Table 2. Mean levels of PES-NWI: perioperative unit. Barcelona, Spain, 2014-15; Hospitals study. Spain, 2012; Magnetic hospitals, USA, 2014.

PES-NWI* Dimensions		Mid-level
		Perioperative unit Spanish 2014-2015	RN4Cast† Hospitals Spain 2012	Magnetic hospitals USA‡ 2014
1	Allocation of adequate personnel and resources	2.01 - 2.23	2.44 - 2.56	2.65 - 2.88
2	Collegiate relationships between nurse and physician	2.35 - 2,59	1.99 - 2.08	2.99 - 3.07
3	Skill, Leadership and Support of those responsible	2.15 - 2.39	2.42 - 2.61	2.72 - 3.07
4	Nurse fundamentals for the quality of care	2.56 - 2.74	2.37 - 2.45	3.09 - 3.20
5	Nurse participation in hospital affairs	1.88 - 2.03	2.14 - 2.41	2.76 - 3.01
Global		2.20 - 2.40	2.27 - 2.42	2.92 - 3.00

^*PES-NWI = Practice Scale-Nursing Work Index;

^†RN4Cast Spain (Forecasting Register Nurse in Spain);

^‡USA = United States