Content validity, measuring what one intends to measure, is the measurement property in this context that assesses whether items are comprehensive, well understood and adequately reflect the patient perspective from the population of interest [ 8- 14].
That COSMIN operates a "lowest score counts" scoring system may account for the lack of measures scoring well in the measurement property criteria.
Owing to the uniaxial measurement property of the ActiGraph accelerometer, measuring cycling and fitness activities (particularly strength training) is limited.
52 This supports its interpretability, which although not considered a measurement property, is a clinically important characteristic of any outcome measure.
Two authors (DD and RK) independently rated included studies methodological quality and measurement property ratings.
To make a recommendation on the "best" instrument to assess attitudes toward and/or capabilities regarding self-management of osteoarthritis (OA) based on available measurement property evidence.
The Consensus-based Standards for the Selection of health Measurement Instruments (COSMIN) checklist was used to assess methodological quality and measurement property rating of included studies.
In assessing measurement property rating for responsiveness, we defined smallest detectable change as the minimal change required to ensure the observed change is real [30].
It is hoped that this feature of the checklist prompts users to undertake their own measurement property and feasibility assessments when using a performance test.
a✓= Yes, measurement property identified as evaluated based on patients with mCRPC; − = No, measurement property not identified as evaluated based on patients with mCRPC.
This measurement property needs to be assessed before using such methods in longitudinal comparative studies.
