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Daily-living physical activity counts (Y-axis) in PIGD, TD, and healthy control (HC) (X-axis), controlling for age, sex, and BMI. * Difference statistically significant (p < 0.017) even after adjusting for multiple comparisons using Bonferroni corrections. The interaction age *group* body-mass index (BMI) was significant (p < 0.001) and the associations with group persisted (p = 0.007) also after removing the only subject with H&Y stage 4 in ON from the PIGD subgroup (p = 0.011).
