Objective To assess the reliability and validity of the Japanese translation version of the Pediatric Quality of Life Inventory™ 4.0 Short Form 15 (PedsQL™ 4.0 SF15). Methods The PedsQL™ 4.0 SF15 was ...

Is the purpose of the new joint industry committee (JIC) about improving TV audience measurement quality or is it about gamesmanship? Is it even possible to validly measure viewing using alternative ...

In everyday language, the term validity is typically used to describe something as being trustworthy or legit. It's meaning ...