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Search All Research Studies
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- Adverse Events (1)
- (-) Cancer (12)
- (-) Cancer: Prostate Cancer (12)
- Comparative Effectiveness (7)
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- Disparities (1)
- Evidence-Based Practice (10)
- Men's Health (5)
- Nutrition (1)
- (-) Outcomes (12)
- Patient-Centered Outcomes Research (10)
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- Sexual Health (1)
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AHRQ Research Studies
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Research Studies is a compilation of published research articles funded by AHRQ or authored by AHRQ researchers.
Results
1 to 12 of 12 Research Studies DisplayedAl Hussein Al Awamlh B, Wallis CJD, Penson DF
Functional outcomes after localized prostate cancer treatment.
The objective of this observational cohort study was to compare rates of adverse functional outcomes between specific treatments for localized prostate cancer. Researchers used data from five U.S. Surveillance, Epidemiology, and End Results Program registries. Participants were patients treated for localized prostate cancer in 2011-2012. The results indicated that radical prostatectomy was associated with worse urinary incontinence, but not with worse sexual function, at 10-year followup when compared with radiotherapy or surveillance. Among patients with unfavorable-prognosis disease, external beam radiotherapy with androgen deprivation therapy was associated with worse bowel and hormone function at 10-year followup compared with radical prostatectomy.
AHRQ-funded; HS019356; HS022640.
Citation: Al Hussein Al Awamlh B, Wallis CJD, Penson DF .
Functional outcomes after localized prostate cancer treatment.
JAMA 2024 Jan 23; 331(4):302-17. doi: 10.1001/jama.2023.26491.
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Keywords: Cancer: Prostate Cancer, Cancer, Outcomes, Patient-Centered Outcomes Research, Evidence-Based Practice
Gupta N, Patel HD, Taylor J
Systematic review of the impact of a plant-based diet on prostate cancer incidence and outcomes.
The objective of this study was to perform a systematic review of plant-based diets and prostate cancer. Findings showed that interventional studies displayed generally favorable results of lifestyle modifications incorporating a plant-based diet with prostate cancer outcomes as well as improvements in nutrition and general health. Further, observational studies demonstrated either a lower risk of prostate cancer or no significant difference.
AHRQ-funded; HS026120.
Citation: Gupta N, Patel HD, Taylor J .
Systematic review of the impact of a plant-based diet on prostate cancer incidence and outcomes.
Prostate Cancer Prostatic Dis 2022 Sep;25(3):444-52. doi: 10.1038/s41391-022-00553-2..
Keywords: Cancer: Prostate Cancer, Cancer, Evidence-Based Practice, Nutrition, Outcomes
Wallis CJD, Huang LC, Zhao Z
Association between pelvic nodal radiotherapy and patient-reported functional outcomes through 5 years among men undergoing external-beam radiotherapy for prostate cancer: an assessment of the Comparative Effectiveness Analysis of Surgery and Radiation (C
In this study, the investigators sought to compare functional outcomes for men receiving prostate and pelvic versus prostate-only radiotherapy, longitudinally over 5 years. The investigators concluded that there were no clinically important differences in disease-specific or general health-related quality of life with the addition of pelvic irradiation to prostate radiotherapy, supporting the use of pelvic radiotherapy when it may be of clinical benefit, such as men with increased risk of nodal involvement.
AHRQ-funded; HS022640; HS019356.
Citation: Wallis CJD, Huang LC, Zhao Z .
Association between pelvic nodal radiotherapy and patient-reported functional outcomes through 5 years among men undergoing external-beam radiotherapy for prostate cancer: an assessment of the Comparative Effectiveness Analysis of Surgery and Radiation (C
Urol Oncol 2022 Feb;40(2):56.e1-56.e8. doi: 10.1016/j.urolonc.2021.04.035..
