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Re: st: how to code for a 5-hour delay
From
Nick Cox <[email protected]>
To
"[email protected]" <[email protected]>
Subject
Re: st: how to code for a 5-hour delay
Date
Mon, 10 Feb 2014 16:42:51 +0000
This is a bit difficult to follow, but a difference in date-times is
itself an elapsed time, not a date-time.
If -clock()- was used to compute date-times, the results in
milliseconds need to be divided by 60 * 60 * 1000 to get a result in
hours.
Nick
[email protected]
On 10 February 2014 16:19, Dao Kim <[email protected]> wrote:
> Hi, I need help to write a command to select patient that received a drug in the 5 hours following the first one. I have time1 (1st drug administration) and time2 (2nd drug administration). I created a cat with delay (time2-time1), which has the 1 jan 1960, I don't really know how to change that, still it's not the matter. I would like to keep only the patients for how delay is < or = to 5 hours, should I write 5 hrs in a SIF time? How do I convert? Didn't work so far. Thanks for your help. Kim
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