Development of the practice environment scale of the nursing work index†‡

TLDR

The Nursing Work Index (NWI) captures organizational characteristics of magnet hospitals. The study aims to develop subscales that can be used to examine how the nursing practice environment affects nurse and patient outcomes. Five subscales were derived from the NWI using data from 1985–1986 nurses in 16 magnet hospitals. The subscales and composite measure demonstrated high reliability at both nurse and hospital levels, supported construct validity by distinguishing magnet from nonmagnet nurses, and were confirmed in a contemporary sample of 11,636 Pennsylvania nurses, indicating strong psychometric properties and generalizability. © 2002 Wiley Periodicals, Inc., Res Nurs Health 25:176–188.

Abstract

Abstract Five subscales were derived from the Nursing Work Index (NWI) to measure the hospital nursing practice environment, using 1985–1986 nurse data from 16 magnet hospitals. The NWI comprises organizational characteristics of the original magnet hospitals. The psychometric properties of the subscales and a composite measure were established. All measures were highly reliable at the nurse and hospital levels. Construct validity was supported by higher scores of nurses in magnet versus nonmagnet hospitals. Confirmatory analyses of contemporary data from 11,636 Pennsylvania nurses supported the subscales. The soundness of the new measures is supported by their theoretical and empirical foundations, conceptual integrity, psychometric strength, and generalizability. The measures could be used to study how the practice environment influences nurse and patient outcomes. © 2002 Wiley Periodicals, Inc. Res Nurs Health 25:176–188, 2002