Table 1. Comparison of results of simple linear regressions from period II and III in the temporal pattern of excretion of lactulose and mannitol in 40 healthy female participants.

Placebo v/s aspirin for each segment					Between periods (II vs. III) for each treatment
Sugar	Period (h)	t	df	p value	Sugar	Treatment	t	df	p value
Mannitol	II (2.5–4)	1.3	18	NS	Mannitol	Placebo	4.3	18	0.001
	III (4.5–6)	0.47	18	NS		Aspirin	2.95	18	0.009
Lactulose	II (2.5–4)	2.13	18	0.05	Lactulose	Placebo	2.13	18	0.05
	III (4.5–6)	0.45	18	NS		Aspirin	2.23	18	0.04

df = degrees of freedom.