intsvy (version 2.9)

timss.log: Logistic regression analysis

Description

timss.log performs logistic regression analysis for an observed depedent variable (NOT for plausible values)

Usage

timss.log(y, x, by, data, export = FALSE, 
name = "output", folder = getwd())

Value

timss.log prints a data frame with coefficients, standard errors, t-values, and odds ratios. Results are stored in a list object of class "intsvy.reg".

Arguments

y

Label for dependent variable

x

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

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.

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

pirls.log, pisa.log

Examples

if (FALSE) {

pisa$SKIP[!(pisa$ST09Q01 =="None" & pisa$ST115Q01 == "None")] <- 1
pisa$SKIP[pisa$ST09Q01 =="None" & pisa$ST115Q01 == "None"] <- 0

pisa$LATE[!pisa$ST08Q01=="None"] <- 1
pisa$LATE[pisa$ST08Q01=="None"] <- 0

pisa.log(y="SKIP", x="LATE", by="IDCNTRYL", data = pisa)

}