Fig. 2From: Self-efficacy and well-being in the association between caregiver burden and sleep quality among caregivers of elderly patients having multiple chronic conditions in rural China: a serial multiple mediation analysisThe chain mediation of self-efficacy and well-being between caregiver burden and sleep quality(**p < 0.01, ***p < 0.001)Note. **p < 0.01, ***p < 0.001Back to article page