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...

Every three years, Indonesia fields simultaneously two nationwide surveys which collect consumption data. One collects consumption using 23 questions, the other using 320 questions. Based on a repeated experiment in which the two questionnaires were randomly assigned across households, I examine the consequences of using a higher level of aggregation in questioning. A mapping of distribution fu...

Longitudinal data enables detecting the effect of aging/time, and as a repeated measures design is statistically more efficient compared to cross-sectional data if the correlations between repeated measurements are not large. In particular, when genotyping cost is more expensive than phenotyping cost, the collection of longitudinal data can be an efficient strategy for genetic association analy...

Background Among all malignances, leukemia has the greatest effects on patients 'psychological aspects. Anxiety is common problem in leukemia patients (especially in children). Since no study has addressed the effect of Slow-stroke back massage (SSBM) on anxiety in the pediatrics with chronic leukemia, this investigation aimed to controlling anxiety through a non-drug method (such as SSBM) in c...

Bachground: Today, some treatments like neurofeedback and Vitamin D Supplementation are of great importance in treatment of Attention-Deficit/Hyperactivity Disorder (ADHD). Present literature showed efficacy each of them. For determination of efficacy of combined treatment, this study aims to compare the efficacy of each of them with combined neurofeedback and vitamin D supplementation in the t...

AIMS To assess the reliability of percentage ideal weight for height (%WFH) as a measure in children. METHODS Forty two dietitians calculated %WFH of six children. Eleven of the 42 repeated the calculations. RESULTS Interexaminer estimates varied by 16.5 to 40 percentage points (mean 27.8). Intraexaminer variability was also large. CONCLUSIONS %WFH is an unreliable measure of nutritional ...

Introduction: Directly observed procedural skills (DOPS) is aunique method for assessment since it tests the trainee’s abilityto apply his knowledge and skills in performing a particularprocedure and provides an assessment of the practical workperformed by the trainee on a ‘real’ patient under supervisionof an experienced faculty. The study aims to make use of DOPSrating for assessment and furt...

BACKGROUND Lower extremity physical performance measured at one point in time is a powerful predictor of future disability. Whether information on previous lower extremity performance adds independent information to disability prediction compared to a single measure alone is unknown. METHODS Data are from community-dwelling men and women aged greater than or equal to 65 years enrolled in the ...

In many clinical trials, treatment efficacy is based upon response to a biological marker that is measured repeatedly during the course of follow-up. However, in some of these trials it is not clear, a priori, how treatment effects on the marker may manifest themselves or what kinds of effects are clinically meaningful and/or acceptable. It is, therefore, desirable to allow flexibility in desig...