. 2020 Mar 4;35(6):955–961. doi: 10.1007/s00455-020-10102-5

Table 2.

Prevalence of drooling (based on Non-Motor Symptoms Scale question 19) at baseline at follow-up

Drooling	Baseline	Follow-up	p value
Entire cohort (n = 728)	271 (37.2%)	292 (40.1%)	0.17^a
Age < 50 years (n = 66)	16 (24.2%)	19 (28.8%)	0.55^a
Age 50–65 years (n = 242)	74 (30.6%)	80 (33.1%)	0.51^a
Age 65–80 years (n = 361)	154 (42.7%)	163 (45.2%)	0.47^a
Age > 80 years (n = 59)	27 (45.8%)	30 (55.8%)	0.66^a
p value (across age groups)	< 0.001^b	0.002^b

Duration of follow-up was 3.27 ± 1.74 years (range 0.5–7.2 years)

^aMcNemar test

^bChi-square test