Table 1.
Cronbach’s Alphas and Corrected Item-Total Correlations of Data Assigned to Factor Solutions Determined Previouslya,b
| No. of Items | Cronbach’s Alphas | Item-Total Correlation | |
|---|---|---|---|
| Aiken & Patrician’s NWI-R (2000) | 15 | 0.72 | 0.12–0.44 |
| Nurse-physician relationship | 3 | 0.84 | 0.68–0.75 |
| Control over practice settings | 7 | 0.70 | 0.05–0.66 |
| Autonomy | 5 | 0.41 | 0.03–0.41 |
| Lake’s PES-NWI (2002) | 29 | 0.83 | 0.05–0.56 |
| Staffing and resource adequacy | 4 | 0.77 | 0.42–0.71 |
| Collegial nurse-physician relations | 3 | 0.84 | 0.68–0.75 |
| Nurse manager ability, leadership, and support of nurses | 4 | 0.63 | 0.27–0.55 |
| Nursing foundations for quality of care | 9 | 0.56 | 0.08–0.44 |
| Nurse participation in hospital affairs | 9 | 0.72 | 0.20–0.55 |
| Estabrooks et al.’s PEI (2002) | 26 | 0.83 | 0.21–0.55 |
Note. The factor “nurse manager ability, leadership, and support of nurses” originally contained five items. The item “supervisors use mistakes as learning opportunities not criticism” was not included in Aiken & Patrician’s original NWI-R, nor was it included in the corresponding Dutch translation. Table 1. is based on the example of Li et al. (2007).
a
Factor solutions determined by Aiken & Patrician (2000), Lake (2002), and Estabrooks et al. (2002).
b
Missing data imputed with the expectation maximization algorithm.