Table 3.
Hierarchical regression analyses for people with moderate dementia, with age, education, gender (step 1), depression (Cornell score, step 2) and total Loneliness score (step 3) as predictors for the outcomes of interest. R2, ΔR2, and standardized β concern each step, F concerns the final model
| NLT | NPI-total score | NPI-dysphoria | QoL-AD | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Model 1 | Model 2 | Model 3 | Model 1 | Model 2 | Model 3 | Model 1 | Model 2 | Model 3 | Model 1 | Model 2 | Model 3 | ||
| β | β | β | β | β | β | β | β | β | β | β | β | ||
| Age | -0.05 | 0.01 | -0.002 | -0.31* | -0.19 | -0.19 | -0.12 | -0.004 | 0.003 | -0.42** | -0.42** | -0.44** | |
| Education | 0.08 | 0.05 | -0.002 | 0.16 | 0.10 | 0.11 | -0.09 | -0.15 | -0.11 | -0.13 | -0.13 | -0.22 | |
| Gender^ | 0.19 | 0.14 | 0.11 | 0.05 | -0.02 | -0.01 | -0.00 | -0.08 | -0.06 | 0.16 | 0.16 | 0.10 | |
| Cornell | 0.31* | 0.35* | 0.61*** | 0.60*** | 0.63*** | 0.60*** | -0.01 | 0.05 | |||||
| Loneliness | -0.28* | 0.05 | 0.23* | -0.46*** | |||||||||
| R2 | 0.05 | 0.14 | 0.22* | 0.16* | 0.51*** | 0.51*** | 0.02 | 0.39*** | 0.44*** | 0.16* | 0.16 | 0.37*** | |
| ΔR2 | 0.05 | 0.09* | 0.08* | 0.16* | 0.35*** | 0.003 | 0.02 | 0.38*** | 0.05* | 0.16* | 0.00 | 0.20*** | |
| F(5,49) = 2.76, p = .03 | F(5,49) = 10.31, p < .001 | F(5,49) = 7.80, p < .001 | F(5,49) = 5.68, p < .001 | ||||||||||
*p < .05; **p < .01; ***p < .001; ^Gender was a dichotomous variable (0 = male; 1 = female). NLT: Narrative Language Test; NPI: NeuroPsychiatric Inventory; QoL-AD: Quality of Life - Alzheimer’s Disease scale