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. Author manuscript; available in PMC: 2012 Jul 9.
Published in final edited form as: J Am Geriatr Soc. 2010 Nov 4;58(12):2401–2406. doi: 10.1111/j.1532-5415.2010.03162.x

Table 1.

Reliability Indices of the Practice Environment Scale (PES) in Study Sample

Characteristic Mean ± Standard Deviation Range ICC(1) ICC(2) η 2 ω 2
Nurse participation 2.53 ± 0.34 1.83–3.19 0.27 0.61 0.13 0.82
Competent nurse manager 2.74 ± 0.36 1.94–3.57 0.26 0.59 0.08 0.51
Registered nurse–physician relationships 3.09 ± 0.34 2.17–4.0 0.23 0.55 0.11 0.67
Foundations for quality 2.93 ± 0.32 2.11–3.6 0.43 0.75 0.14 0.79
Resources and staffing 2.63 ± 0.43 1.81–3.61 0.24 0.55 0.084 0.88
PES total composite score 2.79 ± 0.60 1.19–4.00 0.35 0.68 0.14 0.83

Note: Scores indicate extent to which respondents agree that supportive traits are present (range 1 (strongly disagree) to 4 (strongly agree), with higher scores indicating more-supportive environments).

ICC = intraclass correlation coefficient.