A statistical method is given for the combination of measurement results in an interlaboratory comparison to obtain a summary reference value and its uncertainty. The method allows objective treatment of measurements suspected of being outliers and objective treatment of measurements with individual uncertainties that appear overly optimistic. This is achieved by assuming that the measurement p...

OBJECTIVE To determine the within subject (day to day) variability for variables reflecting iron status (concentrations of ferritin and soluble transferrin receptor (sTfR), and the sTfR/logFerr index) in female athletes during a training camp, and in female control subjects. RESULTS The error for ferritin concentration was nearly twice as high in athletes as in controls, that for sTfR concent...

OBJECTIVE One of the major issues in the use of spirometry is the evaluation of the values obtained in comparison with standardized reference values. Such reference values should be determined by studying populations similar to the population in which they are intended to be used. Considering the anthropometric differences among races and the effect of regional issues, such as climate and air q...

tematic evaluation of the RV in the pediatric population and want to encourage their research with new echocardiographic parameters, such as the RVWD. Their current work will enhance our knowledge about the normal RV functional pattern in childhood.1 I hope that with more and more available normal reference values and Z-scores for the pediatric population that quantification of RV function will...

Blood lead concentrations of Koreans who have not been exposed to lead occupationally, show a wide range of variation. Despite the fact that blood lead concentration reveals a long-normal distribution, geometric means and standard deviations have not been presented in almost all studies on blood lead levels in Koreans. A new meta-analytical method was applied to estimate the theoretical geometr...

The aim of this study was to validate a wearable inertial measurement unit (IMU), containing a 3D accelerometer and gyroscope, for the estimation of countermovement jump height. The absolute vertical acceleration of the IMU positioned on the back of the participant at L5 level, compensated for trunk rotations, was used to obtain jump height by applying the equation of free-fall to the motion of...

Because of the importance of the absorption cross-sections of ozone in the atmosphere. we give a new set of data at ambient temperature for the whole spectral region within the 195-345 nm range. Two new methods have been investigated for the experiments to measure the ozone pressures. Our results are compared with all of the previous data. The agreement between the more recent works is relative...

Cross-sectional covariate-related reference ranges are widely used in clinical medicine to put individual observations in the context of population values. Usually, such reference ranges are created from data sets of independent observations. If multiple measurements per individual are available, then ignoring the within-person correlation between repeats will lead to overestimation of centile ...

THE PURPOSE OF THIS PAPER WAS a) to provide reference values for the standing spike test for female volleyball players and b) to study whether the standing spike test is valid for assessing the theoretical differences between female volleyball players. The sample included 83 players from the first nine teams of the Spanish women's first volleyball division (52 Spanish players and 31 from other ...