Table 4.

Illustration of the Effect of a One-Unit Increase in RN FTEs per 1,000 Inpatient Days across Measures of Quality of Care^a,b

		Percentile Value for RN Staffing per 1,000 Inpatient Days
		25th	50th	75th
Measure of Quality	Estimation Method	2.66	3.34	4.02
Mortality Ratio
	OLS	−0.022***	−0.030***	−0.038***
		(0.006)	(0.005)	(0.007)
	Within-group	−0.016**	−0.014**	−0.011
		(0.006)	(0.005)	(0.006)
	Dynamic panel model	−0.027***	−0.015*	−0.002
		(0.008)	(0.007)	(0.008)
Pneumonia Complication Ratio
	OLS	−0.064***	−0.041***	−0.018
		(0.014)	(0.011)	(0.015)
	Within-group	−0.012	−0.019	−0.025
		(0.013)	(0.011)	(0.013)
	Dynamic panel model	1.6E-4	−0.012	−0.023
		(0.017)	(0.013)	(0.015)
Urinary Tract Infection Complication Ratio
	OLS	−0.056***	−0.066***	−0.076***
		(0.015)	(0.012)	(0.015)
	Within-group	2.1E-4	0.005	0.010
		(0.015)	(0.012)	(0.014)
	Dynamic panel model	0.024	0.013	0.002
		(0.021)	(0.016)	(0.017)
Decubitis Ulcer Complication Ratio
	OLS	−0.050***	−0.045***	−0.040**
		(0.012)	(0.010)	(0.015)
	Within-group	0.018	0.014	0.011
		(0.011)	(0.010)	(0.012)
	Dynamic panel model	0.023	6.8E-4	−0.024
		(0.016)	(0.013)	(0.015)

^aStandard errors (in parentheses) beneath the estimates of the marginal effects.

^bMarginal effects are calculating assuming 0.55 LPN FTEs per 1,000 inpatient days and 9.28 nonnurse FTEs per 1,000 inpatient days (the median values in our sample).

^*Significant at the .05 level;

^**significant at the .01 level;

^***significant at the .001 level.