meta (version 8.1-0)

[.longarm: Extract parts of longarm object

Description

Auxiliary function to extract parts of longarm object.

Usage

# S3 method for longarm
[(x, ...)

Arguments

x

An object of class longarm.

...

Additional arguments (passed on to [.data.frame).

Author

Guido Schwarzer

See Also

longarm, subset.longarm, dat.franchini2012

Examples

# Transform data from wide arm-based format to contrast-based format
pw1 <- pairwise(list(Treatment1, Treatment2, Treatment3),
  n = list(n1, n2, n3),
  mean = list(y1, y2, y3), sd = list(sd1, sd2, sd3),
  data = dat.franchini2012, studlab = Study)

# Transform data from contrast-based to long arm-based format
# and only keep the main variables
la1 <- longarm(pw1, append = FALSE)
head(la1)

la1[la1$studlab == "Lieberman 1998", ]