Table 3.
Intensive care unit independent variable correlation matrix | |||||||
---|---|---|---|---|---|---|---|
CMI (risk adj) |
Magnet hosp |
RN yrs work |
RN BSN edu |
RN cert |
THPPD | RN skill mix |
|
CMI (risk adj) | 1 | ||||||
Magnet hosp | 0.51b | 1 | |||||
RN yrs work | −0.54b | −0.09 | 1 | ||||
RN BSN edu | 0.34c | 0.33c | −0.01 | 1 | |||
RN cert | −0.08 | −0.05 | 0.13 | −0.001 | 1 | ||
THPPD | 0.01 | 0.06 | −0.10 | 0.22 | 0.21 | 1 | |
RN skill mix | −0.07 | 0.03 | 0.20 | 0.31c | −0.31c | −0.41b | 1 |
Independent-dependent variable correlations | |||||||
MAE | Fall | Skin brk | CCI | BSI | UTI | ||
CMI (risk adj) | −0.18 | −0.16 | −0.18 | 0.29 | 0.34 | 0.26 | |
Magnet hosp | −0.17 | 0.03 | −0.28 | 0.28 | −0.07 | 0.28 | |
RN yrs work | 0.31c | −0.07 | −0.16 | 0.32 | −0.08 | −0.28 | |
RN BSN edu | 0.04 | −0.01 | −0.44c | 0.27 | 0.34 | 0.03 | |
RN cert | −0.20 | −0.06 | −0.02 | 0.13 | 0.25 | 0.13 | |
THPPD | 0.07 | 0.07 | −0.12 | 0.62b | 0.63b | 0.49 | |
RN skill mix | 0.31c | −0.09 | 0.14 | −0.28 | −0.07 | −0.64c |
Variables: BSI, bloodstream infection rate in unit; CCI, central catheter infection rate in unit; CMI (risk adj). Medicare case mix index, risk adjuster; MAE, medication administration error rate in unit; Magnet hosp, magnet hospital; RN BSN edu, percentage of registered nurses in the unit with a bachelor of science in nursing or a higher degree; RN cert, percentage of staff registered nurses in unit who are certified; RN skill mix, percentage of nursing staff who are registered nurses; RN yrs work, mean years worked by staff registered nurses; Skin brk, skin breakdown rate in unit; THPPD, total hours of nursing care per patient day; UTI, urinary tract infection rate in unit.
Correlation is significant at the .01 level (2-tailed).
Correlation is significant at the .05 level (2-tailed).