Table 3.

Trends of New Jersey RN Staffing (Patient to RN ratio) by Specialty (2008–2015).

Hospital specialties	na	IQR	2008		2009		2010		2011
			M	SD	M	SD	M	SD	M	SD
Adult closed psychiatric	859	1.80	6.4	1.4	6.5	1.6	6.3	1.5	6.4	1.4
Adult open psychiatric	445	2.40	5.8	1.5	6.0	1.6	5.9	1.6	6.1	1.6
Closed child psychiatric	180	2.30	5.9	1.9	6.0	2.1	6.7	2.2	6.2	2.2
Emergency department	1951	5.40	9.9	4.7	9.6	4.5	9.5	4.1	9.5	3.9
Intensive care	2023	0.30	1.9	0.2	1.9	0.2	1.9	0.2	2.0	0.2
Medical surgical	2062	0.90	5.5	0.6	5.4	0.6	5.3	0.6	5.2	0.7
Neonatal intensive care	565	0.50	2.1	0.4	2.0	0.4	1.9	0.4	1.9	0.4
Neonatal step-down	872	1.10	2.3	0.8	2.3	0.8	2.2	0.8	2.2	0.8
Newborn nursery	569	2.50	3.6	1.6	3.6	1.7	3.6	1.8	3.5	1.7
Obstetrics	1539	2.50	4.3	1.7	4.3	1.8	4.2	1.7	4.2	1.7
Pediatric intensive care	349	0.40	1.6	0.3	1.6	0.3	1.5	0.4	1.6	0.3
Pediatrics	1249	1.60	2.7	1.1	2.7	1.0	2.7	1.1	2.8	1.0
Step-down	1495	1.20	4.3	0.8	4.3	0.9	4.3	0.9	4.3	0.9
AHA RN staffing			3.7	1.0	3.7	1.0	3.7	1.0	3.5	0.8

	2012		2013		2014		2015		% Change
	M	SD	M	SD	M	SD	M	SD
Adult closed psychiatric	6.2	1.4	6.1	1.4	6.2	1.2	6.1	1.2	−3.9
Adult open psychiatric	5.8	1.6	5.8	1.7	6.2	1.5	6.1	1.4	3.8
Closed child psychiatric	6.6	1.6	6.4	1.7	6.5	1.6	5.9	1.6	0.0
Emergency department	9.5	3.9	9.5	4.0	9.3	4.0	9.4	4.0	−4.3
Intensive care	1.9	0.2	2.0	0.3	1.9	0.3	1.9	0.3	1.6
Medical surgical	5.2	0.6	5.2	0.6	5.2	0.6	5.1	0.6	−6.6
Neonatal intensive care	2.0	0.3	1.9	0.3	1.9	0.3	1.9	0.3	−9.2
Neonatal step-down	2.1	0.8	2.1	0.8	2.0	0.9	2.0	0.9	−11.1
Newborn nursery	3.5	1.6	3.5	1.6	3.4	1.7	3.5	1.8	−1.4
Obstetrics	4.1	1.7	3.9	1.7	3.9	1.7	3.9	1.6	−8.6
Pediatric intensive care	1.6	0.3	1.6	0.2	1.7	0.3	1.5	0.3	−3.8
Pediatrics	2.7	1.1	2.5	1.1	2.5	1.1	2.4	1.2	−12.0
Step-down	4.3	0.9	4.3	0.9	4.2	0.9	4.3	0.9	−0.9
AHA RN staffing	3.6	1.1	3.4	0.8	3.5	0.9	3.4	0.9	−7.8

Note. AHA = American Hospital Association; IQR = Interquartile range; RN = registered nurse.

^aAdjusted number of observations after applying the IRQ to address outliers.