Evaluation of the Reproducibility of MR Elastography Measurements of the Lumbar Back Muscles.

BACKGROUND: MR elastography (MRE) may provide quantitative imaging biomarkers of lumbar back muscles (LBMs), complementing MRI in spinal diseases by assessing muscle mechanical properties. However, reproducibility analyses for MRE of LBM are lacking. PURPOSE: To assess technical failure, within-day and inter-day reproducibility, robustness with the excitation source positioning, and inter-observer agreement of MRE of muscles. STUDY TYPE: Prospective. SUBJECTS: Seventeen healthy subjects (mean age 28 ± 4 years; 11 females). FIELD STRENGTH/SEQUENCE: 1.5 T, gradient-echo MRE, T1-weighted turbo spin echo. ASSESSMENT: The pneumatic driver was centered at L3 level. Four MRE were performed during two visits, 2-4 weeks apart, each consisting of two MRE with less than 10 minutes inter-scan interval. At Visit 1, after the first MRE, the coil and driver were removed, then reinstalled. The MRE was repeated. At Visit 2, following the first MRE, only the driver was moved down 5 cm. The MRE was repeated. Two radiologists segmented the multifidus and erector spinae muscles. STATISTICAL TESTS: Paired t-test, analysis of variance, intraclass correlation coefficients (ICCs). P-values <0.05 were considered statistically significant. RESULTS: Mean stiffness of LBM ranged from 1.44 to 1.60 kPa. Mean technical failure rate was 2.5%. Inter-observer agreement was excellent (ICC ranging from 0.82 [0.64-0.96] to 0.99 [0.98-0.99] in the multifidus, and from 0.85 [0.69-0.92] to 0.99 [0.97-0.99] in the erector spinae muscles). Within-day reproducibility was fair in the multifidus (ICC: 0.53 [0.47-0.77]) and good in the erector spinae muscles (ICC: 0.74 [0.48-0.88]). Reproducibility after moving the driver was excellent in both multifidus (ICC: 0.85 [0.69-0.93]) and erector spinae muscles (ICC: 0.84 [0.67-0.92]). Inter-day reproducibility was excellent in the multifidus (ICC: 0.76 [0.48-0.89]) and poor in the erector spinae muscles (ICC: 0.23 [-0.61 to 0.63]). DATA CONCLUSION: MRE of LBM provides measurements of stiffness with fair to excellent reproducibility and excellent inter-observer agreement. However, inter-day reproducibility in the multifidus muscles indicated that the herein used MRE protocol may not be optimal for this muscle. EVIDENCE LEVEL: 2 TECHNICAL EFFICACY: Stage 1.

Mental health consequences of military sexual trauma: results from a national survey in the French military.

BACKGROUND: Military sexual trauma (MST) is a major public health concern, given its prevalence and mental health sequelae. This phenomenon is particularly prevalent among women in the US military, although more cases involve men given their overrepresentation. Little is known about MST and its consequences in other military settings, including in Europe. METHODS: This study draws from a national survey in the French military, including 1268 servicemen and 232 servicewomen. We conducted bivariate and multivariate analysis, using simple and multinomial logistic regressions to evaluate the associations between different forms of MST (repeated sexual comments alone/one form of sexual oppression (coercion, repeated verbal unwanted attention or assault)/ several sexual stressors) and symptoms of depression and of positive post-traumatic stress disorder (PTSD) screening scores. RESULTS: Women were both more likely to experience MST and to experience more severe forms of MST than men. Women were also more likely than men to report mental health symptoms (31% versus 18% for symptoms of depression and 4.0% versus 1.8% for positive PTSD screening scores). Different forms of MST were associated with different levels of psychological distress. Women reporting repeated sexual comments alone had higher odds of depressive symptoms (OR=3.1 [1.7, 5.5]) relative to women with no MST. Likewise, the odds of depressive symptoms were 6.5 times higher among women and 8.0 times higher among men who experienced several sexual stressors relative to those who reported no MST. We also found higher relative risk of subthreshold PTSD screening scores among women reporting any form of sexual stressor, including sexual comments alone (RRR = 4.5 [2.8, 7.4]) and an elevenfold increase in the relative risk of positive PTSD screen scores (RRR = 11.3 [2.3, 55.6]) among women who experienced several sexual stressors relative to women with no MST. CONCLUSION: MST is associated with mental health distress among service members in the French military, especially for women. The heightened risk of MST coupled with psychological sequelae call for preventive programs to reduce MST and for screening programs to provide adequate psychological support.

