Abbasi-Ghahramanloo Abbas, Soltani-Kermanshahi Mojtaba, Mansori Kamyar, Khazaei-Pool Maryam, Sohrabi Masoudreza, Baradaran Hamid Reza, Talebloo Zahra, Gholami Ali
Department of Public Health, School of Health, Ardabil University of Medical Sciences, Ardabil, Iran.
Social Determinants of Health Research Center, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran.
Int J Gen Med. 2020 Aug 11;13:497-506. doi: 10.2147/IJGM.S258953. eCollection 2020.
This study aimed to compare the quality of life (QoL) in patients with type 2 diabetes using two WHOQoL -BREF and SF-36 questionnaires in Iran.
In this cross-sectional study, 1847 patients with type 2 diabetes were recruited from rural health-care centers affiliated to Neyshabur County (Iran) in 2012. In addition to demographic information, two questionnaires WHOQoL-BREF and SF-36 questionnaires were used for data collection. Cronbach's alpha coefficient was used for scale reliability. We conducted an exploratory factor analysis for the investigation of construct validity. Convergent and discriminant validity were analyzed using Spearman correlation coefficient. To determine the relationships between the eight domains of SF-36 and four domains of the WHOQoL-BREF, structural equation modelling was performed.
Cronbach's alpha coefficients were acceptable for all domains of both WHOQoL-BREF (0.69-0.86) and SF-36 (0.63 -0.92) questionnaires. The principal component analysis showed two separate factors: one for all domains of SF-36 and another for all domains of WHOQoL-BREF. Spearman correlation coefficients of both instruments were partly to strongly correlated with most domains (r ≥0.40). Correlations for domains with similar constructs were stronger than those measuring varied constructs. Structural equation modelling recommended approximately moderate relationships among the SF-36 and WHOQoL-BREF domains.
Our study suggests that SF-36 and WHOQoL-BREF are reliable instruments for clinical and research uses, respectably. However, results of the goodness of fit showed that the WHOQoL-BREF was fitted well. Also, the WHOQoL-BREF can be considered more suitable for the study population.
本研究旨在使用世界卫生组织生活质量简表（WHOQoL -BREF）和36项简明健康状况调查量表（SF-36），比较伊朗2型糖尿病患者的生活质量（QoL）。
在这项横断面研究中，2012年从伊朗内沙布尔县下属的农村医疗保健中心招募了1847例2型糖尿病患者。除人口统计学信息外，还使用世界卫生组织生活质量简表（WHOQoL -BREF）和36项简明健康状况调查量表（SF-36）收集数据。采用克朗巴哈系数来评估量表的信度。我们进行探索性因子分析以研究结构效度。使用斯皮尔曼相关系数分析聚合效度和区分效度。为了确定SF-36的八个领域与WHOQoL -BREF的四个领域之间的关系，进行了结构方程建模。
WHOQoL -BREF（0.69 - 0.86）和SF-36（0.63 - 0.92）问卷所有领域的克朗巴哈系数均可接受。主成分分析显示两个独立的因子：一个是SF-36所有领域的因子，另一个是WHOQoL -BREF所有领域的因子。两种量表的斯皮尔曼相关系数在大多数领域部分到高度相关（r≥0.40）。具有相似结构的领域之间的相关性强于测量不同结构的领域。结构方程建模表明SF-36和WHOQoL -BREF领域之间的关系大致为中等。
我们的研究表明，SF-36和WHOQoL -BREF分别是临床和研究中可靠的工具。然而，拟合优度结果表明WHOQoL -BREF拟合良好。此外，WHOQoL -BREF可被认为更适合该研究人群。
