Exact(1)
Creatinine, an alternative means of adjusting for dilution, was not measured in samples, because it varies considerably by age and sex (James et al. 1988).
Similar(59)
It varies considerably from person to person so there's no simple answer.
Moreover, accounts of Jane's behavior and the circumstances that provoked it vary considerably.
It should be noted, however, that it is difficult to conduct research on NSs because product composition varies considerably from manufacturer to manufacturer, and different products have been studied.
The problem of determining the cost of any scheme is often difficult, because the cost varies considerably with time and tariff conditions.
Because wood density varies considerably between sites (Palmer et al. 2013), a normally distributed site-level random term with a mean of zero, L, was included in the model to account for local site effects.
Unfortunately, the spot urine Na/Cr ratio has inherent limitations in estimating 24 h sodium excretion because sodium excretion varies considerably from hour to hour.
Because life history varies considerably across the plant phylogeny, future work on paleopolyploidy will need to account for rate heterogeneity to place duplications more accurately in phylogenetic context as presented here and in Barker et al. (2008) or with reconciliation approaches as in Pfeil et al. (2005).
Because genome size often varies considerably even among closely related species, accurate species determination is an essential prerequisite for any studies addressing the role of this cytogenetic parameter.
Also, because exposure to OPs varies considerably from day to day, DAPs from spot urine samples may not represent average exposure over time.
Its prevalence in pregnancy varies considerably because of the differences in, for example, socioeconomic conditions, lifestyles, and health-seeking behaviours across different cultures.
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