Supplemental Digital Content is Available in the Text. Background and Purpose: The Life Space Assessment (LSA) is a self-report measure that allows clinicians to determine how often someone moves around in his or her environment with or without assistance. Presently, there are no reliable and valid measures that capture all 3 aspects of mobility (ie, mobility frequency, distance, and assistance needed) for individuals with vestibular disorders. The purpose of this study was to describe life space and to determine the reliability and concurrent validity of the LSA as a tool to measure mobility and function in individuals with balance and vestibular disorders. Methods: One hundred twenty-eight participants (mean age of 55 ± 16.7 years) experiencing dizziness or imbalance who were seeking the care of an otoneurologist were recruited. Participants completed the LSA, Dizziness Handicap Inventory (DHI), and the 12-Item Short Form Health Survey (SF-12). Results: The mean LSA score of the sample was 75/120 ± 30. The LSA demonstrated excellent test-retest reliability (intraclass correlation coefficient = 0.91). The LSA was negatively correlated with the DHI total score (ρ = −0.326, P < 0.01), DHI physical subscore (ρ = −0.229, P = 0.02), DHI functional subscore (ρ = −0.406, P < 0.01), and DHI emotional subscore (ρ = −0.282, P < 0.01). The LSA was positively correlated with both the physical (ρ = 0.422, P < 0.01) and mental (ρ = 0.362, P < 0.01) composite scores of the SF-12. Discussion and Conclusions: Similar to the findings in community-dwelling older adults, the LSA demonstrated excellent test-retest and internal consistency in individuals with vestibular disorders. The LSA is a valid and reliable tool for measuring mobility and function in individuals with vestibular disorders. Video Abstract available for more insights from the authors (see Video, Supplemental Digital Content 1, available at: http://links.lww.com/JNPT/A317).

中文翻译：

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前庭疾病患者生活空间评估的可靠性和同时效度

补充数字内容在文本中可用。背景和目的：生活空间评估 (LSA) 是一种自我报告测量，它允许临床医生确定有人在有帮助或没有帮助的情况下在他或她的环境中走动的频率。目前，没有可靠和有效的措施可以涵盖前庭障碍患者的所有 3 个方面的活动能力（即活动频率、距离和所需帮助）。本研究的目的是描述生活空间，并确定 LSA 作为衡量平衡和前庭障碍患者活动能力和功能的工具的可靠性和同时效度。方法：招募了 128 名正在寻求耳神经科医生护理的头晕或失衡的参与者（平均年龄为 55 ± 16.7 岁）。参与者完成了 LSA、头晕障碍量表 (DHI) 和 12 项简表健康调查 (SF-12)。结果：样本的平均 LSA 得分为 75/120 ± 30。LSA 表现出出色的重测信度（组内相关系数 = 0.91）。LSA 与 DHI 总分（ρ = -0.326，P < 0.01）、DHI 身体分项（ρ = -0.229，P = 0.02）、DHI 功能分项（ρ = -0.406，P < 0.01）和DHI 情绪评分 (ρ = -0.282, P < 0.01)。LSA 与 SF-12 的身体 (ρ = 0.422, P < 0.01) 和心理 (ρ = 0.362, P < 0.01) 综合得分呈正相关。讨论和结论：与社区居住的老年人的研究结果相似，LSA 在前庭障碍患者中表现出出色的重测和内部一致性。LSA 是一种有效且可靠的工具，用于测量前庭障碍患者的活动能力和功能。视频摘要可提供作者的更多见解（参见视频，补充数字内容 1，可在：http://links.lww.com/JNPT/A317 获得）。