Ectopic pregnancy {epiDisplay}

Dataset of a case-control study looking at history of abortion as a risk factor for ectopic pregnancy

Description

This case-control study has one case series and two control groups.
The subjects were recruited based on three types of pregnancy outcome

Usage

data(Ectopic)

Format

A data frame with 723 observations on the following 4 variables.

id

a numeric vector

outc

a factor with levels EP IA Deli

	EP	= ectopic pregnancy
	IA	= women coming for induced abortion
	Deli	= women admitted for full-term delivery

hia

a factor with levels never IA ever IA

gravi

a factor with levels 1-2 3-4 >4

Examples

data(Ectopic)
library(nnet)
data(Ectopic)
.data <- Ectopic
multi1 <- multinom(outc ~ hia + gravi, data=.data)
summary(multi1)
mlogit.display(multi1)

# Changing referent group of outcome
.data$outcIA <- relevel(.data$outc, ref="IA")
multi2 <- multinom(outcIA ~ hia + gravi, data=.data)
summary(multi2)
mlogit.display(multi2)