ABSTRACT

Background

Previous analyses demonstrated a lack of unidimensionality, item redundancy, and substantial administrative burden for the Brain Injury Rehabilitation Trust Personality Questionnaires (BIRT-PQs).

Objective

To use Rasch Analysis to calibrate five short-forms of the BIRT-PQs, satisfying the Rasch model requirements.

Methods

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.

Results

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 p-values ranging from 0.0053 to 0.6675), with reliability values compatible with individual measurements.

Conclusions

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.

中文翻译：

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“少即是多”：通过Rasch分析对脑损伤康复信托人格问卷（BIRT-PQ）的五种简短形式进行验证

摘要

背景

先前的分析表明，脑损伤康复信托人格问卷（BIRT-PQ）缺乏一维性，项目重复性以及大量的行政负担。

目的

要使用Rasch Analysis来校准五个简短形式的BIRT-PQ，以满足Rasch模型的要求。

方法

对来自154例严重后天性脑损伤（s-ABI）及其护理人员（总样本= 308）的BIRT-PQs数据进行了Rasch分析，以根据Rasch模型检查其内部结构的有效性和可靠性。

结果

根据所有5个BIRT-PQ的Rasch模型，基本的Rasch分析未显示足够的内部结构效度。在对18项进行评分并删除150项中的75项之后，对于所有五种BIRT-PQ短格式（模型卡方p值范围从0.0053到0.6675），都获得了足够的内部构造效度，其可靠性值与各个测量值兼容。

结论

经过广泛的修改（包括将项目负载减少48％），我们获得了五种简短形式的BIRT-PQ，它们满足了Rasch模型的严格测量要求。顺序到间隔的测量转换表允许对患有s-ABI的患者及其护理人员的神经行为残疾感知以相同的度量进行测量。