. Author manuscript; available in PMC: 2015 Dec 1.

Published in final edited form as: Med Care Res Rev. 2015 Jun 10;72(6):643–664. doi: 10.1177/1077558715589188

Table 3.

Coefficients From the Regression Analyses Preceding the Mediation Analysis.

	Step 1: Association between the main explanatory variables and the two outcomes				Step 2: Association between the main explanatory variables and the hypothesized mediating variables
	Patients recommending the hospital (patient-level outcome)		Patients rating the hospital (patient-level outcome)		Clinical care left undone (hypothesized hospital-level mediator)		Planning/communication left undone (hypothesized hospital-level mediator)
	Est.	95% CI	Est.	95% CI	Est.	95% CI	Est.	95% CI
Organization of nursing care (hospital-level main covariates)
Nursing work environment	0.324^*	[0.081, 0.508]	0.261^*	[0.032, 0.482]	−1.636^*	[−2.044, −1.248]	−0.904^*	[−1.164, −0.636]
Patient-to-nurse ratio	−0.040^*	[−0.062, −0.015]	−0.042^*	[−0.064, −0.020]	0.039^*	[0.002, 0.072]	0.051^*	[0.027, 0.077]
Nonnursing tasks	−0.149	[−0.540, 0.249]	−0.164	[−0.588, 0.239]	0.084	[−0.410, 0.564]	0.647^*	[0.239, 1.024]
Years of experience	−0.004	[−0.021, 0.014]	0.000	[−0.015, 0.015]	−0.030^*	[−0.058, −.003]	−0.011	[−0.031, 0.008]
Type of employment	−0.333	[−0.724, 0.105]	−0.166	[−0.595, 0.231]	0.294	[−0.273, 0.889]	0.263	[−0.160, 0.584]
Overtime	0.005	[−0.378, 0.386]	0.168	[−0.197, 0.527]	1.332^*	[0.578, 1.984]	0.582^*	[0.010, 1.075]

Step 3: Associations between the two hypothesized mediating variables and the two outcomes, from models including the main explanatory variables

	Est.	95% CI	Est.			95% CI

Clinical care left undone	−0.194^*	[−0.309, −.075]	−0.144^*			[−0.255, −0.050]
Planning/communication left undone	−0.013	[−0.148, 0.113]	−0.038			[−0.161, 0.080]

Note. Est. = estimate; CI = credibility interval;

indicates statistical significance.