Cross-cultural adaptation and measurement properties of Youth Quality of Life Instrument-Short Form (YQOL-SF) in a developing South-East Asian country.

Men Thi Hoang,Giang Thu Vu,Toan Van Ngo,Long Hoang Nguyen,Carl A Latkin,Hoa Thi Do,Cuong Tat Nguyen,Cyrus S H Ho,Trang Quynh Dang,Linh Phuong Doan,Roger C M Ho,Tham Thi Nguyen,Ha Ngoc Do,Chung-Ying Lin

doi:10.1371/journal.pone.0253075

Abstract

This study was performed to evaluate the measurement properties of Youth Quality of Life–Short Form (YQOL-SF) in assessing the quality of life (QOL) among general youths in Vietnam. An online cross-sectional study was conducted to validate the YQOL-SF. Factor analysis (including exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) was utilized to determine the factorial structure of this tool. The psychometric properties (reliability and validity) of the new factorial model were assessed. The factor analysis revealed the two-factor model of YQOL-SF including factor 1 “Belief in self and family”, and factor 2 “Environment and relationships”. Cronbach’s alpha value showed excellent internal consistency in both factors (0.911 and 0.910, respectively). Results also indicated good convergent, divergent, concurrent, and know-group validity of the two-factor model. Our study provided a promising model with different domains that were proved to be essential for the assessment of quality of life among Vietnamese youth aged 16–24. Our two-factor model affirmed that a balance between detail and length of the assessment is important to consider when selecting YQOL-SF for youths’ QOL assessment. It helped reduce the risk of redundancy and encourages high survey completion rates among participants.

Highlights

Quality of life (QOL) is an important self-reporting indicator in assessing the development of a country, as well as the effectiveness of intervention programs for specific cohorts [1]
This paper aims to inform psychometric properties of Youth Quality of Life Instrument (YQOL)-SF, including reliability, validity, and factor analysis in measuring QOL of Vietnamese youths
Based on the factor analysis, our results showed that the two-factor model, which consisted of factor 1 “Belief in self and family” and factor 2 “Environment and relationships”, with better fit indices compared to the theoretical one-factor model

Summary

Introduction

Quality of life (QOL) is an important self-reporting indicator in assessing the development of a country, as well as the effectiveness of intervention programs for specific cohorts [1]. According to the World Health Organization, the definition of QOL is “perceptions of their position in life in the context of the culture and value systems in which they live, and in relation to their goals, expectations, standards, and concerns” [2]. Considering QOL as an indicator of the effectiveness of intervention programs or treatment progress helps to assess the impact of these interventions on each individual’s life; thereby, enabling clinicians or policymakers to design interventions with optimal effectiveness and efficacy [6]

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Conclusion