Urinary IncontinencePhase 2/3SISTErNCT00064662
Comparison of Surgical Procedures to Reduce Urinary Stress Incontinence
A Phase 2/3 study testing Burch Modified Tanagho and Autologous Fascia Sling in people with Urinary Incontinence, run by Carelon Research at 9 sites in United States.
Trial summary
The primary aim of this clinical trial is to compare the treatment success for two surgical procedures that are frequently used and have similar cure rates, yet have not been compared directly to each other in a large, rigorously conducted randomized trial. Read more about this study
- Who is it for?
- Ages 21 years and older, women onlyHealthy volunteers can take part
- Conditions the study is for
- Urinary Incontinence
- What is being tested?
- Burch Modified Tanagho and Autologous Fascia Sling
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 655 participants
- Where
- 9 sitesUnited States
- Study dates
- Feb 2002to Mar 2010
- Phase
- Phase 2/3
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 21 years and older
- Women only
- Healthy volunteers accepted
- Adult, Older adult
- Predominant stress urinary incontinence by self-report,examination and test;
- Urethral hypermobility;
- Eligible for both surgical procedures;
- Ambulatory;
- Not pregnant;
- >12 months post-partum;
- No systemic disease known to affect bladder function;
- No current chemotherapy or radiation therapy;
- No urethral diverticulum, augmentation cytoplasty, or artificial sphincter;
- No recent pelvic surgery;
- Available for follow-up and able to complete study assessments;
- Signed informed consent.
Trial locations and contacts
9 sites in 1 country.
9 sites in 1 country
United States9 sites
University of Maryland
Baltimore, Maryland, 21201
University of Alabama
Birmingham, Alabama, 35249-7333
University of Texas, Southwestern
Dallas, Texas, 75390-9110
Loyola University Medical Center
Maywood, Illinois, 60153
University of Pittsburgh
Pittsburgh, Pennsylvania, 15213
Beaumont Hospital
Royal Oak, Michigan, 48073
University of Utah
Salt Lake City, Utah, 84132
University of Texas Health Sciences Center
San Antonio, Texas, 78229-3900
University of California
San Diego, California, 92037
About this study
Official title: Randomized Clinical Trial of the Burch Modified Tanagho and Autologous Fascia Sling Procedures for Women With Predominantly Stress Urinary Incontinence
The primary aim of this clinical trial is to compare the treatment success for two surgical procedures that are frequently used and have similar cure rates, yet have not been compared directly to each other in a large, rigorously conducted randomized trial. The secondary aims of the trial are to compare other outcomes for the two surgical procedures, including quality of life, sexual function, satisfaction with treatment outcomes, complications, and need for other treatment(s)after surgery. Follow-up will be a minimum of two years and up to four years.
- Conditions
- Urinary Incontinence
- Being tested
- Burch Modified Tanagho, Autologous Fascia Sling
- Keywords
- Stress urinary incontinence, Surgery
- Medical subject headings
- Urinary Incontinence, Urinary Incontinence, Stress
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Burch Modified TanaghoProcedure or surgery
The Burch colposuspension is a well-established procedure for surgically treating women with stress urinary incontinence. The Burch modified colposuspension suspends the anterior vaginal wall (at the level of the bladder neck) with permanent sutures tied to the iliopectineal ligament.
Autologous Fascia SlingProcedure or surgery
The fascial sling is also a well-established procedure for surgically treating women with stress urinary incontinence. The autologous sling procedure places a harvested strip of rectus fascia transvaginally at the level of the proximal urethra. The fascial strip is secured superiorly to the rectus fascia with permanent sutures
| Study group | Role | What they receive |
|---|---|---|
| Burch | Other | The Burch colposuspension Receives: Procedure: Burch Modified Tanagho |
| Sling | Other | Pubovaginal sling, using autologous rectus fascia Receives: Procedure: Autologous Fascia Sling |
What is being measured
The primary outcome is the main question the study is designed to answer.
24 Month Cumulative Success Rate Computed From Kaplan Meier Time-to-event Analysis (Reported as Percent Success).
Success defined as composite measure including: no self-reported incontinence symptoms reported on the Medical, Epidemiologic, and Social Aspects of Aging Project (MESA) questionnaire, <15g in pad weight during 24 hr pad test, no incontinence episodes on 3-day voiding diary, negative results (no leakage) on provocative stress test at standardized bladder volume, no retreatment for urinary incontinence. Additional treatment for stress urinary incontinence (SUI) includes anti-incontinence surgery, tightening of sling, collagen injections, medication, behavioral treatment, or devices specifically for the treatment of SUI.
