On 13-11-18 3:46 PM, Beckstrand, Janis, NCOD wrote:
I have information in a 3 dimensional list that I want to use to create
a table for a written report.
The 3d list was created by applying the epiR function epitest to a
list of 8 2x2 tables using lapply.
The resulting list gives the 12 statistics with CIs, that generated by
epitest, for each of the 8 matrices (i9, i10, etc).
The list has the following form:
Statslow$i9
$aprev
est lowerupper
1 0.2263884 0.2244714 0.228314
$tprev
est lower upper
1 0.204388 0.2025413 0.2062442
Statslow$i10
$aprev
est lowerupper
1 0.227004 0.22545 0.228314
$tprev
est lower upper
1 0.204388 0.2025413 0.2062442
I want to create a report that has a table in the following format:
I9
i10
Est lower upper Est lower
upper
aprev 0.23 0.22 0.23 etc
tprev0.2 0.20 0.21
etc
I have read and tried the tables package pdf and also the information at
http://www.r-statistics.com/tag/data-frame/ about cast() and
tabular.cast_df.r(),
and also all the information I can find on nested tables, but have not
be successful.
I have tried to use melt() on the 3D list (to create a dataframe
statslow.d) but get what seems more like S3 output :
variable value L2L1
1 est 0.2263884aprev i9
2lower0.2244714aprev i9
3upper 0.2283140aprev i9
4 est 0.2043880 tprev i9
5lower0.2025413tprev i9
6upper 0.2062442tprev i9
When I try to use it with tables() I get errors
and I can't see how to use the tables function on it to get what I want.
Here is the tables() code that I have tried:
class(statslow.d)
[1] data.frame
head(statslow.d)
variable valueL2 L1
1 est 0.2263884 aprev i9
2lower 0.2244714 aprev i9
3upper 0.2283140 aprev i9
4 est 0.2043880 tprev i9
5lower 0.2025413 tprev i9
6upper 0.2062442 tprev i9
tabular(statslow.d,L2~L1*variable)
Error in tabular.formula(as.formula(table, env = parent.frame()), ...) :
data must be a dataframe, list or environment
statslow.d-as.data.frame(statslow.d)
tabular(statslow.d,L2~L1*variable)
Error in tabular.formula(as.formula(table, env = parent.frame()), ...) :
data must be a dataframe, list or environment
I would appreciate any help or hints anyone can give.
The arguments to tabular are in the wrong order. You need to give the
formula first or name it as table. So
tabular(L2 ~ L1*variable, data=statslow.d)
would not give an error, but it probably doesn't do what you want,
because you don't specify a statistic, so it will default to a count.
You could use the mean function, e.g.
tabular(L2 ~ L1*variable*Heading()*mean, data=statslow.d)
(The Heading() will suppress the column label mean.) There are
examples in the vignette that do fancy formatting of multiple columns,
so it would be possible to write the interval as [.224, .228] for instance.
Duncan Murdoch
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