Skip to main content

Table 6 Quality assessment of BIVI-IQ using the modified quality assessment tool for evaluation of PROMs from Hepworth et al. (2015) [12]

From: Development of a patient reported outcome measures for measuring the impact of visual impairment following stroke

Quality criteria

Definition

BIVI-IQ

Pre-study hypothesis

The pre-study specification of the aim of the instrument and the intended population

√√ A clear description is provided of the aim of the instrument and the intended population

Intended population

The extent to which the instrument has been studied in the intended population

√√ Intended population studied

Actual content area

The extent to which the content meets the pre-study hypothesis specifications

√√ Content is intended and is relevant to the intended population

Item identification

Selection of the items relevant to the target population for inclusion in the pilot instrument

√√ Comprehensive consulting with patients (focus groups or in-depth interviews) and a literature review

Item selection

Determining the items included in the final instrument

√√ A pilot instrument was developed and tested with Rasch or factor analysis and statistical justification provided for removing items, plus items with floor and ceiling effects removed and the amount of missing data considered

Scoring

A description of how the instrument should be scored

√√ Rasch scoring of a statistically justified response scale

Views of stroke patients considered

The percentage of stroke patients involved in item identification during the development of PROMs

√ Less than 50% of stroke patients were involved in the consultation with patients in the item identification

Stroke population

The extent to which the instrument has been studied in a stroke population

√√ Stroke population studied

  1. √√ positive rating; √ minimal acceptable rating; X negative rating