Displaying 3 results from an estimated 3 matches for "basestudi".
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basestudy
2010 Oct 26
2
Forcing results from lm into datframe
Hi
I need some help getting results from multiple linear models into a dataframe.
Let me explain the problem.
I have a dataframe with ejection fraction results measured over a number of quartiles and grouped by base_study.
My dataframe (800 different base_studies) looks like
> afvtprelvefs
basestudy quartile ef ef_std entropy
CBP0908020 1 21.6 0.53 3.27
2011 Feb 02
0
Finding the dominant factor in an unbalanced group
Hi all.
This is perhaps more a statistics question but I'm hoping someone can
help me.
I have a group of patients for whom I'm looking at beat to beat RR
interval changes.
I have plotted the difference between one beat length and the next
against the difference between the previous beat length and the current one.
This gives me a plot with four quadrants: the bottom left corresponding
to
2011 Apr 28
1
Extract complete rows by group and maximum
Hi
I'm trying to extract complete rows from a dataframe by group based on
the maximum in a column within that group.
Thus I have a dataframe:
cvd_basestudy ... es_time ...
_____________
study1 ... 0.3091667
study2 ... 0.3091667
study2 ... 0.2625000
study3 ... 0.3033333
study3 ... 0.2625000
__________
etc
I can extract the basestudy and the max(es_time)