Conclusions
IADL disability, dizziness, PD, status impairment, ADL/IADL disability
In this large transversal study, the results indicate that impaired ADLs/IADLs was positively associated with PD, but not PH. In clinical practice, health care professionals should pay attention to assessing whether there is a problem of self-reported dizziness in patients with disabilities. It may be important to evaluate self-reported dizziness among older adults with ADL/IADL disability after they stand up from a supine position. The care giver will take the caution in caring the older adults with either ADL or IADL disability, especially concomitantly with PD. In addition, older adults with PD must be checked for their functional status. In addition, this study provided a further research direction for underlying mechanism between functional status impairment and PD.