As is well understood among clinical researchers, medical diagnoses often suffer from substantial measurement error. This is particularly true for mental health diagnoses.1 Reliance on inaccurate diagnosis indicators can substantially compromise researchers’ and clinicians’ ability to reliably evaluate treatment approaches, measure clinical progress, or estimate relationships between patient at...

In study of intra-individual variation of serum constituents, we used analysis of variance to separate biological from analytical variation, the latter being estimated from results for duplicate specimens. However, the replication error term in such a model may grossly overestimate instrumental variability, especially when a significant pre-instrumental error component is present. To separate p...

The problem of mathematical description the influence harmful deterministic and broadband random vibrations a moving object on measurement result sensor angular velocity rotation this installed it is considered. It shown that under such conditions systematic instrumental vibration error arises in sensor. source nonlinearity static conversion function asymmetry its coefficient.
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