Unadjusted and Adjusted Coefficients from Hierarchical Linear Models Estimating the Effects of Nurse Work Environment on Nurse Burnout and Nurse Intentions to Leave

	Regression coefficients (95% CI)		Intraclass Correlation Hospital Unit Level
	Unadjusted	Adjusted
Emotional exhaustion	−1.34*** (−1.80–—0.88)	−2.00*** (—2.71–—1.29)	11.39%
Depersonalization	−0.19 (−0.43–0.05)	−0.71*** (−1.08–—0.34)	4.43%
Personal accomplishment	0.27 (0.00–0.55)	0.55* (0.14–0.97)	3.56%
	Odds Ratios (95% CI)
Intention to leave	0.92* (0.85–0.99)	0.83** (0.72–0.95)	14.0%

Notes: Unadjusted estimates are from bivariate hierarchical linear models (HLM) with random intercepts in which nurses are nested in hospital units. Adjusted estimates are from HLM models that control for nurses' sex, age, race, nursing experience, years on present unit, and hospital and unit characteristics (hospital size and the technology available in the hospital, unit size [average daily census], unit staffing [the ratio of RNs to average daily census], and unit skill mix [the ratio of RNs to total nursing staff]). The intraclass correlation was calculated as the percentage of the variance attributable to the unit level compared with the total variance, from the null model. Single asterisks indicate effects that are significant at the 0.05 level; double asterisks indicate effects that are significant at the 0.01 level; and triple asterisks indicate effects that are significant at the 0.001 level.

CI = confidence interval.