Anthony, thanks for your reply.
Resetting the levels didn't work.
These are the first 25 rows of the dataset:
structure(list(id = c(51L, 52L, 53L, 54L, 55L, 56L, 57L, 58L,
59L, 60L, 61L, 62L, 63L, 64L, 65L, 66L, 67L, 68L, 69L, 70L, 71L,
73L, 74L, 75L, 76L), stratum = structure(c(1L, 4L, NA, 4L,
hi martin, sending the first 25 rows does not help if it does not re-create
the problem.. when i run the data you have provided, i do not encounter
your problem (see below). someone else may be able to guess the issue, but
this would be a lot easier to solve if you can create a minimal
reproducib
try resetting your levels? if that doesn't work, please dput() an example
data set that we can test with :) thanks!
sii.design <- update( sii.design , d6 = factor( d6 ) )
On Wed, Nov 12, 2014 at 7:59 AM, Martin Canon
wrote:
> Hi.
>
>
> I'm trying to calculate the weighted mean score of a
Hi.
I'm trying to calculate the weighted mean score of a quality of life
measure (ovt) in patients with irritable bowel syndrome by their
marital status (d7).
This is a summary of the structure of the dataset:
> str(sii.tesis)
'data.frame':1063 obs. of 75 variables:
$ id : int 51
4 matches
Mail list logo
