Thomas W Gaither

Thomas W Gaither
University of California, Los Angeles | UCLA · Department of Urology

MD, MAS

About

117
Publications
21,863
Reads
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1,029
Citations
Citations since 2016
103 Research Items
985 Citations
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2016201720182019202020212022050100150200
Introduction
Thomas W Gaither currently works at the Department of Urology, University of California, Los Angeles. Thomas does research in urology and sexual medicine.
Additional affiliations
June 2018 - present
University of California, Los Angeles
Position
  • Urology Resident
March 2014 - present
University of California, San Francisco
Position
  • Research Assistant
August 2008 - May 2010
Indiana University Bloomington
Position
  • Research Assistant

Publications

Publications (117)
Article
Background: Erectile dysfunction (ED) after treatment for prostate cancer with radiotherapy (RT) is well known, and pooled estimates of ED after RT will provide more accurate patient education. Aim: To systematically evaluate the natural history of ED in men with previous erectile function after prostate RT and to determine clinical factors asso...
Article
Full-text available
Purpose: Studies of surgical complications from penile inversion vaginoplasty are limited due to small sample sizes. We describe postoperative complications after penile inversion vaginoplasty and evaluate age, BMI, and years on hormone replacement therapy (HRT) as risk factors for complications. Materials and methods: We conducted a retrospecti...
Article
Introduction: Workforce disparities in medicine have been well documented. Early medical school exposures have been shown to highly influence career choice. We hypothesized that gender and racial disparities exist in early medical school exposures to urology. Methods: We surveyed urology residency applicants who interviewed at our institution from...
Article
Purpose Various disparities exist in HIV transmission among men who have sex with men (MSM). Pre-exposure prophylaxis (PrEP) has been shown to decrease the acquisition of HIV, but there is variation in uptake within the MSM population. We aim to characterise PrEP use and correlates of self-reported PrEP use in a large national sample of urban MSM i...
Article
Objectives To determine the predictive value of voiding efficiency on acute urinary retention after discharge from BPH surgery. Materials and methods We performed a prospective observational cohort study of three surgeons’ practices from 2019 to present. All men included underwent trial of void on postoperative day 1 after transurethral resection...
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Full-text available
Purpose: The safety label for collagenase Clostridium histolyticum was updated to include post-injection acute lower back pain as an adverse event observed with intralesional therapy for Peyronie's disease. Incidence and causality are unknown. We assessed frequencies and temporal associations for this adverse event in a large cohort. Materials an...
Article
Objective To compare health-related quality of life in men who underwent surgical vs. medical castration for metastatic prostate cancer. Methods We analyzed data from a prospective cohort of men enrolled in a statewide public health program that provides care for prostate cancer among low-income, uninsured men from 2001 to 2020. Outcome measures i...
Preprint
BACKGROUND Geosocial networking (GSN) apps play a pivotal role in catalyzing sexual partnering, especially among men who have sex with men (MSM). OBJECTIVE To quantify the United States (US) prevalence and disparities in disclosure of pre-exposure prophylaxis (PrEP) use and COVID-19 vaccination among GSN app users, mostly MSM. METHODS We randomly...
Article
Background: Geosocial networking (GSN) apps play a pivotal role in catalyzing sexual partnering, especially among men who have sex with men (MSM). Objective: To quantify the United States (US) prevalence and disparities in disclosure of pre-exposure prophylaxis (PrEP) use and COVID-19 vaccination among GSN app users, mostly MSM. Methods: Onlin...
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Introduction Implications of lubricant use in men having sex with men (MSM) are poorly characterized, particularly associations with sexual behavior and rectal sexually transmitted infection (STI) risk. Aim We sought to clarify covariates associated with lubrication type including differing sexual preferences and rectal STI prevalence. Methods Pr...
Article
Background Transgender and gender-diverse individuals are particularly vulnerable to healthcare discrimination and related health sequelae.Objective To demonstrate diversity in demographics and explore variance in needs at the time of intake among patients seeking care at a large, urban gender health program.DesignWe present summary statistics of p...
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PurposeAlterations in the urinary microbiome have been associated with urological diseases. The microbiome of patients with urethral stricture disease (USD) remains unknown. Our objective is to examine the microbiome of USD with a focus on inflammatory USD caused by lichen sclerosus (LS).Methods We collected mid-stream urine samples from men with L...
Article
Background: Peyronie's disease (PD) can be subdivided into acute and chronic phases. Intralesional collagenase Clostridium histolyticum has been shown to improve curvature in the chronic phase. Initial clinical trials excluded patients in the acute phase from treatment. Recent studies show comparable results among men in the acute phase. The defin...
Article
Background: Pubic hair grooming has been correlated with a self-reported history of sexually transmitted infections (STI). We examined this relationship further in a cross-sectional survey of patients attending an urban STI clinic in San Francisco in 2018. Methods: Pubic hair grooming practices and detailed sexual histories were obtained. STIs w...
