Abstract：
BACKGROUND: The Sheehan Disability Scale (SDS) and the World Health Organization Disability Assessment Scale (WHODAS 2.0) have been widely used to measure functional impairment and disability. To ensure that the scores from these two scales are practically exchangeable across diseases, therapies, and care programmes, the current study aimed to examine the linkage of the WHODAS 2.0 with the SDS and develop a simple and reliable conversion table for the two scales in people with mental disorders.
METHODS: A total of 798 patients (mean age = 36.1, SD = 12.7) were recruited from outpatient clinics of the Institute of Mental Health, and the Community Wellness Clinic in Singapore. Using a single-group design, an equipercentile equating method with log-linear smoothing was used to establish a conversion table from the SDS to the WHODAS 2.0 and vice versa.
RESULTS: The conversion table showed that the scores were consistent for the entire range of scores when the scores were converted either from the SDS to the WHODAS 2.0 or from the WHODAS 2.0 to the SDS. The agreement between the WHODAS 2.0\'s raw and converted scores and SDS\'s raw and converted scores were interpreted as good with intraclass correlation coefficient of 0.711 and 0.725, respectively.
CONCLUSIONS: This study presents a simple and reliable method for converting the SDS scores to the WHODAS 2.0 scores and vice versa, enabling interchangeable use of data across these two disability measures.
METHODS: A total of 798 patients (mean age = 36.1, SD = 12.7) were recruited from outpatient clinics of the Institute of Mental Health, and the Community Wellness Clinic in Singapore. Using a single-group design, an equipercentile equating method with log-linear smoothing was used to establish a conversion table from the SDS to the WHODAS 2.0 and vice versa.
RESULTS: The conversion table showed that the scores were consistent for the entire range of scores when the scores were converted either from the SDS to the WHODAS 2.0 or from the WHODAS 2.0 to the SDS. The agreement between the WHODAS 2.0\'s raw and converted scores and SDS\'s raw and converted scores were interpreted as good with intraclass correlation coefficient of 0.711 and 0.725, respectively.
CONCLUSIONS: This study presents a simple and reliable method for converting the SDS scores to the WHODAS 2.0 scores and vice versa, enabling interchangeable use of data across these two disability measures.
摘要：
背景：Sheehan残疾量表（SDS）和世界卫生组织残疾评估量表（WHODAS2.0）已被广泛用于测量功能损害和残疾。为了确保这两个量表的分数在疾病之间实际上是可交换的，疗法,和护理计划，本研究旨在检验WHODAS2.0与SDS的联系,并为精神障碍患者的两种量表建立简单可靠的转换表.
方法：从心理健康研究所的门诊招募了798名患者（平均年龄=36.1，SD=12.7），新加坡社区健康诊所。使用单组设计，采用带对数线性平滑的等百分位数方法建立SDS至WHODAS2.0的转换表,反之亦然.
结果：转换表显示，当分数从SDS转换为WHODAS2.0或从WHODAS2.0转换为SDS时，整个分数范围的分数是一致的。WHODAS2.0的原始和转换分数与SDS的原始和转换分数之间的一致性被解释为良好，组内相关系数分别为0.711和0.725。
结论：这项研究提供了一种简单可靠的方法，可以将SDS评分转换为WHODAS2.0评分，反之亦然。允许在这两种残疾衡量标准中互换使用数据。
方法：从心理健康研究所的门诊招募了798名患者（平均年龄=36.1，SD=12.7），新加坡社区健康诊所。使用单组设计，采用带对数线性平滑的等百分位数方法建立SDS至WHODAS2.0的转换表,反之亦然.
结果：转换表显示，当分数从SDS转换为WHODAS2.0或从WHODAS2.0转换为SDS时，整个分数范围的分数是一致的。WHODAS2.0的原始和转换分数与SDS的原始和转换分数之间的一致性被解释为良好，组内相关系数分别为0.711和0.725。
结论：这项研究提供了一种简单可靠的方法，可以将SDS评分转换为WHODAS2.0评分，反之亦然。允许在这两种残疾衡量标准中互换使用数据。
