4,505 PwPD (49% women, mean age 68) and 1829 PwoPD (77% women, mean age 62) responded. Of PwoPD, 910 (50%) had a first-degree relative with PD.
More than 99% of both PwPD and PwoPD indicated interest in participating in other research activities. Completing online surveys (90% PwPD, 94% PwoPD), giving blood (78%PwPD, 81%PwoPD) or saliva (81% PwPD, 84%PwoPD), and participating in telemedicine evaluations (76% PwPD, 79%PwoPD) were endorsed by most. PwPD were more willing to engage in medication trials (60%) compared to PwoPD (40%).
Barriers to research participation were identified by 78% in both groups. Distance from home to the research facility was a major concern for both PwPD (57%) and PwoPD (56%). Other concerns varied across groups. Transportation was a greater concern for PwPD (31% PwPD, 18% of PwoPD). PwoPD were more concerned than those with PD about privacy of information (20% PwoPD, 13% PwPD) and the time required to participate in research activities (33% PwoPD, 26% PwPD).
While individuals with and without PD in this online research study demonstrate a strong willingness to participate in other research activities, concerns such as transportation, time commitment, and complexity of research instructions remain significant barriers. Addressing these concerns may enhance research participation.