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Table 5 Examination of Unit-Level Variation for the ACT Variables

From: Assessment of variation in the alberta context tool: the contribution of unit level contextual factors and specialty in Canadian pediatric acute care settings

Dependent Variable Variance Null Model11 Model22 Model33
Leadership Variance component 0.1298**4 0.1205** 0.1036** 0.0797**
  ICC 0.2032 0.2073 0.1835 0.1473
  Explained variance (R 2) N/A 0.0716 0.2018 0.3863
Culture Variance component 0.0257** 0.0165** 0.0154** 0.0003
  ICC 0.0928 0.0745 0.0697 0.0016
  Explained variance (R 2) N/A 0.3581 0.4021 0.9875
Evaluation Variance component 0.1169** 0.1156** 0.0964** 0.0258*
  ICC 0.1770 0.1774 0.1524 0.0459
  Explained variance (R 2) N/A 0.0111 0.1754 0.7795
Social Capital Variance component 0.0171** 0.0147** 0.0158** 0.0018
  ICC 0.0777 0.0716 0.0766 0.0095
  Explained variance (R 2) N/A 0.1437 0.0789 0.8940
OS-Staffing Variance component 0.2555** 0.2042** 0.2004** 0.1698**
  ICC 0.2395 0.2199 0.2168 0.1900
  Explained variance (R 2) N/A 0.2008 0.2157 0.3354
OS-Space Variance component 0.2136** 0.2078** 0.2105** 0.1104**
  ICC 0.2634 0.2709 0.2734 0.1648
  Explained variance (R 2) N/A 0.0272 0.0145 0.4831
OS-Time Variance component 0.0371** 0.0304** 0.0300** 0.0169*
  ICC 0.1168 0.1050 0.1039 0.0615
  Explained variance (R 2) N/A 0.1807 0.1905 0.5430
Formal
Interactions
Variance component 0.1730** 0.1375** 0.1145** 0.0963**
  ICC 0.161 0.1386 0.1181 0.1012
  Explained variance (R 2) N/A 0.2052 0.3382 0.4435
Informal
Interactions
Variance component 0.2886** 0.2180** 0.2287** 0.0710
  ICC 0.1155 0.0938 0.0979 0.0326
  Explained variance (R 2) N/A 0.2446 0.2076 0.7541
Structural and electronic
resources
Variance component 0.3490** 0.2840** 0.3059** 0.1655*
  ICC 0.0979 0.0831 0.0890 0.0502
  Explained variance (R 2) N/A 0.9169 0.9110 0.9498
  1. 1 Model 1: HLM with individual level covariates only
  2. 2 Model 2: HLM with individual level covariates + specialty
  3. 3 Model 3: HLM with both individual + specialty + unit level covariates
  4. 4 Test whether unit error variance is greater than 0 (*: significant at 0.05 level, **: significant at 0.01 level)