Fig. 4.

Symptoms or side effects of Parkinson’s disease that were reported as a priority for improvement more frequently with disease duration. Percentages show the respondents with a duration of <2 years (n = 134), 2–5 years (n = 313), 6–10 years (n = 209) and 11 + years (n = 126) reporting (a) balance and falls, (b) walking, (c) speech, (d) freezing, (e) dyskinesia, and (f) medication wearing-off within their 3 priority areas. Statistical significant between duration groups (Dunn’s multiple comparisons tests) are presented as asterisks: ^*p < 0.05; ^**p < 0.01; ^***p < 0.001; ^****p < 0.0001. Responses from bereaved partners, family members or friends have been excluded as no duration data is available.