Unrealistic steady-state assumptions are often used to estimate toxicant exposure rates from biomarkers. A biomarker may instead be modeled as a weighted sum of historical time-varying exposures. Estimating equations are derived for a zero-inflated gamma distribution for daily exposures with a known exposure frequency. Simulation studies suggest th...
Published in Archives of Physical Medicine and Rehabilitation
Hicks GE. Invited commentary on “low interrater reliability of examiners performing the prone instability test: a clinical test for lumbar shear instability.” The stated purpose of the article by Ravenna and colleagues is to examine the reliability of the prone instability test (PIT) in the hands of novice clinicians, as previous reliability studie...
Global sensitivity analysis of a numerical code, more specifically estimation of Sobol indices associated with input variables, generally requires a large number of model runs. When those demand too much computation time, it is necessary to use a reduced model (metamodel) to perform sensitivity analysis, whose outputs are numerically close to the o...
Published in Automatic Control and Computer Sciences
Problems of estimating the confidence intervals of human face geometry characteristics for people identification based on photo portraits are considered. The importance of a given problem is emphasized at the identification precision determination. To define the confidence intervals of geometry characteristics, the well-known Student method is used...
Published in Archives of Physical Medicine and Rehabilitation
Hush JM, Lin CC, Michaleff ZA, Verhagen A, Refshauge KM. Prognosis of acute idiopathic neck pain is poor: a systematic review and meta-analysis. Objective To conduct a systematic review and meta-analysis on the prognosis of acute idiopathic neck pain and disability. Data Sources EMBASE, CINAHL, Medline, AMED, PEDro, and CENTRAL were searched from i...
Published in Radiation research
Well-defined protocols and quality management standards are indispensable for biological dosimetry laboratories. Participation in periodic proficiency testing by interlaboratory comparisons is also required. This harmonization is essential if a cooperative network is used to respond to a mass casualty event. Here we present an international interco...
Published in Archives of Physical Medicine and Rehabilitation
Szabo AN, Mullen SP, White SM, Wojcicki TR, Mailey EL, Gothe N, Olson EA, Fanning J, Kramer AF, McAuley E. Longitudinal invariance and construct validity of the abbreviated Late-Life Function and Disability Instrument in healthy older adults. Objective To cross-validate the psychometric properties of the abbreviated Late-Life Function and Disabilit...
Published in Archives of Physical Medicine and Rehabilitation
Gremeaux V, Troisgros O, Benaïm S, Hannequin A, Laurent Y, Casillas J-M, Benaïm C. Determining the minimal clinically important difference for the six-minute walk test and the 200-meter fast-walk test during cardiac rehabilitation program in coronary artery disease patients after acute coronary syndrome. Objective To estimate the minimal clinically...
Published in The Annals of Thoracic Surgery
Background Perioperative acute kidney injury (AKI) is associated with increased mortality and morbidity. Our aim was to evaluate the incidence and determinants of AKI using the risk, injury, failure, loss of function, and end-stage kidney disease (RIFLE) criteria in thoracic surgical patients. Methods We retrospectively analyzed a cohort of patient...
Little is known about the distribution of the 'value-at-risk' (VaR) estimate and the associated estimation risk. In the case of the normal VaR, the key problem comes from the fact that it is estimated using a couple of parameters whose estimates are distributed differently. Previous research has either neglected uncertainty around the mean paramete...
