Mokken Scaling analysis of Revised Clinical Interview Schedule (CIS-R) psychiatric status rating scales in a nationally representative sample: the 2007 Adult Psychiatric Morbidity Survey of England - Abstract
This study aims to investigate double monotonicity of Revised Clinical Interview
Schedule (CIS-R) psychiatric status rating scales data from 2007 Adult Psychiatric
Morbidity Survey (APMS) within the framework of Mokken models. Results show that
the items of the scale are sufficiently unidimensional in the general population for the
CIS-R responses to be scalable according to broad Mokken principles. These do not
require recourse to the parametric models for item response function curves typical of
most applications of IRT in patient reported outcome measures research (PROMs). Our
illustrative results provide an exemplar of the method. The methods are however more
widely relevant for phenotype work in clinical and behavioural research, and so should
appeal to those who work on addictions or in clinical medicine.