Health Qual Life Outcomes. 2013 Jul 26;11:126. doi: 10.1186/1477-7525-11-126.
The Upper Limb Functional Index (ULFI) is an internationally widely used outcome measure with robust, valid psychometric properties. The purpose of study is to develop and validate a ULFI Spanish-version (ULFI-Sp).
A two stage observational study was conducted. The ULFI was cross-culturally adapted to Spanish through double forward and backward translations, the psychometric properties were then validated. Participants (n = 126) with various upper limb conditions of >12 weeks duration completed the ULFI-Sp, QuickDASH and the Euroqol Health Questionnaire 5 Dimensions (EQ-5D-3 L). The full sample determined internal consistency, concurrent criterion validity, construct validity and factor structure; a subgroup (n = 35) determined reliability at seven days.
The ULFI-Sp demonstrated high internal consistency (α = 0.94) and reliability (r = 0.93). Factor structure was one-dimensional and supported construct validity. Criterion validity with the EQ-5D-3 L was fair and inversely correlated (r = -0.59). The QuickDASH data was unavailable for analysis due to excessive missing responses.
The ULFI-Sp is a valid upper limb outcome measure with similar psychometric properties to the English language version.
上肢功能指数（ULFI）是一种国际上广泛使用的结果测量工具，具有可靠、有效的心理测量学特性。本研究的目的是开发和验证 ULFI 的西班牙语版本（ULFI-Sp）。
进行了两阶段观察性研究。通过双重正向和反向翻译，对 ULFI 进行跨文化适应性调整，然后验证其心理测量学特性。各种上肢疾病持续时间>12 周的参与者（n=126）完成了 ULFI-Sp、QuickDASH 和欧洲五维健康量表 3 维度（EQ-5D-3L）。全样本确定了内部一致性、同时效标效度、结构效度和因子结构；一个亚组（n=35）在七天时确定了可靠性。
ULFI-Sp 表现出较高的内部一致性（α=0.94）和可靠性（r=0.93）。因子结构为一维，支持结构效度。与 EQ-5D-3L 的效标效度为中等，呈负相关（r=-0.59）。由于过多的缺失反应，QuickDASH 数据无法进行分析。
ULFI-Sp 是一种有效的上肢结果测量工具，其心理测量学特性与英语版本相似。
