Dear all,
As I am new to the R community - although eager to advance- I would
like to pose a question to the community.
I have an SPSS file which I have imported it in R (with the read.spss
command) which conists of scale (continuous) variable "adiponectin" and
the corresponding categorical value "death" (0=No, 1=Yes). In all there
are 60 observations (among which there are 26 events).
I am trying to do rcspline.plot (model="logisitc", nk=5, knots=NULL)
however the error message that i get is "fewer than 6 non missing
observations".
I have repeated the process with a similar dataset of 300 observations
(instead of 60) and I still get the same message.
Can anybody suggest a hint ?
Kind regards
Georgios Chalikias MD,PhD
Senior Lecturer in Cardiology
Democritus University of Thrace
Alexandroupolis, Greece
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