PSYCHOMETRIC ASSESSMENT OF THE QUALITY-OF-LIFE INDEX
PSYCHOMETRIC ASSESSMENT OF THE QUALITY-OF-LIFE INDEX
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DOI：
10.1002/nur.4770150106
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发表时间：
1992-02-01
影响因子：
2
通讯作者：
POWERS, MJ
中科院分区：
文献类型：
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作者：
FERRANS, CE;POWERS, MJ
本研究的目的是检验生活质量指数（QLI）（Ferrans & Powers，1985 a）的心理测量学特性。样本包括从伊利诺伊州的成人、单位内血液透析患者人群中随机选择的349例患者。因子分析被用来检查潜在的因素结构。一个四因素的解决方案最适合的数据，表明有旅游方面的QLI：健康和功能，社会经济，心理/精神和家庭。因子分析的四个主要因素揭示了一个高阶因素，代表生活质量。结构效度也得到了对照组方法的支持。正如预测的那样，研究发现，那些收入较高的人在社会和经济子量表上的生活质量得分明显较高。支持收敛效度提供了一个强相关性（r = 0.77）之间的分数从生活质量指数和生活满意度的评估。研究结果支持整个QLI（α = .93）和四个分量表（α = .87，.82，.90，.77）的内部一致性可靠性。
The purpose of this study was to examine the psychometric properties of the Quality of Life Index (QLI) (Ferrans & Powers, 1985a). The sample consisted of 349 patients selected randomly from the adult, in-unit hemodialysis patient population of Illinois. Factor analysis was used to examine the underlying factor structure. A four-factor solution best fit the data, indicating that there were tour dimensions underlying the QLI: health and functioning, socioeconomic, psychological/spiritual, and family. Factor analysis of the four primary factors revealed one higher order factor, representing quality of life. Construct validity also was supported by the contrasted groups approach. As predicted, it was found that those who had higher incomes had significantly higher quality of life scores on the social and economic subscale. Support for convergent validity was provided by a strong correlation (r = .77) between scores from the QLI and an assessment of life satisfaction. Findings supported the internal consistency reliability of the entire QLI (alpha = .93) and the four subscales (alphas = .87, .82, .90, .77).