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. Author manuscript; available in PMC: 2014 Nov 1.
Published in final edited form as: Am J Crit Care. 2013 Nov;22(6):482–488. doi: 10.4037/ajcc2013298

Table 2.

Subscale scores for critical care nurses on the Practice Environment Scale of the Nursing Work Indexa

Subscale No. of items Cronbach α Mean (SD) Range
Nurse Foundations for Quality of Care 9 0.89 2.93 (0.29) 2.09-3.68
Nurse Participation in Hospital Affairs 9 0.91 2.52 (0.38) 1.50-3.56
Nurse Manager Ability, Leadership, and Support 4 0.92 2.56 (0.43) 1.20-3.57
Collegial Nurse-Physician Relations 3 0.94 2.89 (0.32) 1.83-3.69
Staffing Resource and Adequacy 4 0.91 2.54 (0.40) 1.45-3.69
Composite score,
 without Staffing and Resource Adequacy subscale		 4 0.92 2.73 (0.30) 1.98-3.58
Composite score,
 with Staffing and Resource Adequacy subscale		 5 0.92 2.68 (0.31) 1.92-3.60
a

A higher score represents a more positive work environment.