Even though self-estimated ability to return to work is not the same as actually returning to work, long-term sick-listed patients' own beliefs on this matter is arguably an important predictor for return to work, in a similar vein as self-estimated health has been reported as the most valid predictor of a long life [ 9, 18].
However, since pain has been described as a subjective phenomenon, subjective recall has been regarded as the most valid way to assess pain [ 13].
But Gershwin was caught in the cross-fire between "those who see mass culture as the most valid expression of our time, and those who see it as the end of Western civilization", as Gershwin scholar David Schiff puts it.
It's clear a large portion of the crowd regard MKS as the most valid Sugababes lineup, a band cut short in their prime by the pressures of fame and adolescence.
So far, the three studies of abstinence programs generally recognized as the most valid have shown insufficient evidence that they delay sex, said Douglas Kirby, a senior research scientist at Education, Training and Research Associates in California.
To date SDLP proved itself as the most valid and reliable indicator of performance deterioration, and is at the basis of recently developed categorization systems of (medicinal) drugs.
(348 words) Systematic reviews are ranked as the most valid form of research in several hierarchies of evidence [ 1, 2].
Accordingly, many researchers promote use of self-identified race and ethnicity as the most valid measure for most types of epidemiologic studies (11, 12).
All these procedures are detailed in Additional file 1. Autoevaluation is described as the most valid evaluation of pain, because of its subjective characteristics [ 10].
IRT observation of pain patients after noxious stimulation is the new way of IRT evaluation apart from side-to-side comparison established as the most valid [ 22].
