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Farzaneh Ketabchi - One of the best experts on this subject based on the ideXlab platform.
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on summary Measure Analysis of linear trend repeated Measures data performance comparison with two competing methods
BMC Medical Research Methodology, 2012Co-Authors: Mehrdad Vossoughi, Smt Ayatollahi, Mina Towhidi, Farzaneh KetabchiAbstract:Background The summary Measure approach (SMA) is sometimes the only applicable tool for the Analysis of repeated Measurements in medical research, especially when the number of Measurements is relatively large. This study aimed to describe techniques based on summary Measures for the Analysis of linear trend repeated Measures data and then to compare performances of SMA, linear mixed model (LMM), and unstructured multivariate approach (UMA).
Younsuk Lee - One of the best experts on this subject based on the ideXlab platform.
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What Repeated Measures Analysis of Variances Really Tells Us
Korean journal of anesthesiology, 2015Co-Authors: Younsuk LeeAbstract:This article examined repeated Measures Analysis of variance (RMANOVA). Within-subjects repeated Measurements are unavoidable during clinical and experimental investigation, and between- and within-subject variability should be treated separately. Only through proper use and meticulous interpretation can ethical and scientific integrity be guaranteed. The philosophical background of, and knowledge pertaining to, RMANOVA are described in the first half of this text. The sphericity assumption and associated issues are discussed in the latter half. The final section provides a summary Measure Analysis, which was neglected by P value-dependent interpreters.
Mehrdad Vossoughi - One of the best experts on this subject based on the ideXlab platform.
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on summary Measure Analysis of linear trend repeated Measures data performance comparison with two competing methods
BMC Medical Research Methodology, 2012Co-Authors: Mehrdad Vossoughi, Smt Ayatollahi, Mina Towhidi, Farzaneh KetabchiAbstract:Background The summary Measure approach (SMA) is sometimes the only applicable tool for the Analysis of repeated Measurements in medical research, especially when the number of Measurements is relatively large. This study aimed to describe techniques based on summary Measures for the Analysis of linear trend repeated Measures data and then to compare performances of SMA, linear mixed model (LMM), and unstructured multivariate approach (UMA).
Gary J. Rottman - One of the best experts on this subject based on the ideXlab platform.
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On the Failure of Standard Emission Measure Analysis for Solar Extreme-Ultraviolet and Ultraviolet Irradiance Spectra
The Astrophysical Journal, 1995Co-Authors: Philip G. Judge, Thomas N. Woods, P. Brekke, Gary J. RottmanAbstract:We perform emission Measure Analysis of new and accurate UV (λ > 1200 A) and extreme-ultraviolet (EUV) (λ ≤ 1200 A) irradiance ("Sun-as-a-star") emission-line spectra of the Sun. Our data consist of (1) daily averaged UV irradiances from the SOLSTICE on the UARS spacecraft and (2) EUV irradiances obtained on the same date from a m spectrograph flown on a sounding rocket. Both instruments have a spectral resolution of roughly 1 A. The absolute uncertainties in these data are at most ±15% ( ± 2 σ), one of the highest photometric accuracies yet achieved. We find large, highly significant and systematic discrepancies in the emission Measure Analysis of transition region lines which can only be accounted for by a breakdown of one or more standard assumptions. All strong lines above 1000 A, which are from the Li and Na isoelectronic sequences, are too strong by factors of between 2.5 and 7 compared with their counterparts in the EUV region. Previous studies were tantalizingly close to finding these discrepancies, but those data lacked the wavelength coverage and relative photometric precision necessary for definitive conclusions. We argue that either dynamical effects, inaccurate treatments of atomic processes, and/or Lyman continuum absorption are the culprits. However, we favor the former explanation. In any event, this study should have implications for models of the solar transition region, for observing programs with the CDS and SUMER instruments on SOHO, and for Analysis of UV spectra for stars across the cool half of the H-R diagram. Finally, the discrepancy is not seen for the "coronal" Li-like ions.
Mina Towhidi - One of the best experts on this subject based on the ideXlab platform.
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on summary Measure Analysis of linear trend repeated Measures data performance comparison with two competing methods
BMC Medical Research Methodology, 2012Co-Authors: Mehrdad Vossoughi, Smt Ayatollahi, Mina Towhidi, Farzaneh KetabchiAbstract:Background The summary Measure approach (SMA) is sometimes the only applicable tool for the Analysis of repeated Measurements in medical research, especially when the number of Measurements is relatively large. This study aimed to describe techniques based on summary Measures for the Analysis of linear trend repeated Measures data and then to compare performances of SMA, linear mixed model (LMM), and unstructured multivariate approach (UMA).