Patterns of research utilization on patient care units

Table 3 Reliability and validity of data aggregated at the unit level

Variable	ANOVA	Degrees of Freedom	ICC(1)	ICC(2)	η²	ω²	Alpha
Overall RU	5.83**	6,264	0.11	0.83	0.12	0.00	--
Authority	2.85*	6,303	0.04	0.65	0.05	0.00	--
Attitude	1.08	6,303	0.00	0.07	0.02	0.00	--
Intent	2.34*	6,298	0.03	0.57	0.05	0.00	--
Belief	2.43*	6,285	0.03	0.59	0.05	0.00	0.85
People support	4.60**	6,181	0.09	0.78	0.14	0.00	0.89
Organizational support	21.56**	6,204	0.34	0.95	0.40	0.28	0.85
Re-sequencing	12.21**	6,359	0.19	0.92	0.17	0.06	0.81
Students	1.57	6,133	0.02	0.36	0.07	0.00	0.75
Acuity	16.15**	6,364	0.24	0.94	0.21	0.11	0.84
Coworker support	2.36*	6,149	0.06	0.58	0.09	0.03	0.72
Education	1.46	6,144	0.02	0.32	0.06	0.00	0.64
Behavior	1.62	6,152	0.03	0.38	0.06	0.00	--
Creativity	0.86	6,155	0.01	0.11	0.03	0.00	--
Efficiency	0.92	6,154	0.01	0.12	0.04	0.00	--
Total PRN	260.32**	6,1334	0.59	1.00	0.54	0.48	--
Total CT	1.54	6,140	0.03	0.36	0.06	0.00	--

(a) Analysis of variance (ANOVA): Measure used to compare differences in mean scores across seven units;
(b) p value for ANOVA F-statistics:* p < .05; **p < .01. The denominator, degree of freedom, differs for some variables owing to different instruments;
(c) ICC = interclass correlation;
(d) η²: proportion of total information in a given factor at the individual level, which is captured by aggregated data;
(e) ω²: provides a relative measure of the strength of an independent variable, small effect < 0.06; medium effect, 0.06–0.15; large effect > 0.15

ISSN: 1748-5908