Does the EQ-5D usual activities dimension measure what it intends to measure? The relative importance of work, study, housework, family or leisure activities

What Does It Mean to "Measure Performance"?

The purpose of much computer science research is to invent algorithms, and generate evidence to convince others that the new methods are worthwhile. All too often, however, the work has no impact, because the supporting evidence does not meet basic standards of rigor or persuasiveness. Here the notion of “experiment” is explored, with reference to our current investigation into distributed text...

High density Lipoprotein; What to Measure: Quality or Quantity?

Does the eHealth Literacy Scale (eHEALS) Measure What it Intends to Measure? Validation of a Dutch Version of the eHEALS in Two Adult Populations

BACKGROUND The Internet increases the availability of health information, which consequently expands the amount of skills that health care consumers must have to obtain and evaluate health information. Norman and Skinner in 2006 developed an 8-item self-report eHealth literacy scale to measure these skills: the eHealth Literacy Scale (eHEALS). This instrument has been available only in English ...

Activities of Daily Vision Scale: what do the subscales measure?

PURPOSE Previous Rasch analysis of the Activities of Daily Vision Scale (ADVS) did not address psychometric properties of its subscales or provide detailed assessment of dimensionality (whether the ADVS measures one or multiple constructs). This study was designed to examine these properties. METHODS Two hundred thirty-two participants (mean age, 74.2 years) awaiting cataract surgery self-adm...

Quantifying the physical demands of collision sports: does microsensor technology measure what it claims to measure?

The physical demands of rugby league, rugby union, and American football are significantly increased through the large number of collisions players are required to perform during match play. Because of the labor-intensive nature of coding collisions from video recordings, manufacturers of wearable microsensor (e.g., global positioning system [GPS]) units have refined the technology to automatic...