Exploring the relationship between functional limitations of the older adults and the health-related quality of life of their spouse in Shaanxi Province, China.

The exploratory factor analysis (EFA) was appropriate as indicated by a Kaiser–Meyer–Olkin (KMO) measure of sampling adequacy of 0.846 and a highly significant Bartlett’s Test of Sphericity ( p < 0.001), showing two common factors with a cumulative contribution rate of 59.61% extracted.

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