percent memisc 0.99.26.3

# Table of Percentages with Percentage Base¶

## Description¶

percent returns a table of percentages along with the percentage base. It will be useful in conjunction with Aggregate or genTable.

## Usage¶

percent(x,...)
## S4 method for signature 'default'
percent(x,weights=NULL,total=!(se || ci),
se=FALSE,ci=FALSE,ci.level=.95,
total.name="N",perc.label="Percentage",...)
## S4 method for signature 'logical'
percent(x,weights=NULL,total=!(se || ci),
se=FALSE,ci=FALSE,ci.level=.95,
total.name="N",perc.label="Percentage",...)

## Arguments¶

x

a numeric vector or factor.

weights

a optional numeric vector of weights of the same length as x.

total

logical; should the total sum of counts from which the percentages are computed be included into the output?

se

logical; should standard errors of the percentages be included?

ci

logical; should confidence intervals of the percentages be included?

ci.level

numeric; nominal coverage of confidence intervals

total.name

character; name given for the total sum of counts

perc.label

character; label given for the percentages if the table has more than one dimensions, e.g. if se or ci is TRUE.

...

for percent.mresp: one or several 1-0 vectors or matrices otherwise, further arguments, currently ignored.

## Value¶

A table of percentages.

## Examples¶

x <- rnorm(100)
y <- rnorm(100)
z <- rnorm(100)
f <- sample(1:3,100,replace=TRUE)
f <- factor(f,labels=c("a","b","c"))
percent(x>0)
Percentage          N
47        100
percent(f)
a   b   c   N
35  21  44 100
genTable(
cbind(percent(x>0),
percent(y>0),
percent(z>0)) ~ f
)
, , f = a

percent(x > 0) percent(y > 0) percent(z > 0)
Percentage       51.42857       45.71429       48.57143
N                35.00000       35.00000       35.00000

, , f = b

percent(x > 0) percent(y > 0) percent(z > 0)
Percentage       38.09524       23.80952       52.38095
N                21.00000       21.00000       21.00000

, , f = c

percent(x > 0) percent(y > 0) percent(z > 0)
Percentage       47.72727       54.54545       43.18182
N                44.00000       44.00000       44.00000
gt <- genTable(
cbind("x > 0" = percent(x>0,ci=TRUE),
"y > 0" = percent(y>0,ci=TRUE),
"z > 0" = percent(z>0,ci=TRUE)) ~ f
)
ftable(gt,row.vars=3:2,col.vars=1)
Percentage     lower     upper
f
a x > 0   51.428571 33.989142 68.617149
y > 0   45.714286 28.827144 63.354198
z > 0   48.571429 31.382851 66.010858
b x > 0   38.095238 18.107163 61.564561
y > 0   23.809524  8.217588 47.165983
z > 0   52.380952 29.780684 74.286937
c x > 0   47.727273 32.461422 63.310248
y > 0   54.545455 38.847212 69.609289
z > 0   43.181818 28.349373 58.966278
ex.data <- expand.grid(mean=c(0,25,50),sd=c(1,10,100))[rep(1:9,rep(250,9)),]
ex.data <- within(ex.data,x <- rnorm(n=nrow(ex.data),mean=ex.data\$mean,sd=ex.data\$sd))
ex.data <- within(ex.data,x.grp <- cases( x < 0,
x >= 0 & x < 50,
x >= 50 & x < 100,
x >= 100
))
genTable(percent(x.grp)~mean+sd,data=ex.data)
, , sd = 1

mean
0  25    50
x < 0              55.2   0   0.0
x >= 0 & x < 50    44.8 100  45.6
x >= 50 & x < 100   0.0   0  54.4
x >= 100            0.0   0   0.0
N                 250.0 250 250.0

, , sd = 10

mean
0    25    50
x < 0              52   0.8   0.0
x >= 0 & x < 50    48  98.4  50.8
x >= 50 & x < 100   0   0.8  49.2
x >= 100            0   0.0   0.0
N                 250 250.0 250.0

, , sd = 100

mean
0    25    50
x < 0              47.6  42.4  28.4
x >= 0 & x < 50    18.4  18.4  19.6
x >= 50 & x < 100  16.8  12.4  20.0
x >= 100           17.2  26.8  32.0
N                 250.0 250.0 250.0