Keywords: Cancer: Prostate Cancer, Cancer, Men's Health, Comparative Effectiveness, Outcomes, Evidence-Based Practice, Patient-Centered Outcomes Research, Quality of Life
Pasalic D, Barocas DA, Huang LC
Five-year outcomes from a prospective comparative effectiveness study evaluating external-beam radiotherapy with or without low-dose-rate brachytherapy boost for localized prostate cancer.
This retrospective cohort study’s objective was to determine if there were differences in treatment-related regret or survival between prostate cancer patients who received external-beam radiation therapy (EBRT) with or without a brachytherapy boost (EBRT-LDR), over a 5-year period. The cohort included 695 men who met inclusion criteria and received either EBRT (n=583) or EBRT-LDR (n=112). Men who received either treatment reported clinically worse urinary irritation and bowel function through 3 years but resolved after 5 years. Men who received EBRT-LDR continued to report moderate- to-big problems with urinary function bother and frequent urination at 5 years. There was no difference in treatment-related regret or survival between patients who received either treatment.
AHRQ-funded; HS019356; HS022640.
Citation: Pasalic D, Barocas DA, Huang LC .
Five-year outcomes from a prospective comparative effectiveness study evaluating external-beam radiotherapy with or without low-dose-rate brachytherapy boost for localized prostate cancer.
Cancer 2021 Jun 1;127(11):1912-25. doi: 10.1002/cncr.33388..
Keywords: Cancer: Prostate Cancer, Cancer, Comparative Effectiveness, Evidence-Based Practice, Outcomes, Patient-Centered Outcomes Research, Treatments
Huelster Huelster, Laviana AA, Joyce DD
Radiotherapy after radical prostatectomy: effect of timing of postprostatectomy radiation on functional outcomes.
This study sought to compare patient-reported functional outcomes after radical prostatectomy (RP) and postprostatectomy radiation as well as elucidate the timing of radiation to allow optimal recovery of function. Findings showed that, in men with localized prostate cancer, post-RP radiotherapy was associated with significantly worse sexual, urinary, and bowel function domain scores at 5 years compared to RP alone. Radiation delayed for approximately 24 months after RP may be optimal for preserving erectile function compared to radiation administered closer to the time of RP.
AHRQ-funded; HS019356; HS022640.
Citation: Huelster Huelster, Laviana AA, Joyce DD .
Radiotherapy after radical prostatectomy: effect of timing of postprostatectomy radiation on functional outcomes.
Urol Oncol 2020 Dec;38(12):930.e23-30.e32. doi: 10.1016/j.urolonc.2020.06.022..
Keywords: Cancer: Prostate Cancer, Cancer, Men's Health, Surgery, Patient-Centered Outcomes Research, Outcomes, Evidence-Based Practice, Comparative Effectiveness
Lange JM, Laviana AA, Penson DF
Prostate cancer mortality and metastasis under different biopsy frequencies in North American active surveillance cohorts.
This study projected the comparative benefits of different active surveillance (AS) schedules in men diagnosed with prostate cancer who had Gleason score (GS) </=6 disease and risk profiles similar to those in North American AS cohorts. Results showed that, among men diagnosed with GS </=6 prostate cancer, obtaining a biopsy every 3 or 4 years appeared to be an acceptable alternative to more frequent biopsies. Reducing surveillance intensity for those who have a low risk of progression reduces the number of biopsies while preserving the benefit of more frequent schedules.
AHRQ-funded; HS022990.
Citation: Lange JM, Laviana AA, Penson DF .
Prostate cancer mortality and metastasis under different biopsy frequencies in North American active surveillance cohorts.
Cancer 2020 Feb 1;126(3):583-92. doi: 10.1002/cncr.32557..
Keywords: Cancer: Prostate Cancer, Cancer, Patient-Centered Outcomes Research, Outcomes, Evidence-Based Practice, Men's Health
Hoffman KE, Penson DF, Zhao Z
Patient-reported outcomes through 5 years for active surveillance, surgery, brachytherapy, or external beam radiation with or without androgen deprivation therapy for localized prostate cancer.
