To create self-report physical function (PF) measures for children using modern psychometric methods for item analysis as part of patient-reported outcomes measurement information system (PROMIS).
Item Analysis for Criterion-Referenced Tests.
The descriptive statistics, item analysis, and factor analysis for each item are presented in Table 1.
The combination of classical and modern (item response theory) statistical analyses was used at this point.
Additional file 1: Item analysis.
The 154-item PROMIS PF item bank was developed using classic and modern item assessment methods [ 12, 14] and includes the 20-item stems of the original HAQ and the 10-item stems of the original PF10.
After item analysis in stage 3, we kept 45 items.
For other technologies, designers conceptualized using 18th-century technology to build modern items and vehicles, and creating 18th-century items using modern tools.
This initial study applied systematic modern item-assessment methods to develop the PROMIS Physical Function item bank.
