Introduction
Methods
Sample
Measures
Analysis
Exploratory factor analysis
Confirmatory factor analysis
Reliability of model-based constructs
Clinical associations with HRQL individual differences
Modelling
Results
Subjects
DEMQOL | DEMQOL-Proxy | |||
---|---|---|---|---|
Complete | Partial | Complete | Partial | |
Participants | 756 | 112 | 679 | 230 |
Agea
| 78.7 (8.5)
n = 753 | 77.9 (8.2)
n = 112 | 78.8 (8.1)
n = 675 | 79.3 (9.0)
n = 230 |
Gender
| ||||
Male | 269 | 44 | 253 | 87 |
Female | 487 | 68 | 426 | 143 |
Ethnicity
| ||||
White | 657 | 86 | 580 | 191 |
Black | 43 | 13 | 38 | 21 |
Asian | 41 | 11 | 48 | 12 |
Unknown | 15 | 2 | 13 | 6 |
ICD-10
b
| ||||
AD | 425 | 54 | 369 | 119 |
AD mixed | 192 | 33 | 175 | 67 |
Vascular | 84 | 15 | 84 | 30 |
Others | 15 | 5 | 22 | 5 |
Unknown | 40 | 5 | 29 | 9 |
MMSEa
(scores: 0–30) | 21.1 (5.1)
n = 756 | 20.4 (5.3)
n = 112 | 20.8 (5.3)
n = 679 | 19.5 (5.6)
n = 230 |
GDSa
(scores: 0–15) | 3.0 (2.6)
n = 692 | 3.1 (2.6)
n = 105 | 2.9 (2.7)
n = 619 | 3.2 (2.6)
n = 198 |
NPIa
(scores: 0–144) | 12.7 (13.0)
n = 684 | 12.3 (14.1)
n = 102 | 12.1 (12.1)
n = 668 | 15.2 (16.9)
n = 221 |
BADLa
(scores: 0–60) | 9.5 (9.2)
n = 691 | 10.3 (9.4)
n = 105 | 9.5 (9.2)
n = 671 | 11.6 (9.9)
n = 225 |
EFA
CFA
Reliability
External validity
Model 1d | HRQL | POS | NEG | COG | SOC | LON |
---|---|---|---|---|---|---|
DEMQOL (n = 724) | ||||||
Gender | .04 | .03 | −.03 | −.28
| −.41
|
.51
|
Ax | −.11 | −.02 | −.01 | −.02 | −.41 | −.26 |
MMSE | .00 |
.09
| −.08 | .05 | −.02 | .10 |
NPI | −.12
| .00 | .01 |
.19
| .01 | −.07 |
GDS | −.55
| −.49
| −.32
| −.01 |
.28
| −.09 |
BADL |
.12
| −.08 | −.07 |
.18
| −.08 | .07 |
Model 2d | HRQL | POS | NEG | COG | SOC | APP | FIN |
---|---|---|---|---|---|---|---|
DEMQOL-Proxy (n = 797) | |||||||
Gender | .39
| −.16
| .05 | −.09 | −.02 |
.32
| −.14 |
Ax | −.02 | .32
| .23 | .00 | .01 | −.01 | .00 |
MMSE | −.07 | .01 | −.03 | −.08 | −.08 | −.13 | .00 |
NPI | −.22
| −.16
| −.48
| −.05 | .07 |
.13
| −.01 |
GDS | −.22
| −.14
| −.11
| .07 | .08 | .13 | .13 |
BADL | −.01 | −.36
| .05 |
.13
| −.13
| −.42
| −.11 |