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Purpose To assess the functional Queryoutcome of patients with cystoscopic recurrence of stricture post-urethroplasty and to evaluate the role of cystoscopy as initial screening tool to predict future failure. Methods Cases with cystoscopy data after anterior urethroplasty in a multi-institutional database were retrospectively studied. Based on cy...
Article
Objective: To estimate the cost-effectiveness of routine, screening renal bladder ultrasound (RBUS) for children age 2-24 months after a first febrile urinary tract infection (UTI), as recommended by the American Academy of Pediatrics. Study design: We developed a decision analytic model that simulates a population of children after a first febr...
Article
Background: Continuous antimicrobial prophylaxis (prophylaxis) is associated with a reduction in recurrent urinary tract infections in children with vesicoureteral reflux. However, adherence to daily medications has been shown to be poor. Objective: To determine patient/caregiver factors associated with non-adherence and to determine whether adh...
Article
Background: Sexual dysfunction is common among adults and takes a toll on quality of life for both men and women. Aim: To determine whether higher levels of weekly cardiovascular exercise are protective against self-reported sexual dysfunction among men and women. Methods: We conducted an international online, cross-sectional survey of physica...
Article
Objective: To evaluate the incidence and durability of compensatory hypertrophy with solitary kidneys in the setting of those with multicystic dysplastic kidney (MCDK) or Wilms tumor (WT) status postnephrectomy. Patients and methods: We conducted a retrospective cohort study of patients with MCDK and WT. MCDK patients were verified by sonographi...
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Purpose: Perineal urethrostomy is a viable option for many complex urethral strictures. However, to our knowledge no comparison with anterior urethroplasty regarding patient reported outcome measures has been published. We compared these groups using a large multi-institution database. Materials and methods: We performed a retrospective study of...
Article
Purpose: U.S. minority groups have been historically underrepresented in phase III prostate cancer clinical trials despite often having higher risk disease. This study analyzes enrollment trends of major U.S. racial/ethnic groups in phase III prostate cancer trials between 2003-2014 compared to Surveillance, Epidemiology, and End Results (SEER) in...
Article
Background: The association between obesity and urinary dysfunction in childhood has been described, albeit through retrospective analysis, making temporal relationships difficult to establish. Objective: The objective of this study was to determine risk factors for significant weight gain in children at risk for recurrent urinary tract infectio...
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Background To compare the current racial/ethnic characteristics of practicing urologists to the U.S. population by American Urological Association (AUA) census geographic region. Methods We compared urologist demographics from the 2014 AUA census to U.S. census data. Underrepresented in medicine (URM) status was defined as African-American (AA) or...
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Background: Genital numbness and erectile dysfunction in cyclists may result from repeated perineal impacts on the bicycle saddle (micro-trauma) that occur during routine cycling. Aim: To evaluate the relationship between oscillation forces and perineal pressures among cyclists in a simulated laboratory setting. Methods: Participants were fit...
Article
Objective To assess the association of genital numbness and erectile dysfunction in male cyclists. Subjects and methods Cyclists were recruited through Facebook advertisements and outreach to sporting clubs. This is a secondary analysis of a larger epidemiologic population‐based study that examined sexual and urinary wellness in athletes. We queri...
Article
BACKGROUND: Female genital self-image is an important aspect of psychosocial and sexual health. The Female Genital Self-Image Scale (FGSIS) is a validated instrument that has been used to characterize women's level of genital dissatisfaction. AIM: In this report, we assess genital dissatisfaction using the FGSIS in a nationally representative samp...
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Introduction Emergency department visits and hospital admissions resulting from adult bicycle trauma have increased dramatically. Annual medical costs and work losses of these incidents last were estimated for 2005 and quality-of-life losses for 2000. Methods We estimated costs associated with adult bicycle injuries in the USA using 1997–2013 non-...
Article
Objective: To further explore the issue of work parity between men and women urologists in the context of demographics, practice characteristics, subspecialty affiliation, and planned retirement. Methods: We analyzed data from the 2014 American Urological Association (AUA) census, which is a specialty wide survey distributed to the entire urolog...
Article
Online reviews are an increasingly popular tool for patients to evaluate and choose physicians.¹ Although the accuracy, utility, and meaning of online reviews are debated by physicians, the patient perspective is a valued component of the physician-patient relationship and is likely to increase in importance.²,3 Reliable online reviews provide guid...
Article
Objective: To determine if traumatic renal injuries and/or computed tomography (CT) findings are predictive of HTN development following injury. Methods: A retrospective review of a renal trauma database was performed from 1995-2015. Renal injuries were graded by the American Association for the Surgery of Trauma system, with high grade defined...
