Get formatted means and confidence intervals by group

Usage

table_mean_conf_by(x, by, digits = 2, binom = FALSE)

Arguments

x: numeric vector to compute the mean for
by: grouping variable
digits: number of digits in results (default: 2)
binom: compute binomial CI instead of the usual ones

Value

An array of list entries, with dimensions and dimension names determined by the levels of the grouping variables in by. Each observed group contains the two-element character vector returned by table_mean_conf; unobserved combinations contain NULL.

Examples

# Group means for continuous data
x <- rnorm(100, mean = 50, sd = 10)
groups <- rep(c("A", "B", "C"), length.out = 100)
table_mean_conf_by(x, groups)
#> $A
#> [1] "49.96"          "[46.39, 52.90]"
#> 
#> $B
#> [1] "47.10"          "[43.93, 50.26]"
#> 
#> $C
#> [1] "45.93"          "[41.78, 49.69]"
#> 

# Group means for binary data 
y <- rbinom(100, 1, prob = 0.7)
table_mean_conf_by(y, groups, binom = TRUE)
#> $A
#> [1] "0.62"         "[0.45, 0.76]"
#> 
#> $B
#> [1] "0.76"         "[0.59, 0.87]"
#> 
#> $C
#> [1] "0.64"         "[0.47, 0.78]"
#>