Many bills have been drafted and presented for approval to the Italian Parliament during past legislatures, in particular regarding the requirements for validity and the possible contents of the patient's previously manifested will and also regarding its potential binding character for the physician who receives it.
A systematic review by Linder et al. identified 16 instruments used to measure HRQL in sinusitis, of which only three instruments met basic requirements for validity, reliability, and responsiveness: the Chronic Sinusitis Survey – Duration-based (CSS-D), the Rhinosinusitis Outcome Measure-31 (ROM-31), and the SNOT-16 [ 17].
This was both a strength, in that it enables comparisons between differently sourced samples (although that was not a purpose of the analyses presented here), and a weakness in that representativeness is an absolute requirement for external validity.
Again, since normality is a requirement for the validity of χ-based statistics, the non-normality displayed by many residues even under very large sample sizes (> 500 clones) calls the validity of such analyses into question.
Thus, the requirement for the validity of the diffusion approximation theory is satisfied for the dynamic samples when the source-detector separation is in the order of 10 mm.
We applied the Rasch method to the Generic factor, the Cancer-specific factor, and the BOC factor separately, to ensure that the scales were unidimensional [ 24] as this is a fundamental requirement for construct validity.
Although those items are important to insure the objectivity of and regulations for the conduct of the study, they are unlikely to directly affect the results of the experiments or to allow others to replicate their experiments, a traditional requirement for scientific validity.
Requirements for the validity of a popular vote may also vary from a majority of voters to qualified or double majorities or to specific turnout quorums.
