Transverse scans from head to toe measured absorption of x-ray beams at two different energy levels allowing for a valid determination of lean body mass, fat mass and fat percentage (Lukaski, 1993).
Since the different chemical compounds (bone, fat, and fat-free/bone-free mass) in the body absorb the intensity of the X-rays differently, the scan allows for a valid determination of bone mass, fat mass and fat-free/bone-free mass [ 15].
Overall, we believe that we have carried out a valid determination of the (lack of) role of 11 serum cytokines in primary MS-related fatigue, adjusting for 6 potentially relevant confounders.
This allows for valid and reliable determination of health services outcomes (eg. treatment, costs, survival and place of living/death) but not for QOL and bereavement outcomes.
The developed theoretical approach could be valid for determination of nonlinear optical characteristics of thin films possessing Kerr-like optical nonlinearity, in which the losses on the both absorption and scattering are large, as well as in the either transmission or reflection geometries.
In the present study we found that MTS-1 is valid for determination of gastric transit and small intestinal transit times.
The DAI has been adopted by the World Health Organization (WHO) in an attempt to establish a simple and universally acceptable orthodontic index for use in epidemiological surveys [ 20] and has been reported to be reliable and valid for determination of orthodontic treatment needs [ 21].
The sufficiency of this action is supported by the fact that the current stratification of fitness previously has proven highly valid for the determination of other health outcomes [ 7, 25].
Furthermore, precise and accurate results were found for the analysis of different antimonial pharmaceutical samples, indicating that the methodology developed represents a valid alternative for the determination of antimony in pharmaceuticals, which could be suitable for the routine control analysis.
