Table 1.

Summary of forearm blood flow changes between Days 1, 7, and 14, before and after smoking 1 cigarette

	Change in blood flow (mL/min)
	Change	N	Mean	SD
Before smoking	Day 14–Day 1	20	–0.09	1.01
	Day 7–Day 7	21	–0.33	0.80
	Day 14–Day 1	20	0.25	0.75
After smoking	Day 14–Day 7	20	–0.07	1.22
	Day 7–Day 1	21	0.08	1.23
	Day 14–Day 7	20	–0.18	1.39