This study compared different treatment of men with favorable-risk prostate cancer and those with unfavorable-risk disease and their functional outcomes 5 years post-treatment. Treatment options for favorable-risk disease include active surveillance, nerve-sparing prostatectomy, external beam radiation therapy (EBRT), or low-dose-rate brachytherapy with prostatectomy being the most common. Treatment options for men with unfavorable-risk disease is prostatectomy or EBRT with androgen deprivation therapy (ADT). The cohort analyzed included men diagnosed with prostate cancer in 2011 through 2012, accrued from 5 Surveillance, Epidemiology and End Results Program sites and a US prostate cancer registry, using surveys through September 2017. A total of 2005 men met inclusion criteria. For men with favorable-risk disease low-dose-rate brachytherapy was associated with worse urinary irritative, and sexual and bowel function at 1 year compared with active surveillance. Nerve-sparing prostatectomy was associated with worse urinary incontinence at 5 years and sexual function at 3 years compared with active surveillance. EBRT was not associated with clinically different function changes from active surveillance at any point during the 5 years. For men with unfavorable-risk disease, EBRT with ADT was associated with lower hormonal function at 6 months, bowel function at 1 year, but better sexual function and incontinence than prostatectomy.
AHRQ-funded; HS019356; HS022640.
Citation: Hoffman KE, Penson DF, Zhao Z .
Patient-reported outcomes through 5 years for active surveillance, surgery, brachytherapy, or external beam radiation with or without androgen deprivation therapy for localized prostate cancer.
JAMA 2020 Jan 14;323(2):149-63. doi: 10.1001/jama.2019.20675..
Keywords: Cancer: Prostate Cancer, Cancer, Comparative Effectiveness, Patient-Centered Outcomes Research, Outcomes, Evidence-Based Practice, Treatments, Men's Health, Adverse Events, Surgery
Mullins BT, Basak R, Broughman JR
Patient-reported sexual quality of life after different types of radical prostatectomy and radiotherapy: analysis of a population-based prospective cohort.
This study compares the effects of different types of radical prostatectomy and radiotherapy on sexual function. A population-based cohort of 835 men with newly diagnosed prostate cancer from 2011 through 2013 was recruited in collaboration with the Rapid Case Ascertainment system of the North Carolina Central Cancer Registry. They were enrolled prior to treatment and followed retrospectively using the validated Prostate Cancer Symptom Indices (PCSI) instrument. The sexual function scores were compared among patients who received the following treatment types: external-beam RT (EBRT), EBRT with androgen deprivation therapy (ADT), brachytherapy, nerve-sparing radical prostatectomy (RP), and non-nerve-sparing RP. The cohort was surveyed at 24 months post-therapy, and RT alone was found to result in the best preservation of sexual function with brachytherapy, RT with ADT, and nerve-sparing RP yielding similar outcomes. Patients treated with non-nerve-sparing RP experienced the worst sexual function outcome.
AHRQ-funded.
Citation: Mullins BT, Basak R, Broughman JR .
Patient-reported sexual quality of life after different types of radical prostatectomy and radiotherapy: analysis of a population-based prospective cohort.
Cancer 2019 Oct 15;125(20):3657-65. doi: 10.1002/cncr.32288..
Keywords: Quality of Life, Sexual Health, Surgery, Treatments, Comparative Effectiveness, Patient-Centered Outcomes Research, Outcomes, Cancer: Prostate Cancer, Cancer, Evidence-Based Practice
Gordon BE, Basak R, Carpenter WR
Factors influencing prostate cancer treatment decisions for African American and white men.
