Table 1.

Subject demographics in erythromycin and azithromycin studies.

	Sildenafil+ Erythromycin (n = 13)	Sildenafil+ Placebo (n = 13)	Sildenafil+ Azithromycin (n = 12)	Sildenafil+ Placebo (n = 12)
Age range (y)	18–43	19–45	19–33	19–25
Mean	29	28	24	22
Weight range (kg)	58–94	62–87	60–82	57–87
Mean	72	73	71	71
Height range (cm)	165–195	169–194	164–186	165–186
Mean	179	180	179	174