Temporary contraindication of obese recipients in kidney transplantation: A new morphometric tool for decision support.

BACKGROUND: Morbid obesity, based on body mass index (BMI) and/or clinical examination, can be a temporary contraindication (TCI) of kidney transplantation. However, BMI alone does not evaluate the intra- or extra-peritoneal distribution of fatty tissue, and clinical examination alone is subjective. The objective was to evaluate the interest of morphometric criteria to ensure reproducible and consensual decision of TCI. METHODS: We retrospectively included patients with a BMI >30 transplanted or temporarily contraindicated because of their weight from 2012 to 2017. The following measurements were performed on CT scan sections using a semiautomatic Hounsfield density detection software: subcutaneous adipose tissue surface (SAT), visceral adipose tissue surface (VAT), vessel-to-skin distance (VSK), abdominal perimeter (AP), and psoas index. Performance of morphometric measures to predict TCI was assessed through ROC analysis. RESULTS: Ninety-seven patients were included: 76 kidney transplant recipients and 21 on the TCI list. The area under the curve (AUC, 95%CI) for the BMI model to predict TCI was 0.81 (0.72-0.90). A 5-variable model including BMI, VAT, VSK, AP, and age gave an AUC of 0.88 (0.78-0.98). CONCLUSIONS: Morphometric obesity parameters are associated with TCI decision-making for kidney transplantation: When combined with BMI in a "morphometric tool," they were predictive of a TCI decision.

Posture-related stiffness mapping of paraspinal muscles.

The paraspinal compartment acts as a bone-muscle composite beam of the spine. The elastic properties of the paraspinal muscles play a critical role in spine stabilization. These properties depend on the subjects' posture, and they may be drastically altered by low back pain. Supersonic shear wave elastography can be used to provide quantitative stiffness maps (elastograms), which characterize the elastic properties of the probed tissue. The aim of this study was to challenge shear wave elastography sensitivity to postural stiffness changes in healthy paraspinal muscles. The stiffness of the main paraspinal muscles (longissimus, iliocostalis, multifidus) was measured by shear wave elastography at the lumbosacral level (L3 and S1) for six static postures performed by volunteers. Passive postures (rest, passive flexion, passive extension) were performed in a first shear wave elastography session, and active postures (upright, bending forward, bending backward) with rest posture for reference were performed in a second session. Measurements were repeated three times for each posture. Sixteen healthy young adults were enrolled in the study. Non-parametric paired tests, multiple analyses of covariance, and intra-class correlations were implemented for analysis. Shear wave elastography showed good to excellent reliability, except in the multifidus at S1, during bending forward, and in the multifidus at L3, during bending backward. Yet, during bending forward, only poor quality was recorded for nine volunteers in the longissimus. Significant intra- and inter-muscular changes were observed with posture. Stiffness significantly increased for the upright position and bending forward with respect to the reference values recorded in passive postures. In conclusion, shear wave elastography allows reliable assessment of the stiffness of the paraspinal muscles except in the multifidus at S1 and longissimus, during bending forward, and in the multifidus at L3, during bending backward. It reveals a different biomechanical behaviour for the multifidus, the longissimus, and the iliocostalis.

Influence of thoracolumbar fascia stretching on lumbar back muscle stiffness: A supersonic shear wave elastography approach.

