Trial · NCT01352507
Registered outcomes13
Each outcome the trial registered, primary first, in ClinicalTrials.gov's words.
1 to 13 of 13
Download this page as JSON| List | Outcome | Time frame | Description |
|---|---|---|---|
| Primary | Percentage of Participants Preferring Tadalafil Over Sildenafil Measured at Week 18 Using Question 1 of the "Phosphodiesterase 5 Inhibitor Treatment Preference" Questionnaire (PITPQ) | Week 18 | PITPQ Question (Q) 1 was a dichotomous outcome measure in which the participant selected his preferred study treatment (tadalafil or sildenafil) to receive during the Extension Phase. |
| Secondary | Percentage of Participants Moderately or Strongly Preferring the Selected Treatment at Week 18 Using Question 2 of the PITPQ | Week 18 | PITPQ Q2 was a measure of the degree of treatment preference based on the participant's opinion. The question was, "For the treatment preference you selected in Q1, what is your degree of preference?". Choices were moderate or strong. |
| Secondary | Change in International Index of Erectile Function (IIEF) Overall Satisfaction Domain | Baseline, Week 8, and Week 18 | Self-reported overall satisfaction over the past 4 weeks. IIEF overall satisfaction was the sum of Q13 and Q14. Scores ranged from 1 (low/no satisfaction) to 5 (high satisfaction) for each question, with the total possible score for the 2 questions ranging from 2 to 10. Change was defined as endpoint minus baseline domain score. Change in IIEF overall satisfaction domain at Week 8 and Week 18 were averaged to produce an overall change in IIEF overall satisfaction domain score. Higher IIEF overall satisfaction domain scores were indicative of greater overall satisfaction. |
| Secondary | Change in Sexual Encounter Profile (SEP) Question 2 | Baseline, Week 8, and Week 18 | Participant-assessed diary that assessed the mean change from baseline in the percentage of "yes" responses to SEP Q2, "Were you able to insert your penis into your partner's vagina?". The SEP Q2 score was determined as the percentage of "yes" responses to SEP Q2 out of all sexual attempts recorded during the time period. Change was defined as the percentage of "yes" responses at endpoint minus the percentage of "yes" responses at baseline. Change in percentage of "yes" responses to SEP Q2 at Week 8 and Week 18 were averaged to produce an overall change in SEP Q2. |
| Secondary | Change in Psychosocial and Interpersonal Relationship Scale (PAIRS) Sexual Self-Confidence Domain | Baseline, Week 8, and Week 18 | PAIRS was a self-administered, 29-item scale that assessed the broader psychological and interpersonal outcomes associated with ED and its treatment. Each question was rated on a Likert scale that ranged from 1 (strongly disagree) to 4 (strongly agree). The sexual self-confidence domain score was the average score for Items 5, 10, 15, 23, 27, and 29. Sexual self-confidence domain scores ranged from 1 (strongly disagree) to 4 (strongly agree). Change was defined as endpoint minus baseline domain score. Change in PAIRS sexual self-confidence domain scores at Week 8 and Week 18 were averaged to produce an overall change in PAIRS sexual self-confidence domain score. Higher scores were indicative of greater sexual self-confidence. |
| Secondary | Drug Attributes Questionnaire (DRAQ) at Week 18 | Week 18 | DRAQ was a questionnaire used to record explanations for why participants preferred a drug. Participants identified their first and second reasons for drug preference from a choice of 7 reasons. Each reason for drug preference includes participants who selected that reason as their first or second reason. |
| Secondary | Change in International Index of Erectile Function (IIEF) Intercourse Satisfaction Domain | Baseline, Week 8, and Week 18 | Self-reported intercourse satisfaction over the past 4 weeks. IIEF intercourse satisfaction was the sum of Q6, Q7, and Q8 of the IIEF. Scores ranged from 0 (low/no satisfaction) to 5 (high satisfaction) for each question, with the total possible score for the 3 questions ranging from 0 to 15. Change was defined as endpoint minus baseline domain score. Change in IIEF intercourse satisfaction domain at Week 8 and Week 18 were averaged to produce an overall change in IIEF intercourse satisfaction domain score. Higher scores were indicative of an increase in intercourse satisfaction. |
