Placebo- korrigeret stigning i gangdistance var 45 meter (p < 0, 0001), 46 meter (p < 0, 0001) og 50 meter (p < 0, 0001) for henholdsvis sildenafil 20 mg, 40 mg og 80 mg.
Placebo corrected increases in walk distance were 45 metres (p < 0.0001), 46 metres (p < 0.0001) and 50 metres (p < 0.0001) for sildenafil 20 mg, 40 mg and 80 mg respectively.