General Health Questionnaire
Data from an psychiatric screening questionnaire
A data frame with 22 observations on the following 4 variables.
the General Health Questionnaire score.
a factor with levels
the number of diseased subjects.
the number of healthy subjects.
The data arise from a study of a psychiatric screening questionnaire
called the GHQ (General Health Questionnaire, see Goldberg, 1972).
Here the main question of interest is to see how caseness is related to
gender and GHQ score.
D. Goldberg (1972). The Detection of Psychiatric Illness by Questionnaire,
Oxford University Press, Oxford, UK.
data("GHQ", package = "HSAUR")
male <- subset(GHQ, sex == "male")
female <- subset(GHQ, sex == "female")
layout(matrix(1:2, ncol = 2))
barplot(t(as.matrix(male[,c("cases", "non.cases")])), main = "Male", xlab = "GHC score")
barplot(t(as.matrix(male[,c("cases", "non.cases")])), main = "Female", xlab = "GHC score")
Dataset imported from https://www.r-project.org.