Nonmotor Symptoms in a Malaysian Parkinson’s Disease Population

Table 5

Prevalence rate of gastrointestinal symptoms in studies using NMSQuest.

Source	𝑛	Location	Prevalence
Khedr et al. [43]	112	Assiut, Egypt	76.80%
Gan et al. [44]	155	Shanghai, China	64.56% (constipation)
Jia et al. [45]	170	Nanjing, China	68.2% (constipation)
Bostantjopoulou et al. [46]	166	Thessaloniki, Greece	45.7% (constipation)
Tsuboi et al. [47]	53	Fukuoka, Japan	78.4% (constipation)
Cheon et al. [48]	74	Busan, Republic of Korea	65.8% (constipation)
Yu et al. [49]	90	Shandong, China	70% (constipation)
Gallagher et al. [41]	89	London, UK	48% (constipation)
Crosiers et al. [50]	215	Antwerp, Belgium	38.6% (constipation)
Cosentino et al. [51]	300	Lima, Peru	55.7% (constipation)
Rodríguez-Violante et al. [52]	100	Mexico City, Mexico	30%
Barone et al. [16]	1072	Italy	27.5% (constipation)