Hookworm 1993 {epicalc}R Documentation

Dataset from a study on hookworm prevalence and intensity in 1993

Description

A dataset from a cross-sectional survey in 1993 examining hookworm infection

Usage

data(HW93)

Format

A data frame with 637 observations on the following 6 variables.

id
a numeric vector for personal identification number
epg
a numeric vector for eggs per gram of faeces
age
a numeric vector for age in years
shoes
a factor for shoe wearing with levels no yes
intense
a factor for intensity of infection in epg. with levels 0 1-1,999 2,000+
agegr
a factor for age group with levels <15 yrs 15-59 yrs 60+ yrs

Examples

library(MASS)
data(HW93)
use(HW93)
intense.ord <- ordered(intense)
ord.hw <- polr(intense.ord ~ agegr + shoes)
summary(ord.hw)

[Package epicalc version 2.10.1.1 Index]