BACKGROUND AND OBJECTIVES Creatinine excretion rate (CER) indicates timed urine collection accuracy. Although equations to estimate CER exist, their bias and precision are untested and none simultaneously include age, sex, race, and weight. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS Participants (n = 2466) from three kidney disease trials were randomly allocated into equation development (...

AIM The study aimed to provide information about the concurrent and discriminant validation of the Scale of Evaluation of Reading Competence by the Teacher (EACOL), which is composed of 27 dichotomous items concerning reading aloud (17 items) and reading silently (10 items). SAMPLES Three samples were used in this validation study. The first was composed of 335 students with an average age of...

OBJECTIVE To develop a prognostic model to predict mobility outcome one year post-stroke. DESIGN Prospective cohort study in patients with a first-ever stroke admitted for inpatient rehabilitation. PATIENTS A total of 217 patients with stroke (mean age 58 years) following inpatient rehabilitation in 4 rehabilitation centres across the Netherlands. METHODS Mobility was measured using the R...

This paper presents the validation of pre-customized UI design in a personalization approach for digital television. Two user studies are conducted using different age groups. It is found that users do not want to be segmented into specific age groups. However, the user’s task performance using the features of digital television varies depending on the age. There are considerable factors of pre...

M e t h o d s Design: 2 cohort studies, 1 for derivation and 1 for validation (Acute Decompensated Heart Failure National Registry [ADHERE]). Setting: 263 centers in the United States. Patients: Patients in the ADHERE registry were ≥ 18 years of age and had new-onset ADHF or decompensation of chronic HF with symptoms severe enough to require hospitalization. 33 046 hospitalizations (mean age 73...

SEER data and a Bronx validation cohort demonstrate that Hispanics present with AML at younger age but have shorter survival than whites.Increased frequency of high-risk mutations in Hispanics provides a potential biologic explanation for poorer outcomes in Hispanics.

M e t h o d s Design: 2 cohort studies, 1 for derivation of a nomogram (St. James Women Take Heart Project [SJWTHP]) and 1 for validation (Economics of Noninvasive Diagnosis Study [ENDS]). Setting: Metropolitan Chicago (SJWTHP) and 6 medical centers in the United States (ENDS). Patients: The derivation cohort included 5721 women ≥ 35 years of age (mean age 52 y) with the ability to walk on a tr...

Age differences in the useful field of view (UFOV) were assessed during real-world driving using a newly developed car-following protocol. Nineteen young (mean age = 23) and 19 older (mean age = 73) drivers were examined. Peripheral target detection performance declined significantly with age and target eccentricity. However, consistent with several recent studies, no age by target eccentricity...

the present work describes a reverse phase hplc method for the quantitation of drotaverine hydrochloride and mefenamic acid in human plasma. organic solvent system used for liquid extraction composed of dichloromethane, and isopropyl alcohol in the ratio 80:20 (v/v). the compounds were separated on a thermo bds hypersil c8 (25.0 cm×4.6 mm, 5 µm particle size) column in isocratic mode with a mix...

objective(s): reliability measures precision or the extent to which test results can be replicated. this is the first ever systematic review to identify statistical methods used to measure reliability of equipment measuring continuous variables. this studyalso aims to highlight the inappropriate statistical method used in the reliability analysis and its implication in the medical practice.   m...