Measured: Two years
24 Month Cumulative Stress Specific Success Rates Computed From Kaplan Meier Time-to-event Analysis (Reported as % Success)
Stress-specific success defined by composite measure including: no self-reported symptoms of stress incontinence reported on the Medical, Epidemiologic, and Social Aspects of Aging Project (MESA) questionnaire , negative results (no leakage) on a provocative stress test at standardized bladder volume and no retreatment for stress incontinence Additional treatment for SUI includes anti-incontinence surgery, tightening of sling, collagen injections, medication, behavioral treatment, or devices specifically for the treatment of SUI.
Measured: Two years
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted11 Jul 2003 (estimated)
- Study startFeb 2002
- Primary completionJun 2006
- Study completionMar 2010
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (39)Papers the sponsor has linked to this study.
- Other trials for Urinary IncontinenceStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 2/3
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 655 participants (actual)
Sponsor and investigators
- Lead sponsor
- Carelon Research
- Sponsor type
- University, hospital or other
- Collaborators
- University of Alabama at Birmingham, University of California, San Diego, University of Maryland, University of Pittsburgh, University of Texas, The University of Texas at San Antonio, University of Utah, Beaumont Hospital, Loyola University
- Responsible party
- Sponsor
- Investigators
- William D. Steers, M.D., Study chair, University of Virginia
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00064662
- Sponsor's protocol ID
- UITN-RCT (completed)
- Acronym
- SISTEr
- Status last verified
- May 2013
- First submitted
- 10 Jul 2003
- Last updated
- 10 May 2013
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
Publications
Albo M, Wruck L, Baker J, Brubaker L, Chai T, Dandreo KJ, Diokno A, Goode P, Kraus S, Kusek JW, Lemack G, Lowder J, Steers W; Urinary Incontinence Treatment Network. The relationships among measures of incontinence severity in women undergoing surgery for stress urinary incontinence. J Urol. 2007 May;177(5):1810-4. doi: 10.1016/j.juro.2007.01.032.
PubMed 17437826Albo ME, Richter HE, Brubaker L, Norton P, Kraus SR, Zimmern PE, Chai TC, Zyczynski H, Diokno AC, Tennstedt S, Nager C, Lloyd LK, FitzGerald M, Lemack GE, Johnson HW, Leng W, Mallett V, Stoddard AM, Menefee S, Varner RE, Kenton K, Moalli P, Sirls L, Dandreo KJ, Kusek JW, Nyberg LM, Steers W; Urinary Incontinence Treatment Network. Burch colposuspension versus fascial sling to reduce urinary stress incontinence. N Engl J Med. 2007 May 24;356(21):2143-55. doi: 10.1056/NEJMoa070416. Epub 2007 May 21.
PubMed 17517855Brubaker L, Chiang S, Zyczynski H, Norton P, Kalinoski DL, Stoddard A, Kusek JW, Steers W; Urinary Incontinence Treatment Network. The impact of stress incontinence surgery on female sexual function. Am J Obstet Gynecol. 2009 May;200(5):562.e1-7. doi: 10.1016/j.ajog.2008.11.017. Epub 2009 Mar 16.
PubMed 19286143Brubaker L, Stoddard A, Richter H, Zimmern P, Moalli P, Kraus SR, Norton P, Lukacz E, Sirls L, Johnson H; Urinary Incontinence Treatment Network. Mixed incontinence: comparing definitions in women having stress incontinence surgery. Neurourol Urodyn. 2009;28(4):268-73. doi: 10.1002/nau.20698.
PubMed 19274758Burgio KL, Brubaker L, Richter HE, Wai CY, Litman HJ, France DB, Menefee SA, Sirls LT, Kraus SR, Johnson HW, Tennstedt SL. Patient satisfaction with stress incontinence surgery. Neurourol Urodyn. 2010 Nov;29(8):1403-9. doi: 10.1002/nau.20877.
PubMed 20976815Chai TC, Albo ME, Richter HE, Norton PA, Dandreo KJ, Kenton K, Lowder JL, Stoddard AM; Urinary Incontinence Treatment Network. Complications in women undergoing Burch colposuspension versus autologous rectus fascial sling for stress urinary incontinence. J Urol. 2009 May;181(5):2192-7. doi: 10.1016/j.juro.2009.01.019. Epub 2009 Mar 17.
