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Table 3 Summary of hierarchical multiple regression analysis for variables predicting agitation, non aggressive physical behavior, and verbally agitated behavior

From: Discomfort and agitation in older adults with dementia

Variable B SE B β
Overall agitation    
   Sex -4.17 6.01 -0.09
   Severity of dementia .94 3.09 0.06
   Disability (ADL) .40 0.50 0.17
   Level of discomfort 2.20 0.52 0.55***
R 2 for Step 1 = 0.06, F(3,45) = 0.98 (p = 0.648) ΔR 2 for Step 2 = 0.28, F(1,44) = 18.21*** R 2 Total = 0.34, F(4,44) = 5.57***    
Non aggressive physical behavior    
   Sex -3.00 2.46 -0.17
   Severity of dementia -1.14 1.27 -0.19
   Disability (ADL) -0.04 0.21 -0.05
   Level of discomfort 0.70 0.21 0.45**
R 2 for Step 1 = 0.09, F(3,45) = 1.55 (p = 0.214) ΔR 2 for Step 2 = 0.18, F(1,44) = 10.89** R 2 Total = 0.28, F(4,44) = 4.14**    
Verbally agitated behavior    
   Sex -0.98 2.51 -0.05
   Severity of dementia 0.57 1.29 0.09
   Disability (ADL) 0.38 0.21 0.36
   Level of discomfort 0.99 0.22 0.57**
R 2 for Step 1 = 0.09, F(3,45) = 1.45 (p = 0.241) ΔR 2 for Step 2 = 0.30, F(1,44) = 21.04*** R 2 Total = 0.38, F(4,44) = 6.83***    
  1. Note. Sex, severity of dementia and disability were introduced in a first block of the regression (Step 1), followed by the level of discomfort at the next step (Step 2). Statistics shown for each variable are those at Step 2.
  2. **p < 0.01
  3. ***p < 0.001