The lumbar paraspinal muscle compartment (PMC) is a stabilizing system of the spine whose efficiency depends on its elastic properties, which may be quantifiable by supersonic shear wave elastography (SWE). The thoracolumbar fascia (TLF) encapsulates the lumbar paraspinal muscles (LPM) and creates a PMC. Tensioning of the TLF via the stretching of the latissimus dorsi is supposed to increase stiffness within the PMC. The aims of this study were (1) to test the reliability of SWE in the multifidus and the erector spinae (ES) in prone and sited position; (2) to investigate the role of the tensioning of the pTLF, via stretching of the latissimus dorsi (LD), on LPM stiffness. Stiffness of ES and multifidus was measured using SWE at L3-L4 in procubitus and seated position in 15 participants. Stretching of LD was performed with arm elevation. Parametric paired tests, multiple analyses of variance, and intraclass correlation were used for statistical analysis. Reliability estimates were fair to excellent. Reliability was greater in ES than the multifidus, greater in seated position than during rest. Stiffness was greater in the ES than in multifidus, and in seated position than at rest. Tensioning of the TLF via LD stretching did not generate significant LPM stiffness changes. SWE is a reliable tool for assessing stiffness in the LPM. Reliability of SWE protocols is improved during seated position. Tensioning of the TLF via LD stretching did not influence LPM stiffness. Clin. Anat. 32:73-80, 2019. © 2018 Wiley Periodicals, Inc.

Prostate size, nocturia and the digital rectal examination: a cohort study of 30 500 men.

OBJECTIVES: To evaluate the utility of the digital rectal examination (DRE) in estimating prostate size and the association of DRE with nocturia in a population-based cohort. SUBJECTS AND METHODS: We identified all men randomized to the screening arm of the Prostate, Lung, Colorectal, and Ovarian Cancer Screening (PLCO) trial for whom DRE results were available. Men were excluded if they had a history of prostate surgery or incident prostate cancer. Prostate posterior surface area was derived from DRE sagittal and transverse estimates. Relationships between prostate posterior surface area, transrectal ultrasonography (TRUS), prostate-specific antigen (PSA) and nocturia were analysed using intraclass correlation coefficients (ICCs), Spearman's rank correlation and multivariable logistic regression. RESULTS: A total of 30 500 men met the inclusion criteria, with 103 275 screening visits containing paired DRE and PSA data. Digital rectal examination posterior surface area estimates had an ICC of 0.547 (95% CI 0.541-0.554) and were significantly yet modestly correlated with elevated PSA level (rs = 0.18, P < 0.001) and TRUS prostate volume (rs = 0.32, P < 0.001). Prostate posterior surface area was significantly associated with nocturia on multivariable analysis, but was not significant in stratified analysis of men with cardiovascular risk factors (hypertension, diabetes, high body mass index, stroke). In men without these risk factors, the highest quintile of DRE posterior surface area had 22% greater odds of nocturia than the lowest quintile (odds ratio 1.216, 95% CI 1.036-1.427). CONCLUSIONS: Digital rectal examination is a modestly accurate tool for measuring prostate volume. While DRE posterior surface area represents a statistically significant predictor of nocturia, the magnitude of effect suggests it has limited clinical utility for assessing this condition, particularly in the presence of cardiovascular risk factors.

The visceromotor and somatic afferent nerves of the penis.

INTRODUCTION: Innervation of the penis supports erectile and sensory functions. AIM: This article aims to study the efferent autonomic (visceromotor) and afferent somatic (sensory) nervous systems of the penis and to investigate how these systems relate to vascular pathways. METHODS: Penises obtained from five adult cadavers were studied via computer-assisted anatomic dissection (CAAD). MAIN OUTCOME MEASURES: The number of autonomic and somatic nerve fibers was compared using the Kruskal-Wallis test. RESULTS: Proximally, penile innervation was mainly somatic in the extra-albugineal sector and mainly autonomic in the intracavernosal sector. Distally, both sectors were almost exclusively supplied by somatic nerve fibers, except the intrapenile vascular anastomoses that accompanied both somatic and autonomic (nitrergic) fibers. From this point, the neural immunolabeling within perivascular nerve fibers was mixed (somatic labeling and autonomic labeling). Accessory afferent, extra-albugineal pathways supplied the outer layers of the penis. CONCLUSIONS: There is a major change in the functional type of innervation between the proximal and distal parts of the intracavernosal sector of the penis. In addition to the pelvis and the hilum of the penis, the intrapenile neurovascular routes are the third level where the efferent autonomic (visceromotor) and the afferent somatic (sensory) penile nerve fibers are close. Intrapenile neurovascular pathways define a proximal penile segment, which guarantees erectile rigidity, and a sensory distal segment.