PubMed 19296969FitzGerald MP, Burgio KL, Borello-France DF, Menefee SA, Schaffer J, Kraus S, Mallett VT, Xu Y; Urinary Incontinence Treatment Network. Pelvic-floor strength in women with incontinence as assessed by the brink scale. Phys Ther. 2007 Oct;87(10):1316-24. doi: 10.2522/ptj.20060073. Epub 2007 Aug 7.
PubMed 17684087Kenton K, Richter H, Litman H, Lukacz E, Leng W, Lemack G, Chai T, Arisco A, Tennstedt S, Steers W; Urinary Incontinence Treatment Network. Risk factors associated with urge incontinence after continence surgery. J Urol. 2009 Dec;182(6):2805-9. doi: 10.1016/j.juro.2009.08.032. Epub 2009 Oct 17.
PubMed 19837421Kirby AC, Nager CW, Litman HJ, FitzGerald MP, Kraus S, Norton P, Sirls L, Rickey L, Wilson T, Dandreo KJ, Shepherd JP, Zimmern P; Urinary Incontinence Treatment Network. Preoperative voiding detrusor pressures do not predict stress incontinence surgery outcomes. Int Urogynecol J. 2011 Jun;22(6):657-63. doi: 10.1007/s00192-010-1336-5. Epub 2010 Dec 10.
PubMed 21153471Kraus SR, Markland A, Chai TC, Stoddard A, FitzGerald MP, Leng W, Mallett V, Tennstedt SL; Urinary Incontinence Treatment Network. Race and ethnicity do not contribute to differences in preoperative urinary incontinence severity or symptom bother in women who undergo stress incontinence surgery. Am J Obstet Gynecol. 2007 Jul;197(1):92.e1-6. doi: 10.1016/j.ajog.2007.03.072.
PubMed 17618773Lemack GE, Krauss S, Litman H, FitzGerald MP, Chai T, Nager C, Sirls L, Zyczynski H, Baker J, Lloyd K, Steers WD; Urinary Incontinence Treatment Network. Normal preoperative urodynamic testing does not predict voiding dysfunction after Burch colposuspension versus pubovaginal sling. J Urol. 2008 Nov;180(5):2076-80. doi: 10.1016/j.juro.2008.07.027. Epub 2008 Sep 18.
PubMed 18804239Lemack GE, Xu Y, Brubaker L, Nager C, Chai T, Moalli P, Kraus SR, Kerr L, Sirls L, Stoddard A; Urinary Incontinence Treatment Network. Clinical and demographic factors associated with valsalva leak point pressure among women undergoing burch bladder neck suspension or autologous rectus fascial sling procedures. Neurourol Urodyn. 2007;26(3):392-6. doi: 10.1002/nau.20325.
PubMed 17304525Mallett VT, Brubaker L, Stoddard AM, Borello-France D, Tennstedt S, Hall L, Hammontree L; Urinary Incontinence Treatment Network. The expectations of patients who undergo surgery for stress incontinence. Am J Obstet Gynecol. 2008 Mar;198(3):308.e1-6. doi: 10.1016/j.ajog.2007.09.003.
PubMed 18313452Markland AD, Kraus SR, Richter HE, Nager CW, Kenton K, Kerr L, Xu Y; Urinary Incontinence Treatment Network. Prevalence and risk factors of fecal incontinence in women undergoing stress incontinence surgery. Am J Obstet Gynecol. 2007 Dec;197(6):662.e1-7. doi: 10.1016/j.ajog.2007.08.062.
PubMed 18060972Nager CW, Albo ME, Fitzgerald MP, McDermott S, Wruck L, Kraus S, Howden N, Norton P, Sirls L, Varner E, Zimmern P; Urinary Incontinence Treatment Network. Reference urodynamic values for stress incontinent women. Neurourol Urodyn. 2007;26(3):333-40. doi: 10.1002/nau.20348.
