Prediction of Life Satisfaction in People with Parkinson’s Disease

Table 3

Model 2: multivariable logistic regression analyses with life satisfaction (3-year follow-up) as the dependent variable (personal factor, motor-related aspects, and depressive symptoms as independent variables).

Independent variables	Unadjusted for life satisfaction at baseline, n = 157			Adjusted for life satisfaction at baseline, n = 158
	OR (95 % CI)	Wald	value	OR (95 % CI)	Wald	value
Depressive symptoms (GDS-15)	0.730 (0.607–0.877)	11.310	0.001	0.758 (0.633–0.908)	9.123	0.003
General self-efficacy (GSE)	1.074 (1.010–1.142)	5.224	0.022
Nagelkerke R square			0.240			0.274
Hosmer and Lemeshow test, value			0.660			0.027

OR = odds ratio; CI = confidence interval; GDS-15 = Geriatric Depression Scale (0–15, higher = worse); GSE = General Self-Efficacy Scale (10–40, higher = better). Life satisfaction was assessed with item 1 of the Life Satisfaction Questionnaire (scored 1–6; higher = better), and scores were dichotomized into not satisfied (1–4; coded as 0) and satisfied (5-6; coded as 1). The following 8 independent variables were initially included in the models (backward method): sex; education; general self-efficacy; motor symptoms; walking difficulties; fall-related activity avoidance; difficulties with, or need help in activities of daily living; depressive symptoms. Statistically significant values (0.05) are presented in bold.