Dependent variables for 2nd step of the regression analyses are different types of costs: figures are coefficient (Std. Err.) | ||||||||
Independent variable | Drugs | Hospitalisation | Tests, treatments & Investigations | Consultations | Othera | Total | Total (adjusted for censoring)b | |
n = 228 | n = 228 | n = 228 | n = 228 | n = 228 | n = 228 | n = 228 | ||
Predictors of Costs | ||||||||
Was an ADc completed? (1 = yes; 0 = No) | 0.02 (0.24) | 0.93 (0.58) | 0.47 (0.32) | 0.22 (0.23) | 0.96 (0.51) | 0.64 (0.42) | 0.19 (0.11) | |
Gender(1 = Female, 0 = Male) | 0.05 (0.13) | −0.20 (0.33) | −0.22 (0.17) | −0.06 (0.12) | −0.29 (0.29) | −0.17 (0.24) | −0.05 (0.06) | |
Age (in years) | −0.02 (0.01)* | −0.09 (0.03)* | −0.06 (0.01)* | −0.02 (0.01)* | 0.10 (0.03)* | −0.06 (0.02)* | −0.01 (0.00)* | |
Baseline EQ-5D 3 L score | −0.15 (0.29) | 0.44 (0.68) | 0.44 (0.40) | 0.00 (0.29) | 0.27 (0.55) | 0.30 (0.51) | −0.05 (0.13) | |
Baseline Barthel Index | 0.00 (0.00) | −0.01 (0.01) | −0.01 (0.01) | 0.00 (0.00) | 0.01 (0.01) | −0.01 (0.01) | 0.00 (0.00) | |
Baseline SMMSEd score | 0.02 (0.01) | 0.00 (0.03) | 0.04 (0.02) * | 0.03 (0.01) * | 0.03 (0.03) | 0.01 (0.02) | 0.01 (0.01) | |
Baseline GDS-15e score | 0.00 (0.02) | −0.08 (0.06) | 0.01 (0.03) | 0.01 (0.02) | −0.03 (0.05) | −0.06 (0.04) | −0.01 (0.01) | |
Body mass index | 0.04 (0.01)* | −0.06 (0.03) | −0.01 (0.02) | 0.01 (0.01) | 0.03 (0.03) | −0.03 (0.02) | 0.00 (0.01) | |
Did individual have a QoLf gain at 12 months? (1 = ‘Yes’, 0 otherwise) | −0.11 (0.15) | −0.20 (0.37) | 0.44 (0.21) * | −0.03 (0.15) | 0.48 (0.28) | −0.21 (0.27) | −0.23 (0.17) | |
Dead at 12 months (1 = Yes, 0 = No) | −0.19 (0.16) | 0.20 (0.39) | −0.05 (0.22) | −0.16 (0.15) | 0.74 (0.32) * | 0.09 (0.29) | 0.29 (0.08) * | |
Constant | 8.98 (1.15)* | 20.10 (3.15)* | 13.1 (1.48)* | 8.78 (1.01)* | −4.99 (2.73) | 17.13 (2.04) * | 11.89 (0.47)* | |
R-Squared | 0.19 | 0.09 | 0.18 | 0.09 | 0.08 | 0.10 | 0.25 | |
The dependent variable for each type of cost in the 1st step of the regression analyses is whether or not an individual completed an Advance Directive: figures are coefficient (Std. Err.) | ||||||||
Drugs | Hospitalisation | Tests, treatments & Investigations | Consultations | Othera | Total | Total (adjusted for censoring)b | ||
n = 228 | n = 228 | n = 228 | n = 228 | n = 228 | n = 228 | n = 228 | ||
Predictors of AD completion | ||||||||
Gender (1 = Female, 0 = Male) | 0.12 (0.04)* | 0.10 (0.03)* | 0.12 (0.04)* | 0.17 (0.05)* | 0.12 (0.03)* | 0.10 (0.03)* | 0.12 (0.03)* | |
Age (in years) | 0.03 (0.01)* | 0.03 (0.01)* | 0.03 (0.01)* | 0.04 (0.01)* | 0.03 (0.01)* | 0.03 (0.01)* | 0.04 (0.01*) | |
Baseline SMMSEd score | −0.02 (0.02) | −0.03 (0.02) | −0.03 (0.02) | −0.02 (0.02) | −0.02 (0.02) | −0.03 (0.02) | −0.03 (0.02) | |
Baseline GDS-15e score | 0.08 (0.03)* | 0.09 (0.03)* | 0.09 (0.03)* | 0.09 (0.03)* | 0.12 (0.03)* | 0.09 (0.03)* | 0.09 (0.03)* | |
constant | −2.92 (1.14) | −2.88 (1.16) | −2.66 (1.18) | −3.02 (1.19) | −2.94 (1.23) | −2.97 (1.15) | −2.98 (1.15) | |
Likelihood-ratio test of independent equations | χ2 = 18.60 | χ2 = 34.24 | χ2 = 46.01 | χ2 = 26.12 | χ2 = 9.93 | χ2 = 37.21 | χ2 = 38.60 | |
(p < 0.01) | (p < 0.01) | (p < 0.01) | (p < 0.01) | (p < 0.01) | (p < 0.01) | (p < 0.01) |