PubMed 17315221
Study at a glance
From the registry record, last updated by the sponsor on 10 May 2013. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Randomized Clinical Trial of the Burch Modified Tanagho and Autologous Fascia Sling Procedures for Women With Predominantly Stress Urinary Incontinence
- ClinicalTrials.gov ID
- NCT00064662
- Acronym / sponsor ID
- SISTEr / UITN-RCT (completed)
- Conditions
- Urinary Incontinence
- Keywords
- Stress urinary incontinence, Surgery
- Phase
- Phase 2/3
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 655 participants (actual)
- Lead sponsor
- Carelon ResearchUniversity, hospital or other
- Collaborators
- University of Alabama at Birmingham, University of California, San Diego, University of Maryland, University of Pittsburgh, University of Texas, The University of Texas at San Antonio, University of Utah, Beaumont Hospital, Loyola University
- Study start
- Feb 2002
- Primary completion
- Jun 2006 (actual)
- Study completion
- Mar 2010 (actual)
- First posted
- 11 Jul 2003 (estimated)
- Results
- Posted 28 Sep 2012
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The primary aim of this clinical trial is to compare the treatment success for two surgical procedures that are frequently used and have similar cure rates, yet have not been compared directly to each other in a large, rigorously conducted randomized trial. The secondary aims of the trial are to compare other outcomes for the two surgical procedures, including quality of life, sexual function, satisfaction with treatment outcomes, complications, and need for other treatment(s)after surgery. Follow-up will be a minimum of two years and up to four years.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Burch | Other | Procedure: Burch Modified TanaghoThe Burch colposuspension |
| Sling | Other | Procedure: Autologous Fascia SlingPubovaginal sling, using autologous rectus fascia |
Who may qualify
- Ages
- 21 years and older
- Sex
- Female only
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Burch Modified TanaghoThe Burch colposuspension is a well-established procedure for surgically treating women with stress urinary incontinence. The Burch modified colposuspension suspends the anterior vaginal wall (at the level of the bladder neck) with permanent sutures tied to the iliopectineal ligament. | Procedure or surgery | Burch |
| Autologous Fascia SlingThe fascial sling is also a well-established procedure for surgically treating women with stress urinary incontinence. The autologous sling procedure places a harvested strip of rectus fascia transvaginally at the level of the proximal urethra. The fascial strip is secured superiorly to the rectus fascia with permanent sutures | Procedure or surgery | Sling |
Primary outcome
24 Month Cumulative Success Rate Computed From Kaplan Meier Time-to-event Analysis (Reported as Percent Success).
Time frame: Two years
Success defined as composite measure including: no self-reported incontinence symptoms reported on the Medical, Epidemiologic, and Social Aspects of Aging Project (MESA) questionnaire, <15g in pad weight during 24 hr pad test, no incontinence episodes on 3-day voiding diary, negative results (no leakage) on provocative stress test at standardized bladder volume, no retreatment for urinary incontinence. Additional treatment for stress urinary incontinence (SUI) includes anti-incontinence surgery, tightening of sling, collagen injections, medication, behavioral treatment, or devices specifically for the treatment of SUI.
24 Month Cumulative Stress Specific Success Rates Computed From Kaplan Meier Time-to-event Analysis (Reported as % Success)
Time frame: Two years
Stress-specific success defined by composite measure including: no self-reported symptoms of stress incontinence reported on the Medical, Epidemiologic, and Social Aspects of Aging Project (MESA) questionnaire , negative results (no leakage) on a provocative stress test at standardized bladder volume and no retreatment for stress incontinence Additional treatment for SUI includes anti-incontinence surgery, tightening of sling, collagen injections, medication, behavioral treatment, or devices specifically for the treatment of SUI.
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 10 May 2013.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Background: PubMed 17437826Albo M, Wruck L, Baker J, Brubaker L, Chai T, Dandreo KJ, Diokno A, Goode P, Kraus S, Kusek JW, Lemack G, Lowder J, Steers W; Urinary Incontinence Treatment Network. The relationships among measures of incontinence severity in women undergoing surgery for stress urinary incontinence. J Urol. 2007 May;177(5):1810-4. doi: 10.1016/j.juro.2007.01.032.
- Background: PubMed 17517855Albo ME, Richter HE, Brubaker L, Norton P, Kraus SR, Zimmern PE, Chai TC, Zyczynski H, Diokno AC, Tennstedt S, Nager C, Lloyd LK, FitzGerald M, Lemack GE, Johnson HW, Leng W, Mallett V, Stoddard AM, Menefee S, Varner RE, Kenton K, Moalli P, Sirls L, Dandreo KJ, Kusek JW, Nyberg LM, Steers W; Urinary Incontinence Treatment Network. Burch colposuspension versus fascial sling to reduce urinary stress incontinence. N Engl J Med. 2007 May 24;356(21):2143-55. doi: 10.1056/NEJMoa070416. Epub 2007 May 21.
- Background: PubMed 19286143Brubaker L, Chiang S, Zyczynski H, Norton P, Kalinoski DL, Stoddard A, Kusek JW, Steers W; Urinary Incontinence Treatment Network. The impact of stress incontinence surgery on female sexual function. Am J Obstet Gynecol. 2009 May;200(5):562.e1-7. doi: 10.1016/j.ajog.2008.11.017. Epub 2009 Mar 16.
