intsvy (version 2.9)

pirls.reg.pv: Regression analysis with plausible values

Description

pirls.reg.pv performs linear regression analysis (OLS) with plausible values and replicate weights.

Usage

pirls.reg.pv(x, pvlabel, by, 
data, std=FALSE, export = FALSE, name = "output", folder = getwd())

Value

pirls.reg.pv prints a data.frame with regression results (i.e., coefficients, standard errors, t-values, R-squared) and stores different regression output including residuals, replicate coefficients, variance within and between, and the regression data.frame in a list object of class "intsvy.reg".

Arguments

x

Data labels of independent variables (e.g., x = c("ASDHEHLA", "ITSEX") ).

pvlabel

The names of columns corresponding to the achievement plausible scores.

by

The label for the grouping variable, usually the countries (i.e., by="IDCNTRYL"), but could be any other categorical variable.

data

An R object, normally a data frame, containing the data from PIRLS.

std

A logical value. If TRUE standardised regression coefficients are calculated.

export

A logical value. If TRUE, the output is exported to a file in comma-separated value format (.csv) that can be opened from LibreOffice or Excel.

name

The name of the exported file.

folder

The folder where the exported file is located.

See Also

timss.reg.pv, pisa.reg.pv

Examples

if (FALSE) {
pirls$SEX[pirls$ITSEX=="BOY"]=1
pirls$SEX[pirls$ITSEX=="GIRL"]=0
pirls.reg.pv(pvlabel= paste0("ASRREA0", 1:5), by="IDCNTRYL", x="SEX", data=pirls)
}