Table 6.

Rome III Classification of Patients with Chronic Nausea and Vomiting

	CUNV with normal gastric emptying† N=106		Gastroparesis* N=319		P‡
	N	%	N	%
Functional dyspepsia, if no structural disease explains it					0.87
Yes	92	86.8	273	85.6
No	14	13.2	46	14.4
Functional dyspepsia: Postprandial Distress Syndrome or PDS					1.00
Yes	93	87.7	280	87.8
No	13	12.3	39	12.2
Functional dyspepsia: Epigastric Pain Syndrome, EPS					0.50
Yes	4	3.8	8	2.5
No	102	96.2	311	97.5
Chronic idiopathic nausea, or CIN if no abnormalities with upper endoscopy or no metabolic disease					0.0004
Yes	48	45.3	84	26.3
No	58	54.7	235	73.7
Functional vomiting, if no eating disorder/rumination/major DSM-IV classification					0.03
Yes	32	30.2	135	42.3
No	74	69.8	184	57.7
Rumination Syndrome in Adults					1.00
Yes	2	1.9	8	2.5
No	104	98.1	311	97.5

^*Gastroparesis; based on delayed gastric emptying scintigraphy >60% retention at 2 hours or >10% retention at 4 hours.

^†Chronic Unexplained Nausea and Vomiting

^‡P values based on Fishers exact test