The table relates the length of stay (in years) of 132
long-term schizophrenic patients in two London mental hospitals with
the frequency of visits.
A 2-dimensional array resulting from cross-tabulating
132 patients. The variables and their levels are as follows:
No || Name || Levels
1 || Visit Frequency || Regular, Less than monthly, Never
2 || Length of Stay || 2--9 years, 10--19 years, 20+ years
Wing (1962) who collected this data concludes
that the longer the length of stay in hospital, the less frequent the
Haberman (1974) notes that this pattern does not increase from the "Less
than monthly" to the "Never" group, which are homogeneous.
S.J Haberman (1974): Log-linear models for frequency tables with ordered
classifications. Biometrics, 30:689–700.
J.K. Wing (1962): Institutionalism in mental hospitals.
British Journal of Social Clinical Psychology, 1:38–51.
data("Hospital")mosaic(t(Hospital), shade = TRUE)
mosaic(Hospital, shade = TRUE)
sieve(Hospital, shade = TRUE)
assoc(Hospital, shade = TRUE)
Dataset imported from https://www.r-project.org.