Construct validity of the Smoker Complaint Scale: A clinimetric analysis using Item Response Theory (IRT) models

Clinimetric Criteria for Patient-Reported Outcome Measures

“…Such issues encompass: patterns or types, severity, duration and sequence of symptoms; rate of progression and staging of illness; effects of comorbid conditions, including the evaluation of iatrogenic comorbidity; aspects of illness behavior, functional capacity, remission, recovery, and lifestyle; response to previous treatments; mental pain, psychological well-being, and euthymia; and many other clinical features that demarcate major prognostic and therapeutic differences in patients who appear to be deceptively similar since they share the same diagnosis [3,54,[57][58][59][60][61]. Clinimetric indices that could function as PROMs have been developed [28,59,62,63], and the clinimetric properties of previously developed scales have been evaluated [64][65][66][67][68][69][70][71][72][73][74]. However, the clinimetric perspective has not been considered by consensus reports on standardized criteria for the assessment of PROMs [13,30,31,34,36,44].…”

“…The ability to discriminate between subjects with or without a condition is a core clinimetric criterion for evaluating the usefulness of an index [3,53,73,74,80,84]. Such discrimination may also be achieved with the use of cutoff scores [9,90,91].…”

“…According to the clinimetric approach, unidimensionality is not a specific requirement of PROMs. A method for exploring and understanding the dimensionalities of the index is represented by item response theory, with models such as Rasch and Mokken analyses [9,73,74,80,95,96]. In the Mokken analysis, the coefficient of scalability is used to investigate the construct validity of PROMs [9].…”

“…In the Mokken analysis, the coefficient of scalability is used to investigate the construct validity of PROMs [9]. The clinimetric concept of scalability differs from the psychometric assumptions of homogeneity of components or unidimensionality [9,73,74,83]. Testing the scalability means examining to what extent each item in a clinimetric index provides distinctive clinical information and determining whether symptoms included in a clinimetric index belong to an underlying clinical syndrome [9,73,74,80].…”

Using The Andrich Rating Scale Model (ARSM) to build a Scale for the Academic Proficiency Among Cairo University Students Psychometric Study

“…It can be categorized according to the scale items grading into three categories, the first: dichotomous, used when the response to the item takes ) binary values (0,1), and the second: polytomous, in which the item's graded response is, for example, the response to some questionnaires and evaluation scales, and the third: related to the continuous response, it is an extension of the multiple response. One of the multiple response models is the "(Andrich Rating Scale Model) (ARSM) (Carrozzino et al, 2021), which is used with data from the rating scale. If the items match this model, the parameters of the items, represented in its difficulty degree, can be assessed independently of the abilities of individuals.…”