Article
Background: Bicycle riding has become an increasingly popular mode of transportation and exercise, especially among women, and previous studies have demonstrated a relationship between cycling and sexual dysfunction, albeit using non-validated questionnaires. Aim: We aimed to explore the relationship between cycling and sexual and urinary dysfun...
Article
Introduction Asymptomatic post-renal transplant reflux is common but only 5–10% patients are diagnosed with vesico-ureteral reflux in the setting of post-transplant febrile urinary tract infections, requiring redo ureteroneocystostomy (redo-UNC). Here we report the renal function outcomes of 37 such patients, stratified by lower urinary tract (LUT)...
Article
Introduction and objectives: To describe the epidemiology of genital burns in the U.S. and investigate the underlying etiology. Methods: The National Electronic Injury Surveillance System database was queried for individuals who sustained genital burns from 2000 to 2016. We collected data on age, gender, injury diagnosis, disposition, and causat...
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Introduction: Patients undergo pediatric urologic surgery as infants and young children Objective: The purpose of the study is to evaluate the evolution of surgical scars over several years in order to inform parents and surgeons on the true cosmetic impact of pediatric surgery and evaluate patient scar satisfaction. Study Design: This was a cro...
Article
Background: We performed a systematic review and meta-analysis to determine the prevalence and predictors of urethral stricture development post radiation therapy (RT) for prostate cancer (PCa). Methods: Published articles in PubMed/Medline, Cochrane, and Embase databases from January 2000 to April 2016 were queried. Inclusion criteria were any...
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Background: Patients with vesicoureteral reflux and concomitant bladder and bowel dysfunction (BBD) are at high risk for febrile urinary tract infections. Risk factors for BBD have been identified in retrospective studies without validated measures. Methods: We conducted a secondary analysis of the Randomized Intervention for Children with Vesic...
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Objectives: To understand how prioritization of treatment attributes and treatment choice varies by patient characteristics, we sought to specifically determine how demographic variables affect patient treatment preference. Patients and methods: Male patients with urethral stricture disease participated in a choice-based conjoint (CBC) analysis...
Article
Full-text available
Male genital satisfaction is an important aspect of psychosocial and sexual health. The Index of Male Genital Image (IMGI) is a new scale that measures perceptions of male genitalia. We aim to characterize genital satisfaction using the IMGI and correlate dissatisfaction with sexual activity. We conducted a nationally representative survey of non-i...
Article
Introduction: The gender demographics within urology are changing as more women are entering the workforce. Since research productivity strongly influence career advancement, we aim to characterize gender differences in scholarly productivity and promotions in a cohort of graduated academic urologists. Materials and methods: Urologists who gradu...
Article
Purpose: To explore the relation between cycling and urinary and sexual function in a large, multinational sample of men. Materials and methods: Cyclists were recruited to complete a survey through Facebook advertisements and outreach to sporting clubs. Swimmers and runners were recruited as a comparison group. Cyclists were categorized into low...
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Full-text available
Background: Efforts have been made to reduce computed tomography (CT) scans in children with blunt abdominal injury. CT scans may be over utilized in pediatric patients with renal trauma. Methods: We performed a retrospective chart review of all renal trauma cases (<18 years old) in two urban trauma centers from 2002-2016. We collected patient d...
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Background Web-based physician ratings systems are a popular tool to help patients evaluate physicians. Websites help patients find information regarding physician licensure, office hours, and disciplinary records along with ratings and reviews. Whether higher patient ratings are associated with higher quality of care is unclear. Objective The aim...
Article
Importance Pubic hair grooming is a common practice that can lead to injury and morbidity. Objective To identify demographic and behavioral risk factors associated with pubic hair grooming–related injuries to characterize individuals with high risk of injury and develop recommendations for safe grooming practices. Design, Setting, and Participant...
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Full-text available
PurposeTo characterize anterior urinary fistulae following radiotherapy for prostate cancer. Methods Over 10 years, 31 men were identified to have an anterior urinary fistula. A retrospective database was created to evaluate patient demographics, presentation, diagnostic procedures, operative interventions, outcomes, and complications. Comparisons...
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Full-text available
Purpose of Review Urinary diversion (UD) remains the last option for improving quality of life in patients with treatment-refractory urinary incontinence (UI) or voiding dysfunction after cancer treatment. We aim to critically review the utility of UD for UI and voiding dysfunction in patients previously treated for malignancy. Recent Findings UD...