
>>> wrote:
>>>
>>> On Jul 17, 2011, at 11:27 AM, Kishor Tappita wrote:
>>>
>>> Dear List,
>>>
>>> I used survival package of R and was able to generate KM plots. Now I
>>> need
>>>
>>> help in finding the top curve in a non-visualization way. I mean to say
>>> that
>>> I would like to know the order of curves through any existing methods
>>> rather
>>> than looking at the KM plots. I need this information as I am generating
>>> KM
>>> plots for thousands of genes.
>>>
>>> Why aren't you taking the KM estimate at a particular time?
>>>
>>> --
>>> David
>>>
>>>
>>> I would really appreciate if some one can direct me and help me.
>>>
>>> Thanks,
>>> Regards,
>>> Kishor
>>>
>>>       [[alternative HTML version deleted]]
>>>
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>>> and provide commented, minimal, self-contained, reproducible code.
>>>
>>> David Winsemius, MD
>>> West Hartford, CT
>>>
>>>
>>>
>>
>> David Winsemius, MD
>> West Hartford, CT
>>
>>
>>
> David Winsemius, MD
> West Hartford, CT
>
>

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