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Table 5 Multiple regression models with carer-related QoL measures as dependent variables. The model fit is reported for each model, and the contribution of disease severity (sMMSE) reported (ΔR2 and p-value). Individual variables beta coefficients (including 95% CIs) are also reported

From: Disease severity accounts for minimal variance of quality of life in people with dementia and their carers: analyses of cross-sectional data from the MODEM study

   Coefficients Model change Model
Model Independent variables β B B Lower 95% CI B Upper 95% CI p ΔR2 p Adjusted R2 F p
EQ-5D carer (n = 213)        0.01 0.19 0.12 5.83 < 0.001
Carer gender: Male 0.08 0.04 −0.02 0.10 0.19      
Residential setting: Care home −0.09 − 0.05 −0.13 0.03 0.19      
Carer age −0.13 0.00 −0.01 0.00 0.10      
Relationship: Spouse −0.04 −0.02 −0.10 0.07 0.66      
NPI 0.08 0.00 0.00 0.00 0.24      
ZCBI −0.28 −0.01 −0.01 −0.00 0.00      
DEMQOL-Proxy 0.14 0.00 0.00 0.01 0.03 `     
sMMSE −0.09 −0.00 −0.01 0.00 0.19      
SF-12 Physical Health (n = 273)        0.003 0.37 0.05 2.80 0.01
Carer gender: Male 0.02 0.54 −2.47 3.54 0.72      
Residential setting: Care home −0.12 −3.44 −7.64 0.75 0.11      
Carer age −0.17 −0.18 − 0.35 −0.01 0.04      
Relationship: Spouse −0.03 −0.79 −5.09 3.52 0.72      
NPI 0.03 0.02 −0.10 0.14 0.70      
ZCBI −0.16 −0.13 −0.23 − 0.02 0.02      
DEMQOL-Proxy 0.09 0.08 −0.04 0.19 0.18      
sMMSE −0.0 −0.08 −0.27 0.10 0.37      
SF-12 Mental Health (n = 273)        < 0.001 0.97 0.43 26.56 < 0.001
Carer gender: Male 0.07 1.57 −0.50 3.64 0.14      
Residential setting: Care home −0.09 −2.46 −5.35 0.43 0.10      
Carer age 0.16 0.14 0.02 0.26 0.02      
Relationship: Spouse −0.05 −1.03 −3.99 1.94 0.50      
NPI −0.07 −0.05 −0.13 0.03 0.22      
ZCBI −0.57 −0.39 −0.46 − 0.32 0.00      
DEMQOL-Proxy 0.13 0.10 0.02 0.18 0.02      
sMMSE 0.00 0.00 −0.13 0.13 0.97