Table 5. Final multivariable model for quality of life.

Variable	β [95% CI]	Standardised β [95% CI]
Number of chronic conditions	-0.76 [-0.97;-0.54]	-1.23 [-1.57;-0.89]
Sex (female vs. male)	0.84 [0.65;1.03]	0.84 [0.65;1.03]
Age0.5	8.33 [6.63;10.03]	5.02 [3.99;6.05]
Age2	-0.004 [-0.005;-0.003]	-5.32 [-6.33;-4.32]
Education (ref. high)
medium	-0.65 [-0.93;-0.38]	-0.65 [-0.93;-0.38]
low	-2.15 [-2.45;-1.84]	-2.15 [-2.45;-1.84]
Employment (ref. employed)
retired	0.17 [-0.17;0.51]	0.17 [-0.17;0.51]
homemaker	-0.51 [-0.95;-0.07]	-0.51 [-0.95;-0.06]
other	-1.55 [-2.33;-0.77]	-1.55 [-2.33;-0.77]
unemployed	-2.46 [-3.08;-1.84]	-2.46 [-3.08;-1.83]
permanently sick or disabled	-3.20 [-3.85;-2.55]	-3.20 [-3.85;-2.55]
Living alone (yes vs. no)	2.62 [2.32;2.92]	2.62 [2.32;2.92]
Income in quintiles (ref. highest)
4	-1.74 [-2.10;-1.38]	-1.74 [-2.10;-1.38]
3	-2.82 [-3.19;-2.45]	-2.82 [-3.19;-2.45]
2	-3.87 [-4.25;-3.48]	-3.87 [-4.25;-3.48]
1 (lowest)	-5.79 [-6.19;-5.39]	-5.79 [-6.19;-5.39]
Symptoms (ref. 0)
1	-3.04 [-3.28;-2.80]	-3.04 [-3.28;-2.80]
2	-5.99 [-6.32;-5.67]	-6.00 [-6.32;-5.67]
3+	-8.73 [-9.15;-8.31]	-8.73 [-9.15;-8.31]
Polypharmacy (≥5 drugs vs. <5 drugs)	-1.43 [-1.72;-1.14]	-1.43 [-1.72;-1.14]
Loneliness (scale 3–9) (ref. not lonely)
4	-4.36 [-4.63;-4.10]	-4.36 [-4.63;-4.10]
5	-8.91 [-9.25;-8.57]	-8.91 [-9.25;-8.57]
6	-12.99 [-13.38;-12.60]	-12.99 [-13.38;-12.60]
7	-16.22 [-16.81;-15.63]	-16.22 [-16.81;-15.63]
8	-18.31 [-19.14;-17.47]	-18.31 [-19.14;-17.47]
9 (very lonely)	-23.49 [-24.27;-22.72]	-23.50 [-24.27;-22.72]
Difficulties with ADL/IADL (yes vs. no)	-4.27 [-4.56;-3.97]	-4.27 [-4.56;-3.97]
Constant	31.71 [20.90;42.52]	80.88 [78.47;83.28]

CI = Confidence Interval.

ADL = Activities of Daily Living.

IADL = Instrumental Activities of Daily Living.

Age^0.5 = Fractional Polynomial 1.

Age² = Fractional Polynomial 2.