Fig. 2From: How useful is the EQ-5D in assessing the impact of caring for people with Alzheimer’s disease?Change in caregiver ZBI total score by EQ-5D domain change category from baseline to 18 months (n = 931). Change in EQ-5D domain data were missing for three of these caregivers. EQ-5D, EuroQol-5 dimension questionnaire; ZBI, Zarit Burden InterviewBack to article page