The HUI3 was developed to address concerns surrounding certain definitions in the HUI2 [ 24], and is comprised of eight dimensions (vision, hearing, speech, cognition, pain, emotion, ambulation, and dexterity) with five or six ordered levels of severity for each dimension.
The commonly-used twenty-item PANAS scale [ 14] describes affective-emotional aspects of well-being and is comprised of two dimensions: positive and negative affect (PANAS-PA and PANAS-NA) which are reported as distinct and independent concepts.
The EQ-5D, a 5-item-questionnaire, developed by the EuroQoL-group (http://www.euroqol.org), is comprised of five dimensions: mobility, self-care, usual activities, pain/discomfort and anxiety/depression.
This framework is comprised of nine dimensions that guide observations: the physical space; people involved; related acts people do; objects present; single actions; set of related activities carried out; sequencing over time; goals people try to accomplish; emotions felt and expressed.
Penchansky and Thomas described healthcare access as being comprised of five dimensions; availability, affordability, accessibility, accommodation, and acceptability [ 17].
Hardiness is comprised of three personality dimensions: commitment, control and challenge.
It is comprised of three interlinked dimensions; namely availability (e.g. physical location of health facility relative to the population served), affordability (e.g. the degree of fit between the health service related costs and the ability of households to meet these costs) and acceptability (e.g. providers' attitudes to and expectations of patients and vice versa).
According to the PARiHS framework, it is comprised of three core and interrelated dimensions: culture, leadership and evaluation.
The framework is comprised of three main components: 1) dimensions of disability, 2) contextual factors that may exacerbate or alleviate disability, and 3) triggers or life events that may initiate a major or momentous episode for adults living with HIV.