This prospective, population-based cohort study examined some possible reasons for mortality outcome differences for prostate cancer between African American (AA) and white patients. A cohort of 1170 men with nonmetastatic prostate cancer were enrolled from 2011 to 2013 before treatment in North Carolina. Participants were asked to rate their aggressiveness of their cancer, and also the importance of 10 factors their treatment decision-making process. Among low-risk patients, there was no difference in perception of their cancer as “not very aggressive”. Among high-risk patients, 54% of AA patients considered their cancer to be “not very aggressive” while only 24% of white patients did. For AA patients, cost, treatment time, and recovery time were considered very important more than white patients.
AHRQ-funded.
Citation: Gordon BE, Basak R, Carpenter WR .
Factors influencing prostate cancer treatment decisions for African American and white men.
Cancer 2019 May 15;125(10):1693-700. doi: 10.1002/cncr.31932..
Keywords: Decision Making, Cancer, Cancer: Prostate Cancer, Disparities, Men's Health, Outcomes, Patient-Centered Outcomes Research, Racial and Ethnic Minorities
Schmidt B, Eapen RS, Cowan JE
Practice patterns of primary EBRT with and without ADT in prostate cancer treatment.
This study investigated usage of external-beam radiation therapy (EBRT), with or without neoadjuvant androgen deprivation therapy (ADT), using data from a community-based prospective disease registry (CaPSURE). Data on 1337 men diagnosed between 1990 and 2014 with localized disease who received EBRT as primary treatment was compared. The authors conclude that use of ADT in conjunction with primary EBRT has increased in frequency and duration since 1990, and that men who received ADT have higher risk characteristics than those who receive EBRT alone.
AHRQ-funded; HS019356.
Citation: Schmidt B, Eapen RS, Cowan JE .
Practice patterns of primary EBRT with and without ADT in prostate cancer treatment.
Prostate Cancer Prostatic Dis 2019 Mar;22(1):117-24. doi: 10.1038/s41391-018-0084-3..
Keywords: Cancer: Prostate Cancer, Cancer, Patient-Centered Outcomes Research, Practice Patterns, Evidence-Based Practice, Comparative Effectiveness, Outcomes, Treatments
Tyson MD, Koyama T, Lee D
Effect of prostate cancer severity on functional outcomes after localized treatment: comparative effectiveness analysis of surgery and radiation study results.
The purpose of this study was to determine whether differences in predicted function over time between radical prostatectomy (RP) or external beam radiotherapy (EBRT) for localized cancer varied by risk group. Patient-reported, disease-specific function was measured using the Expanded Prostate Index Composite and predicted function was estimated using regression models, compared by disease risk. The study found that sexual function was similar between surgery and radiation for patients with high-risk disease, and the authors conclude that high-risk patients undergoing radiation therapy should be counseled that their sexual function may not be as good as low-risk patients also undergoing radiation.
AHRQ-funded; HS019356; HS022640.
Citation: Tyson MD, Koyama T, Lee D .
Effect of prostate cancer severity on functional outcomes after localized treatment: comparative effectiveness analysis of surgery and radiation study results.
Eur Urol 2018 Jul;74(1):26-33. doi: 10.1016/j.eururo.2018.02.012..
Keywords: Cancer: Prostate Cancer, Cancer, Comparative Effectiveness, Treatments, Surgery, Patient-Centered Outcomes Research, Outcomes, Evidence-Based Practice
Gilbert SM, Dunn RL, Wittmann D
Quality of life and satisfaction among prostate cancer patients followed in a dedicated survivorship clinic.
The researchers integrated quality of lifer (QOL) assessments into a prostate cancer survivorship clinic and compared recovery and satisfaction among men managed in the survivorship clinic with those followed with more routine care. They concluded that patient QOL and satisfaction were higher among men managed in a survivorship program.
AHRQ-funded; HS020927.
Citation: Gilbert SM, Dunn RL, Wittmann D .
Quality of life and satisfaction among prostate cancer patients followed in a dedicated survivorship clinic.
Cancer 2015 May 1;121(9):1484-91. doi: 10.1002/cncr.29215..
Keywords: Cancer: Prostate Cancer, Quality of Life, Outcomes, Cancer