Abstract
Introduction: Oral health problems are more chronic and severe. Various instruments have been developed to measure Oral Health Quality of Life. General Oral Health Assessment Index (GOHAI) is a well-established, frequently used questionnaire for measuring OHQoL for geriatric and general population. 
 Objectives: The objective of the study is to translate the GOHAI in Nepali and to assess its reliability and validity. 
 Methodology: This study was conducted on the patient attending department of Prosthodontics, Kathmandu University School of Medical Sciences from March 2017 to February 2018. The GOHAI questionnaire was translated into Nepali version from English and back translated. Nepali version of GOHAI was pilot tested on 50 adult population to test the comprehensibility of the questionnaire, and then required alterations were done. The final Nepali version of GOHAI was administered to 301 (aged 20-70 years) adults along with the self-informed questionnaire. Clinical examination was done on the same day by a single examiner using World Health Organization (WHO) criteria. Reliability was analyzed using test-retest, cronbach alpha and split half reliability. For validity, discriminant validity and construct validity were calculated. 
 Results: Cronbach's alpha was 0.749, which indicated good overall internal consistency and homogeneity. For test-retest, the spearman's rho correlation coefficient between visits ranged from 0.641-0.952 for all twelve questionnaires indicating strong correlation with p-value< 0.001. 
 Conclusion Nepali version of the GOHAI exhibited acceptable reliability and validity in the people of Kathmandu valley, Nepal. This instrument can be applied to evaluate OHRQoL of different age groups as it was carried out in all the age groups.
Highlights
Dental demands from older pa ents con nue to increase due to the growing number of people in this age group and as a result of various causes of den on loss
Oral problems are more chronic and severe as they have always been neglected in preference to other health problems[1].Oral health-related quality of life (OHQoL) has been defined as a self-report pertaining to oral health – capturing the func onal, social and psychological impacts of oral disease.”[2]. This defini on includes both social and psychological aspects not just the absence of physical diseases
Several studies have shown that the General Oral Health Assessment Index (GOHAI) is more suitable instrument to measure OHQoL of the elder popula on in Western cultures than the most frequently used Oral Health Impact Profile (OHIP).[9,10]
Summary
Dental demands from older pa ents con nue to increase due to the growing number of people in this age group and as a result of various causes of den on loss. The General Oral Health Assessment Instrument (GOHAI), developed by Atchison and Dolan, aims to complement clinical measures by paying special a en on to problems related to physiological, physical and psychological needs of the pa ents.[8] Several studies have shown that the GOHAI is more suitable instrument to measure OHQoL of the elder popula on in Western cultures than the most frequently used Oral Health Impact Profile (OHIP).[9,10] The reliability of GOHAI was found to be sa sfactory, and all hypotheses designed to assess and check its validity were confirmed in Swedish,[11] Dutch,[12] French[13] and Arabic[14] studies To use it in Nepali context first it is essen al to carry out a rigorous transla on and valida on process.[15] Transferring such indicators from one country to another presents problems at two levels. Because of all these reasons it is essen al to develop Nepali version of GOHAI and to verify its reliability and validity
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