Non-motor symptoms of the participants compared between nutritional states.

*Statistically significant difference between SGA classifications (pAbbreviations: ACE-R = Addenbrooke's Cognitive Examination-Revised; BDI = Beck's Depression Inventory; MCAS = Modified Constipation Assessment Scale; MMSE = Mini-Mental State Examination; SCOPA-AUT = Scales for Outcomes in Parkinson's disease – Autonomic; SGA = Subjective Global Assessment; STAI = Spielberger Trait Anxiety Inventory.*SGA（Subjective Global Assessment，主观整体评估）分类间存在统计学显著性差异（p），相关缩写说明如下： ACE-R = 艾森布鲁克认知检查修订版（Addenbrooke's Cognitive Examination-Revised） BDI = 贝克抑郁量表（Beck's Depression Inventory） MCAS = 改良便秘评估量表（Modified Constipation Assessment Scale） MMSE = 简易精神状态检查（Mini-Mental State Examination） SCOPA-AUT = 帕金森病自主神经结局量表（Scales for Outcomes in Parkinson's disease – Autonomic） SGA = 主观整体评估 STAI = 斯皮尔伯格特质焦虑问卷（Spielberger Trait Anxiety Inventory）