[R] Hmisc summary.formula formats for binary and continuous variables

[Frank Harrell]

If by 35 (10%) you mean that 35 is the numerator, this is not such a good
idea.  That's because it emphasizes something that is not a scientific
quantity.  A scientific quantity is something that has a meaning outside the
current sample.  The numerator is dependent on the denominator.

Regarding the other formatting issue, summary.formula with method='reverse'
is not flexible enough to allow that.
Frank


Kwok, Heemun wrote:
> 
> Hello,
> I am using Hmisc summary.formula, latex and Sweave to produce tables for
> publication.  Is it possible to change the formats for binary and
> continuous variables?  I would prefer to show 35 (10%) and 1.5 (1.2-1.8)
> rather than 10% (35) and 1.2 / 1.5 / 1.8. Here is a simple example:
> 
> sex <- factor(sample(c("m","f"), 500, rep=TRUE))
> age <- rnorm(500, 50, 5)
> treatment <- factor(sample(c("Drug","Placebo"),
> 500, rep=TRUE))
> 
> s1 <- summary(~sex + age)
> s2 <- summary(treatment ~ sex + age, method="reverse")
> print(s1); print(s2)
> 
> Descriptive Statistics  (N=500)
> 
> +-------+-----------------+
> |       |                 |
> +-------+-----------------+
> |sex : m|    46% (232)    |
> +-------+-----------------+
> |age    |47.22/50.31/53.37|
> +-------+-----------------+
> 
> 
> 
> Descriptive Statistics by treatment
> 
> +-------+-----------------+-----------------+
> |       |Drug             |Placebo          |
> |       |(N=257)          |(N=243)          |
> +-------+-----------------+-----------------+
> |sex : m|    47% (122)    |    45% (110)    |
> +-------+-----------------+-----------------+
> |age    |47.35/50.00/52.68|46.78/50.92/53.97|
> +-------+-----------------+-----------------+
> 
> Thanks,
> Heemun
> 
> 
> -------------------------------------------------
> Heemun Kwok, M.D.
> Research Fellow
> Harbor-UCLA Department of Emergency Medicine
> 1000 West Carson Street, Box 21
> Torrance, CA 90509-2910
> office 310-222-3501, fax 310-212-6101
> 
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
> 


-----
Frank Harrell
Department of Biostatistics, Vanderbilt University
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