Table 4 Multiple regression model with follow-up DEMQOL, DEMQOL proxy values as dependent variables
DEMQOL (n = 195) Model 1 | DEMQOL (n = 195) Model 2 | DEMQOL proxy (n = 269) Model 1 | DEMQOL proxy (n = 269) Model 2 | |
|---|---|---|---|---|
DEMQOL/DEMQOL proxy at baseline | 0.65 ** | 0.65 ** | 0.63 ** | 0.63 ** |
Age | 0.030 | 0.016 | 0.065 | 0.044 |
Gender | ||||
Female | – | – | – | – |
Male | 0.35 | 0.30 | −1.12 | −1.17 |
Education level | ||||
Below A-level or equivalent | – | – | – | – |
AS/A-level | −0.61 | −0.49 | −2.29 | −2.42 |
Degree or higher | 1.52 | 1.45 | −2.08 | − 1.85 |
Co-resident | ||||
No | – | – | – | – |
Yes | 1.17 | 1.21 | −1.50 | −0.95 |
Setting | ||||
Rural | – | – | – | – |
Urban | 0.56 | 0.68 | −0.48 | − 0.32 |
Relationship of carer | ||||
Spouse | – | – | – | – |
Son/daughter (include in-law) | 2.65 | 2.64 | −3.64 | −3.16 |
Other | 3.90 | 4.11 | −1.42 | −1.00 |
Carer burden (Zarit Burden score) | −0.031 | −0.025 | ||
Carer GHQ score | ||||
Carer SF-12 Mental health score | − 0.031 | − 0.038 | ||
Alzheimer’s disease | ||||
No | – | – | – | – |
Yes | 0.13 | 0.29 | 3.44 * | 3.38 * |
Severity of cognitive impairment | ||||
Mild | – | – | – | – |
Moderate | 1.70 | 1.58 | 1.55 | 1.80 |
Severe | 3.87 | 4.11 | ||
Level of disability | ||||
No ADL or IADL limitations | – | – | – | – |
Needs help with 1+ IADL | −2.08 | −1.90 | −1.55 | −1.42 |
Difficulty with 1 ADL | −1.83 | − 1.59 | 1.71 | 1.39 |
Difficulty with 2+ ADLs | −1.83 | − 0.66 | 0.56 | 0.94 |
Level of behavioural disturbance (NPI score) | −0.065 | − 0.060 | − 0.053 | − 0.12 |
Increase in severity of cognitive impairment | −1.49 | 0.68 | ||
Increase in level of disability | 1.33 | 0.71 | ||
Increase in level of behavioural disturbance | 0.24 | −4.32 ** | ||
Constant | 30.72 | 31.91 | 34.71 ** | 38.02 ** |