Robert T Dess, Theresa P Devasia, Nima Aghdam, William C Jackson, Payal D Soni, Clayton P Smith, Amyre L Mitchell, Simeng Suy, Daniel A Hamstra, Shruti Jolly, Paul L Nguyen, Felix Y Feng, Matthew J Schipper, Ted A Skolarus, David C Miller, Daniela A Wittmann, Sean P Collins, Daniel E Spratt

To report sexual health-related quality of life outcomes and utilization and efficacy of sexual aids in a contemporary cohort of patients treated for localized prostate cancer. Between 2008 and 2013, 471 consecutive men with localized prostate cancer were treated on 2 institutional protocols (NCT01766492, NCT01618851) or on a prospective institutional registry with patient-reported health-related quality of life. All patients were treated with ultra-hypofractionated radiation therapy. Erectile function (EF) was defined as "firm enough for intercourse" with or without aids per Expanded Prostate Cancer Index Composite-26 (n = 222 at baseline); results apply to this cohort unless specifically noted. Sexual aid utilization and efficacy were patient reported. Multivariable analysis of EF was performed. Median follow-up was 60 months, median age was 67 years, and 70% had intermediate- or high-risk disease per National Comprehensive Cancer Network guidelines. At 24 and 60 months, questionnaire response rates were 86% and 67%, and EF was retained in 53% and 41%, respectively. Baseline sexual aid utilization was 37% (n = 82) and was associated with lower 24-month EF preservation on multivariable analysis (adjusted odds ratio 0.49, 95% confidence interval 0.26-0.92). By 60 months, 70% of men had tried aids. Of those who found aids helpful at baseline, 84% to 89% reported continued benefit at 24 to 60 months. Among aid-naïve patients, efficacy was 80% with first-time use within 12 months and 70% more than 12 months after radiation therapy (P = .02). Among men who developed erectile dysfunction but found sexual aids helpful, 25% were not current users at 60 months. One-third of men used sexual aids at baseline, which doubled by 5 years after radiation therapy. Self-reported efficacy was high and sustained. Despite significant declines in EF, a number of men reported helpfulness of aids but were not active users. Future study is required to understand drivers of aid utilization to optimize posttreatment sexual function.