Neurorehabilitation Research Laboratory, IRCCS San Raffaele Pisana , Rome, Italy.
School of Physical and Occupational Therapy, McGill University , Montreal, Canada.
Brain Inj. 2020 Dec 5;34(13-14):1741-1755. doi: 10.1080/02699052.2020.1836402. Epub 2020 Nov 12.
Previous analyses demonstrated a lack of unidimensionality, item redundancy, and substantial administrative burden for the Brain Injury Rehabilitation Trust Personality Questionnaires (BIRT-PQs).
To use Rasch Analysis to calibrate five short-forms of the BIRT-PQs, satisfying the Rasch model requirements.
BIRT-PQs data from 154 patients with severe Acquired Brain Injury (s-ABI) and their caregivers (total sample = 308) underwent Rasch analysis to examine their internal construct validity and reliability according to the Rasch model.
The base Rasch analyses did not show sufficient internal construct validity according to the Rasch model for all five BIRT-PQs. After rescoring 18 items, and deleting 75 of 150 items, adequate internal construct validity was achieved for all five BIRT-PQs short forms (model chi-square -values ranging from 0.0053 to 0.6675), with reliability values compatible with individual measurements.
After extensive modifications, including a 48% reduction of the item load, we obtained five short forms of the BIRT-PQs satisfying the strict measurement requirements of the Rasch model. The ordinal-to-interval measurement conversion tables allow measuring on the same metric the perception of the neurobehavioral disability for both patients with s-ABI and their caregivers.
先前的分析表明，脑损伤康复信托人格问卷（BIRT-PQs）缺乏单一维度、项目冗余和大量行政负担。
使用 Rasch 分析来校准 BIRT-PQs 的五个简短形式，以满足 Rasch 模型的要求。
对 154 名严重获得性脑损伤（s-ABI）患者及其照顾者（总样本=308）的 BIRT-PQs 数据进行 Rasch 分析，根据 Rasch 模型检查其内部结构效度和信度。
根据 Rasch 模型，所有五个 BIRT-PQs 的基础 Rasch 分析均未显示出足够的内部结构效度。在重新评分 18 个项目并删除 150 个项目中的 75 个后，所有五个 BIRT-PQs 简短形式都达到了足够的内部结构效度（模型卡方值范围从 0.0053 到 0.6675），可靠性值与个体测量值兼容。
经过广泛修改，包括项目负荷减少 48%，我们获得了五个满足 Rasch 模型严格测量要求的 BIRT-PQs 简短形式。顺序到区间测量转换表允许在相同的度量上测量患者和照顾者对神经行为障碍的感知。
