Abstract
A healthy work environment is a critical factor in nurse satisfaction, retention, and patient outcomes. The Practice Environment Scale of the Nursing Work Index (PES-NWI) is the most commonly used instrument to measure the nursing practice environment. This study uses meta-analysis to examine the reliability generalization of the PES-NWI. A meta-analysis of 51 studies representing a total of 80,563 subjects was conducted. The mean score reliability for the PES-NWI based on 38 studies (n = 68,278) was .922 (p < .05). The Mean Weighted Effect Size was stronger for studies conducted in the United States versus non-U.S. (.946 vs. .907). For studies rated high and moderate quality, the mean score reliability was .911 and .946, respectively. Scores on the PES-NWI are reliable for measuring the nursing practice environment across samples in the United States and non-U.S. countries.
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