TABLE 3

Reference Range and Reproducibility of Half-Times of Gastric Emptying for Men and Women Combined

	Reference range (min)^*				Reproducibility (min)
	LAO		A-P		LAO		A-P
Age category	Mean ± SD	Range	Mean ± SD	Range	Mean ± SD	Range	Mean ± SD	Range
20–40 y	33.3 ± 15.9	20–60	31.8 ± 17.4	13–56	12.8 ± 10.8	4–27	15.6 ± 11.5	8–35
40–60 y	25.8 ± 13.2	9–44	27.1 ± 11.3	12–42	9.0 ± 6.5	1–18	6.3 ± 6.4	0–18
60–80 y	18.1 ± 6.2	9–26	19.7 ± 4.0	15–26	9.8 ± 6.1	2–18	5.2 ± 5.0	0–13

↵* Determined from first of 2 studies in each subject.
A-P = anterior–posterior.