Table 2.

—Rise in Pressure Over Baseline Values (mm Hg) at Various Sites During Hard and Soft Cough in the Young and the Elderly Subjects

	Δ Pressure, mm Hg
	UES		Esophagus		LES		Gastric
Cough Event	Young	Elderly	Young	Elderly	Young	Elderly	Young	Elderly
Soft cough	114 ± 84a,b	138 ± 120a,c	27 ± 27b	19 ± 14b	30 ± 26b	22 ± 19c	29 ± 26b	19 ± 13b
Hard cough	188 ± 102a	255 ± 124a	57 ± 28	52 ± 23	56 ± 26	68 ± 39	57 ± 26	57 ± 25

Data are presented as mean ± SD. P value is not significant for young vs elderly subjects. See Table 1 for expansion of abbreviations.

^a.P < .001 UES vs esophagus, LES, and gastric.

^b.P < .01 soft vs hard cough.

^c.P < .001 soft vs hard cough.