The main aim of this study was to assess the reliability and validity of a food frequency questionnaire with 23 food groups (I-FFQ) among a sample of 9–11-year-old children from three different ...

Objective —To assess the test-retest reliability and validity of the physical activity questions in the World Health Organisation health behaviour in schoolchildren (WHO HBSC) survey. Methods —In the ...

The objective of this study was to determine the interobserver reliability, intraobserver reliability, and predictive validity of the Spinal Instability Neoplastic Score (SINS). Methods Clinical and ...

In Phase I of a possible two-phase study, a n ad hoc committee will 1) critically assess the existing body of scientific research as it relates to eyewitness identification; 2) identify any gaps in ...

Reliability and Validity of the Functional Assessment of Cancer Therapy–Ovarian Karen Basen-Engquist , Diane Bodurka-Bevers , Mary A. Fitzgerald , Kimberly Webster , David Cella , Shaohua Hu , David M ...

Half the sample completed the past-week question and half completed the past-month version. Test–retest reliability was assessed over a 2- to 5-day period. Concurrent validity was assessed using the ...

Recent studies show that translation can affect data validity and reliability. An inadequate approach may result in translated materials that don’t work as intended.