BACKGROUND The Geriatric Oral Health Assessment Index (GOHAI) was developed and validated in 1990 and translated into Spanish in 1999. Since then, the original version has been used in numerous studies, but it has not been re-evaluated in terms of language in the new generations of older adults. The purpose of this study is to confirm the validity of the Spanish version of the Geriatric Oral Health Assessment Index (GOHAI-SP) after three decades to be used as part of an ongoing field trial. METHODS The GOHAI-SP was pilot tested in a focus group to confirm linguistic comprehension. A version with minor language changes was administered to individuals with metabolic syndrome aged 55-75 years from one health care district in southern Spain as part of an ongoing field trial (PREDIMED-Plus). Clinical evaluation included assessment of dental and periodontal status. The psychometric properties of the GOHAI-SP were evaluated through stability and internal consistency measures, and concurrent and discriminant validity were assessed. RESULTS The new version of the GOHAI-SP was administered to 100 individuals. The application time was reduced by 7 min. The alpha value for reliability was 0.87. The item-scale correlation coefficients ranged from 0.54 to 0.75, and the test-re-test correlation for the total score was 0.75. There were inverse correlations between GOHAI-SP scores and the number of lost teeth and the decayed-missing-filled teeth index (p < 0.001). CONCLUSIONS The GOHAI-SP questionnaire remains a valid and useful tool to assess oral health-related quality of life in primary health care settings. A linguistic update of the questionnaire brought improvements to the instrument application. TRIAL REGISTRATION The PREDIMED-Plus trial is registered in the ISRCTN registry with reference number ISRCTN89898870. Registration date: 4th July 2014.

中文翻译：

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针对成年人和老年人的西班牙老年人口腔健康评估指数（GOHAI-SP）修改版本的验证。

背景技术老年人口腔健康评估指数（GOHAI）于1990年开发和验证，并于1999年被翻译成西班牙文。此后，原始版本已在众多研究中使用，但尚未对其语言进行重新评估。新一代的老年人。这项研究的目的是要确认西班牙版《老年口腔健康评估指数》（GOHAI-SP）在三十年后用作正在进行的现场试验的有效性。方法GOHAI-SP在一个焦点小组中进行了试点测试，以确认其语言理解能力。作为正在进行的现场试验（PREDIMED-Plus）的一部分，从西班牙南部的一个医疗保健区向年龄在55-75岁的代谢综合症患者使用了语言稍有改动的版本。临床评估包括牙齿和牙周状况的评估。通过稳定性和内部一致性测量评估了GOHAI-SP的心理测量特性，并评估了并发和区分效度。结果GOHAI-SP的新版本管理了100个人。施用时间减少了7分钟。可靠性的alpha值为0.87。项目规模的相关系数介于0.54至0.75之间，总分的重测相关系数为0.75。GOHAI-SP评分与丢失的牙齿数量和蛀牙缺失的牙齿指数之间呈负相关（p <0.001）。结论GOHAI-SP问卷仍然是评估初级卫生保健环境中口腔健康相关生活质量的有效工具。问卷的语言更新带来了仪器应用的改进。试用注册PREDIMED-Plus试用已在ISRCTN注册中心注册，参考号为ISRCTN89898870。报名日期：2014年7月4日。