matchTab {epiDisplay}R Documentation

Matched tabulation

Description

Tabulation of outcome vs exposure from a matched case control study

Usage

matchTab (case, exposed, strata, decimal)

Arguments

case

Outcome variables where 0 = control and 1 = case

exposed

Exposure variable where 0 = non-exposed and 1 = exposed

strata

Identification number for each matched set

decimal

Number of digits displayed after the decimal point

Details

Tabulation for an unmatched case control study is based on individual records classified by outcome and exposure variables.

Matched tabulation is tallying based on each matched set. The simplest form is McNemar's table where only one case is matched with one control. 'matchTab' can handle 1:m matching where m can vary from 1 to m. A MLE method is then used to compute the conditional odds ratio.

Author(s)

Virasakdi Chongsuvivatwong <cvirasak@medicine.psu.ac.th>

See Also

'table', 'cc' and 'clogit'

Examples

.data <- infert
## Not run:

# matchTab(case, induced, stratum)
# Tabulation successful but OR not computed
# because 'induced' is not binary

## End(Not run)
attach(.data)
ia <- induced > 0  # any induced abortion
matchTab(case, ia, stratum)

# See also
clogit(case ~ ia + strata(stratum), data=infert)
detach(.data)
rm(list=ls())

[Package epiDisplay version 3.5.0.1 Index]