subset.longarm: Return subset of longarm object

In guido-s/meta: General Package for Meta-Analysis

Return subset of longarm object

Description

The subset method returns a subset of a longarm object.

Usage

## S3 method for class 'longarm'
subset(x, subset, ...)

Arguments

x	An object of class longarm.
subset	A logical expression indicating elements or rows to keep: missing values are taken as false.
...	Additional arguments.

Value

A longarm object is returned.

Author(s)

Guido Schwarzer [e-mail]

See Also

longarm

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)

# Subset without Lieberman studies
subset(la1, grepl("Lieberman", studlab))

guido-s/meta documentation built on Feb. 20, 2025, 9:08 a.m.