Asoegwu C N, Nwawolo C C, Okubadejo N U
Department of Otorhinolaryngology, Lagos University Teaching Hospital, Idi Araba, Lagos State, Nigeria.
Department of Medicine, Lagos University Teaching Hospital, Idi Araba, Lagos State, Nigeria.
Eur Arch Otorhinolaryngol. 2017 Jul;274(7):2765-2771. doi: 10.1007/s00405-017-4518-7. Epub 2017 Mar 14.
The Rhinosinusitis Disability Index (RSDI) is a validated and reliable measure of severity of chronic rhinosinusitis. The objective of this study was to translate and validate the instrument for use in Nigeria. This is a methodological study. 71 patients with chronic rhinosinusitis attending two Otolaryngology clinics in Lagos, Nigeria. Using standardized methods and trained translators, the RSDI was translated to vernacular (Yoruba language) and back-translated to culturally appropriate English. Data analysis comprised of assessment of the item quality, content validity and internal consistency of the back-translated Rhinosinusitis Disability Index (bRSDI), and correlation to the original RSDI. Content validity (floor and ceiling effects) showed 0% floor and ceiling effects for the total scores, 0% ceiling effects for all domains and floor effect for physical domain, and 9.9 and 8.5% floor effects for functional and emotional domains, respectively. The mean item-own correlation for physical domain was 0.54 ± 0.08, 0.72 ± 0.08 for functional domain and 0.74 ± 0.07 for emotional domain. All domain item-own correlations were higher than item-other domain correlations. The total Cronbach's alpha was 0.936 and was higher than 0.70 for all the domains representing good internal consistency. Pearson correlation analysis showed strong correlation of RSDI to bRSDI (total score 0.881; p = 0.000, and domain subscores-physical: 0.788; p = 0.000, functional: 0.830; p = 0.000, and emotional: 0.888; p = 0.000). The back-translated Rhinosinusitis Disability Index shows good face and content validity with good internal consistency while correlating linearly and significantly with the original Rhinosinusitis Disability Index and is recommended for use in Nigeria.
鼻-鼻窦炎残疾指数（RSDI）是一种经过验证且可靠的慢性鼻-鼻窦炎严重程度测量工具。本研究的目的是对该工具进行翻译并验证其在尼日利亚的适用性。这是一项方法学研究。71例慢性鼻-鼻窦炎患者在尼日利亚拉各斯的两家耳鼻喉科诊所就诊。采用标准化方法并由经过培训的翻译人员将RSDI翻译成当地语言（约鲁巴语），然后再回译成符合文化习惯的英语。数据分析包括对回译后的鼻-鼻窦炎残疾指数（bRSDI）的项目质量、内容效度和内部一致性进行评估，并与原始RSDI进行相关性分析。内容效度（地板效应和天花板效应）显示，总分的地板效应和天花板效应均为0%，所有领域的天花板效应为0%，身体领域有地板效应，功能和情感领域的地板效应分别为9.9%和8.5%。身体领域的平均项目-自身相关性为0.54±0.08，功能领域为0.72±0.08，情感领域为0.74±0.07。所有领域的项目-自身相关性均高于项目-其他领域相关性。总的Cronbach's α为0.936，所有领域均高于0.70，表明内部一致性良好。Pearson相关性分析显示RSDI与bRSDI有很强的相关性（总分0.881；p = 0.000，领域子分数-身体：0.788；p = 0.000，功能：0.830；p = 0.000，情感：0.888；p = 0.000）。回译后的鼻-鼻窦炎残疾指数具有良好的表面效度和内容效度，内部一致性良好，同时与原始鼻-鼻窦炎残疾指数呈线性且显著相关，建议在尼日利亚使用。
