Background Subjective wellbeing in terms of objective outcome can be useful to determine the level of progress in clinical practice as well as research studies in Bangladesh. Besides, cultural understanding of well-being for Bangladeshi population is also equally important to report. A valid Bangla version of the five-item WHO Well-being Index can be a suitable measure to achieve the purposes. Therefore, the present study aimed at validating the WHO-5 Well-being Index for general population in Bangladesh. Methods After following the standard procedures for translation, back-translation, and committee translation, the initial Bangla version of the scale was developed and pretested. Based on the feedback during pretesting, a slight modification was made and the final version was developed. This final version was administered to 269 participants of different socioeconomic backgrounds to find out the reliability and validity of the scale from March 2019 to May 2019. The data analysis was conducted using SPSS 24. Results The scale demonstrated acceptable internal consistency (α = 0.754) and test-retest reliability (r = 0.713), divergent validity (r = −0.443, p < 0.01 with the Bangla version of Perceived Stress Scale-10) and convergent validity (r = 0.542, p < 0.01 with the Bangla version of Warwick-Edinburgh Mental Well-Being Scale). The data also yielded one-factor structure for the scale in exploratory factor analysis explaining 38.68% of total variance. The factor-structure was further supported in the confirmatory factor analysis (χ2 = 295.852, χ2/df = 2.017, RMSEA = 0.062, CFI = 0.986, TLI = 0.964, and SRMR = 0.0255). Conclusion The findings suggested the Bangla version of the WHO-5 Well-being Index is a psychometrically valid and reliable tool for general adult population in Bangladeshi when it comes to measuring subjective well-being both in clinical practice and research studies.

中文翻译：

---

孟加拉 WHO-5 幸福指数的验证

背景 客观结果方面的主观幸福感可用于确定孟加拉国临床实践和研究的进展水平。此外，对孟加拉国人口福祉的文化理解也同样重要。有效的孟加拉文版本的五项世卫组织福祉指数可能是实现目标的合适措施。因此，本研究旨在验证孟加拉国普通人群的 WHO-5 幸福指数。方法 在遵循翻译、回译和委员会翻译的标准程序后，开发并预测试了量表的初始孟加拉语版本。根据预测试期间的反馈，稍作修改并开发了最终版本。α=0.754）和重测信度（r= 0.713），发散效度（r= -0.443,p< 0.01，孟加拉语版本的感知压力量表 10）和收敛效度（r= 0.542,p< 0.01 孟加拉语版本的 Warwick-Edinburgh 心理健康量表）。该数据还为探索性因素分析中的量表产生了单因素结构，解释了总方差的 38.68%。因子结构在验证性因子分析中得到进一步支持（χ2= 295.852, χ2/df = 2.017，RMSEA = 0.062，CFI = 0.986，TLI = 0.964，SRMR = 0.0255）。结论 研究结果表明，在衡量临床实践和研究中的主观幸福感时，孟加拉语版本的 WHO-5 幸福指数对于孟加拉国的普通成年人来说是一种心理测量学上有效且可靠的工具。