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:
|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 visits.
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)
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