| Secondary | Change in International Index of Erectile Function (IIEF) Sexual Desire Domain | Baseline, Week 8, and Week 18 | Self-reported sexual desire over the past 4 weeks. IIEF sexual desire was the sum of Q11 and Q12. Scores ranged from 1 (low/almost never) to 5 (very high/almost always) for each question, with the total possible score for the 2 questions ranging from 2 to 10. Change was defined as endpoint minus baseline domain score. Change in IIEF sexual desire domain at Week 8 and Week 18 were averaged to produce an overall change in IIEF sexual desire domain score. Higher scores were indicative of increased sexual desire. |
| Secondary | Change in International Index of Erectile Function (IIEF) Orgasmic Function Domain | Baseline, Week 8, and Week 18 | Self-reported orgasmic function over the past 4 weeks. IIEF orgasmic function was the sum of Q9 and Q10 of the IIEF. Scores ranged from 0 (no stimulation) to 5 (almost always) for each question, with the total possible score for the 2 questions ranging from 0 to 10. Change was defined as endpoint minus baseline domain score. Change in IIEF orgasmic function domain at Week 8 and Week 18 were averaged to produce an overall change in IIEF orgasmic function domain score. Higher scores were indicative of better orgasmic function. |
| Secondary | Change in Sexual Encounter Profile (SEP) Question 3 | Baseline, Week 8, and Week 18 | Participant-assessed diary that assessed the mean change from baseline in the percentage of "yes" responses to SEP Q3, "Did your erection last long enough for you to have successful intercourse?". The SEP Q3 score was determined as the percentage of "yes" responses to SEP Q3 out of all sexual attempts recorded during the time period. Change was defined as the percentage of "yes" responses at endpoint minus percentage of "yes" responses at baseline. Change in the percentage of "yes" responses to SEP Q3 at Week 8 and Week 18 were averaged to produce an overall change in SEP Q3. |
| Secondary | Change in PAIRS Spontaneity Domain | Baseline, Week 8, and Week 18 | PAIRS was a self-administered, 29-item scale that assessed the broader psychological and interpersonal outcomes associated with ED and its treatment. Each question was rated on a Likert scale that ranged from 1 (strongly disagree) to 4 (strongly agree). The spontaneity domain score was the average score for Items 3, 12, 13, 16, 17, 19, 21, 22, and 28. Spontaneity domain scores ranged from 1 (strongly disagree) to 4 (strongly agree). Change was defined as endpoint minus baseline domain score. Change in PAIRS spontaneity domain at Week 8 and Week 18 were averaged to produce an overall change in PAIRS spontaneity domain score. Higher scores were indicative of greater spontaneity. |
| Secondary | Change in PAIRS Time Concerns Domain | Baseline, Week 8, and Week 18 | PAIRS was a self-administered, 29-item scale that assessed the broader psychological and interpersonal outcomes associated with ED and its treatment. Each question was rated on a Likert scale that ranged from 1 (strongly disagree) to 4 (strongly agree). The time concerns domain score was the average score for Items 1, 2, 6, 7, 8, 20, 24, and 25. Time concern domain scores ranged from 1 (strongly disagree) to 4 (strongly agree). Change was defined as endpoint minus baseline domain score. Change in PAIRS time concerns at Week 8 and Week 18 were averaged to produce an overall change in PAIRS time concerns domain score. Higher scores were indicative of more time concerns. |
| Secondary | Change in International Index of Erectile Function (IIEF) Erectile Function Domain | Baseline, Week 8, and Week 18 | Self-reported erectile function over the past 4 weeks. IIEF erectile function was the sum of Q1 through Q5 and Q15 of the IIEF. Q1 through Q5 were scored 0 (low/no erectile function) to 5 (high erectile function) and Q15 was scored 1 (no/low confidence) to 5 (high confidence). IIEF erectile function domain scores ranged from 1 to 30. Change was defined as endpoint minus baseline domain score. Change in IIEF erectile function domain at Week 8 and Week 18 were averaged to produce an overall change in IIEF EF domain score. Higher scores were indicative of better erectile function. |
Source ClinicalTrials.govtrials-2026-11-12-0.5.0
Sources 3
- ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
- ClinicalTrials.govNo license stated
- NIH RePORTER's clinical studies and project filesPublic domain
Each source's terms
- ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
- ClinicalTrials.govnone stated
- NIH RePORTER's clinical studies and project filesPublic domain (NIH RePORTER)
ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.
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