Xuxi Zhang

CONCLUSION  Physical, psychological and social frailty each has a negative association with both physical and  mental HRQoL. The addition of physical frailty contributed to the ability of psychological frailty  to explain mental HRQoL. The associations between social frailty and both physical and mental  HRQoL remain significant when controlling for physical and psychological frailty, which  implicates the importance of improving social support or social contact to improve HRQoL. In  summary, our results confirm the importance of considering the three domains of frailty to  improve physical and mental HRQoL.   40 Chapter 2