| R2 | Adjusted R2 | F change | Significance |
---|---|---|---|---|
Initial model summary (covariates only) | 0.08 | 0.07 | 7.36 | p < 0.001** |
Final model summary (covariates and predictor) | 0.10 | 0.09 | 24.24 | p < 0.001** |
Final model | Â | Â | Â | Â |
ANOVA | Sum of squares (df) | Mean square | F value | Significance |
Regression | 975.75 (13) | 75.06 | 8.81 | p < 0.001** |
Residual | 8939.23 (1049) | 8.52 | Â | Â |
Total | 9914.98 (1062) | Â | Â | Â |
Covariates and predictor | Standardized coefficient (β) | t | Significance |  |
(Constant) | -- | 8.06 | p < 0.001** | Â |
Hospital 1 (the reference group) | -- | -- | -- | Â |
Hospital 2 (1 = Yes, 0 = No) | -0.11 | -2.06 | 0.04* | Â |
Hospital 3 (1 = Yes, 0 = No) | -0.22 | -5.60 | p < 0.001** | Â |
Hospital 4 (1 = Yes, 0 = No) | -0.05 | -1.30 | 0.19 | Â |
Medical unit (the reference group) | -- | -- | -- | Â |
Surgical unit (1 = Yes, 0 = No) | -0.12 | -3.16 | 0.002** | Â |
Medical-surgical combined unit (1 = Yes, 0 = No) | -0.09 | -2.60 | 0.010* | Â |
Total productive nursing hours/patient-day | 0.13 | 3.05 | 0.002** | Â |
Percentage of productive nursing hours provided by RNs | -0.30 | -6.21 | p < 0.001** | Â |
Percentage of patients aged ≥ 65 years | -0.07 | -1.64 | 0.10 |  |
Average CMI value | 0.06 | 1.75 | 0.08 | Â |
Percentage of patients with altered mental status at admission | 0.10 | 2.77 | 0.006** | Â |
Percentage of patients with hearing difficulties at admission | 0.01 | 0.26 | 0.80 | Â |
Call light use rate/patient-day (in 10 equal groups; 10 = least frequent, 100 = most frequent) | -0.07 | -2.12 | 0.03* | Â |
Call light response time (in 10 equal groups; 10 = fastest, 100 = slowest) | 0.15 | 4.92 | p < 0.001** | Â |