TABLE 1

Normal and Abnormal Gastric Emptying at 1, 2, and 4 Hours

	Normal (n)		Abnormal (n)
Timing	Total	Crossovers^*	Total	Crossovers^†
1 h	154	31 (14%–26%)	18	4 (9%–55%)
2 h	140	18 (8%–19%)	34	8 (4%–47%)
4 h	130		45

↵* Patients normal at 1 or 2 h who became abnormal at 4 h.
↵† Patients abnormal at 1 and 2 h who became normal at 4 h.
Data in parentheses are 95% confidence intervals.