Fig. 1
From: Motor fluctuations due to interaction between dietary protein and levodopa in Parkinson’s disease
General characteristics of all patients who exhibited protein interaction with levodopa a Age at motor onset, b duration of disease, c maximal daily levodopa dose, d years on levodopa, e percentage of patients on a dopamine agonist and f percentage with first or second degree relative with parkinsonism. (PIL; black bars) compared to those that did not (no-PIL: all; white bars) and subgroups of PIL patients with motor fluctuations (no-PIL:mot-fluct; gradient bars) and no-PIL patients matched for disease-duration (no-PIL: dis-dur; light gray bars) and age-at-motor-onset (no-PIL: age-ons; dark gray bars). The numbers of patients represented in each graph are inset. P values represent results of the chi-square or Mann–Whitney test comparing each no-PIL group to the PIL group. Legend: PIL: protein interaction with levodopa, no-PIL: no protein interaction with levodopa