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Published online 2013 Nov 18. doi: 10.2147/IJGM.S45449

Table 2

Erection hardness and sexual intercourse success before and after dose increase during the double-blind phase

Subset from smaller study17
Subset from larger study14
Placebo
Sildenafil
Placebo
Sildenafil
Final 50 mg doseInitial 100 mg doseP-valueaFinal 50 mg doseInitial 100 mg doseP-valueaFinal 50 mg doseInitial 100 mg doseP-valueaFinal 50 mg doseInitial 100 mg doseP-valuea
Attempting sexual intercourse, nb64717268107112115112
EHS3, n (%)38 (59)37 (52)0.488137 (51)26 (38)0.129352 (49)60 (54)0.500359 (51)35 (31)0.0030
EHS4, n (%)4 (6)11 (15)0.105423 (32)33 (49)0.05789 (8)20 (18)0.046639 (34)65 (58)0.0003
Intercourse success, n (%)29 (45)45 (63)0.039355 (76)59 (87)0.132044 (42)c60 (54)0.078577 (67)89 (80)0.0369

Notes:

aComparisons between first and last doses were done using Fisher’s exact test
bwith medication use and sexual stimulation
cbased on n = 104 patients with data.

Abbreviation: EHS, Erection Hardness Score; n, number.