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Table 4 Results of multi-level analysis (analysis of explained variance for 10 ACT concepts at unit and nursing home levels, n = 25 nursing homes)

From: The care unit in nursing home research: Evidence in support of a definition

ACT Concept1 % Variance that can be explained by: % of explained variance gained by: H0: Variance = 0 (Ha: Variance > 0) (P value)
  Unit 2 Nursing Home3 Unit + Nursing Home4 Aggregating to nursing home5 Aggregating to unit6 Nursing Home = 0 (3 level model) Unit = 0 (2 level model)
Leadership 7.73%* 6.08%* 8.49%* 0.77% 2.41% 0.0130 0.0002
Culture 11.84%* 10.59%* 11.79%* -0.05% 1.20% 0.1230 <0.0001
Evaluation 8.98%* 6.42%* 8.34%* -0.64% 1.91% 0.0726 0.0001
Social Capital 5.08%* 4.18%* 4.90%* -0.18% 0.72% 0.2399 0.0030
Formal Interactions 3.63%* 2.92%* 3.73%* 0.10% 0.81% 0.2171 0.0140
Informal Interactions 2.15% 1.97%* 2.36%* 0.21% 0.38% 0.3284 0.0557
Resources 9.74%* 10.20%* 11.36%* 1.62% 1.16% 0.1006 <0.0001
OS-staff 32.89%* 28.84%* 30.92%* -1.97% 2.09% 0.0251 <0.0001
OS-space 34.45%* 31.74%* 35.05%* 0.60% 3.30% 0.0037 <0.0001
OS-time 21.91%* 19.76%* 20.48%* -1.42% 0.72% 0.2212 <0.0001
  1. 1 n values. Facility (n = 25), Unit (n = 89), Healthcare Aide responses (n = 1243 to 1250 depending on the ACT concept: leadership n = 1247, culture n = 1251, evaluation n = 1245, social capital n = 1244, formal interactions n = 1250, informal interactions n = 1244, structural and electronic resources n = 1243, OS-staff n = 1257, OS-space n = 1254, OS-time n = 1249)
  2. 2 2 level model (unit, individual). % of total variance that can be explained by the unit level
  3. 3 2 level model (nursing home, individual) % of total variance that can be explained by the nursing home
  4. 4 3 level model (nursing home, unit, individual) % of total variance that can be explained by unit + nursing home
  5. 5 variance gained by adding nursing home (% unit + nursing home explained variance - % unit explained variance)
  6. 6 variance gained by adding unit (% unit + nursing home explained variance - % nursing home explained variance)
  7. * p < 0.05 compared to individual only level (Likelihood Ratio test)