- Background: PubMed 19274758Brubaker L, Stoddard A, Richter H, Zimmern P, Moalli P, Kraus SR, Norton P, Lukacz E, Sirls L, Johnson H; Urinary Incontinence Treatment Network. Mixed incontinence: comparing definitions in women having stress incontinence surgery. Neurourol Urodyn. 2009;28(4):268-73. doi: 10.1002/nau.20698.
- Background: PubMed 20976815Burgio KL, Brubaker L, Richter HE, Wai CY, Litman HJ, France DB, Menefee SA, Sirls LT, Kraus SR, Johnson HW, Tennstedt SL. Patient satisfaction with stress incontinence surgery. Neurourol Urodyn. 2010 Nov;29(8):1403-9. doi: 10.1002/nau.20877.
- Background: PubMed 19296969Chai TC, Albo ME, Richter HE, Norton PA, Dandreo KJ, Kenton K, Lowder JL, Stoddard AM; Urinary Incontinence Treatment Network. Complications in women undergoing Burch colposuspension versus autologous rectus fascial sling for stress urinary incontinence. J Urol. 2009 May;181(5):2192-7. doi: 10.1016/j.juro.2009.01.019. Epub 2009 Mar 17.
- Background: PubMed 17684087FitzGerald MP, Burgio KL, Borello-France DF, Menefee SA, Schaffer J, Kraus S, Mallett VT, Xu Y; Urinary Incontinence Treatment Network. Pelvic-floor strength in women with incontinence as assessed by the brink scale. Phys Ther. 2007 Oct;87(10):1316-24. doi: 10.2522/ptj.20060073. Epub 2007 Aug 7.
- Background: PubMed 19837421Kenton K, Richter H, Litman H, Lukacz E, Leng W, Lemack G, Chai T, Arisco A, Tennstedt S, Steers W; Urinary Incontinence Treatment Network. Risk factors associated with urge incontinence after continence surgery. J Urol. 2009 Dec;182(6):2805-9. doi: 10.1016/j.juro.2009.08.032. Epub 2009 Oct 17.
- Background: PubMed 21153471Kirby AC, Nager CW, Litman HJ, FitzGerald MP, Kraus S, Norton P, Sirls L, Rickey L, Wilson T, Dandreo KJ, Shepherd JP, Zimmern P; Urinary Incontinence Treatment Network. Preoperative voiding detrusor pressures do not predict stress incontinence surgery outcomes. Int Urogynecol J. 2011 Jun;22(6):657-63. doi: 10.1007/s00192-010-1336-5. Epub 2010 Dec 10.
- Background: PubMed 17618773Kraus SR, Markland A, Chai TC, Stoddard A, FitzGerald MP, Leng W, Mallett V, Tennstedt SL; Urinary Incontinence Treatment Network. Race and ethnicity do not contribute to differences in preoperative urinary incontinence severity or symptom bother in women who undergo stress incontinence surgery. Am J Obstet Gynecol. 2007 Jul;197(1):92.e1-6. doi: 10.1016/j.ajog.2007.03.072.
- Background: PubMed 18804239Lemack GE, Krauss S, Litman H, FitzGerald MP, Chai T, Nager C, Sirls L, Zyczynski H, Baker J, Lloyd K, Steers WD; Urinary Incontinence Treatment Network. Normal preoperative urodynamic testing does not predict voiding dysfunction after Burch colposuspension versus pubovaginal sling. J Urol. 2008 Nov;180(5):2076-80. doi: 10.1016/j.juro.2008.07.027. Epub 2008 Sep 18.
- Background: PubMed 17304525Lemack GE, Xu Y, Brubaker L, Nager C, Chai T, Moalli P, Kraus SR, Kerr L, Sirls L, Stoddard A; Urinary Incontinence Treatment Network. Clinical and demographic factors associated with valsalva leak point pressure among women undergoing burch bladder neck suspension or autologous rectus fascial sling procedures. Neurourol Urodyn. 2007;26(3):392-6. doi: 10.1002/nau.20325.
- www.uitn.netLink provided by the sponsor.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
William D. Steers, M.D. study chair
University of Virginia
9 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2/3 study testing Burch Modified Tanagho and Autologous Fascia Sling in people with Urinary Incontinence, run by Carelon Research at 9 sites in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 10 May 2013. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 9 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this combined phase mean?
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 28 Sep 2012). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
24 Month Cumulative Success Rate Computed From Kaplan Meier Time-to-event Analysis (Reported as Percent Success). (time frame: Two years). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00064662, which also lists 39 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 10 May 2013.