Monitoring of erectile and urethral sphincter dysfunctions in a rat model mimicking radical prostatectomy damage.

INTRODUCTION: Animal models of urinary incontinence and erectile dysfunction following radical prostatectomy (RP) are lacking. AIMS: To develop an animal model of combined post-RP urethral sphincter and erectile dysfunctions, and noninvasive methods to assess erectile function (EF) and urinary sphincter function (USF) during prolonged follow-up. METHODS: In the main experiments, 60 male Sprague Dawley rats were randomized to a sham operation (N = 30) or electrocautery of both sides of the striated urethral sphincter (N = 30). EF and USF were evaluated preoperatively and on postoperative days 7, 15, 30, 60, and 90. Sphincter and penile tissue samples were evaluated histologically on days 7 (N = 10) and 30 (N = 10) to detect apoptosis (TUNEL assays) and fibrosis (Trichrome Masson staining). MAIN OUTCOME MEASURES: To assess EF, we measured systemic and penile blood flow using penile laser Doppler and penile rigidity using a durometer before and after apomorphine injection. USF was assessed based on the retrograde leak point pressure (LPPr). RESULTS: Apomorphine increased baseline Doppler flow by 180% (95% confidence interval, 156-202%) and penile hardness from 3.49 ± 0.5 to 7.16 ± 0.82 Shore A units but did not change systemic arterial flow. Mean LPPr was 76.8 ± 6.18 mm Hg at baseline and decreased by 50% after injury, with no response to apomorphine on day 7. EF and USF impairments persisted up to 90 days post injury. Histology showed penile apoptosis on day 7 and extensive urethral sphincter and penile fibrosis on day 30. Our data did not allow us to determine whether the impairment in erectile response to apomorphine preponderantly reflected arterial penile insufficiency or veno-occlusive dysfunction. CONCLUSION: Electrocautery of the striated urethral sphincter caused severe and lasting impairment of EF and USF that could be monitored repeatedly using minimally invasive methods. This new animal model may hold potential for developing new treatments designed to correct post-RP impairments.

Surgical prevention and management of vascular complications of kidney transplantation.

The main surgical changes in kidney procurement, preparation, and transplantation procedures occurred 20 years ago and were undertaken despite the inability to design randomized studies. The objective was to assess the evolution of vascular complications after kidney transplantation in a setting of surgical preventive measures in a historical series. A monocentric series of 3129 consecutive kidney transplantations performed over 3 decades was reviewed. The occurrence of arterial or venous thromboses, stenoses, and aneurysms was analyzed in relation with kidney procurement, preparation, and transplantation techniques. Vascular complications occurred in 13.5% of the recipients with a mean 3-year decrease in kidney graft function. The transplantation of a right kidney without renal vein extension, multiple renal arteries, ex vivo vascular repairs, and end-to-end arterial anastomoses were the unfavorable surgical vascular factors. It was possible to manage Transplant Renal Artery Stenosis (TRAS) nonsurgically in 80% of the cases. The prevention of vascular complications begins from the time of organ procurement by skilled surgeons. The aims of organ preparation are to evaluate the vascular risk, select the organs, and to simplify the anatomical constraints of vascular implantations. The three surgical steps of kidney transplantation are determinant in postoperative vascular complications and the duration of graft function.

From sexual harassment to sexual assault: Prevalence and correlates of sexual trauma in the French military.

BACKGROUND: Sexual harassment (SH) is prevalent in military settings and dependent on the workplace environment. Few studies have investigated this issue in non-US military settings nor have examined how contextual and individual factors related to Military Sexual Trauma (MST) vary by gender. METHODS: This study draws on a national sexual survey in the French military including 1268 servicemen and 232 servicewomen. We examined four sexual stressors (repeated sexual comments, sexual coercion, repeated unwanted verbal sexual attention and sexual assault (SA)) and two combined measures of verbal SH (comments, unwanted attention) and MST (all forms). We conducted multivariate logistic regressions to identify contextual and individual factors related to these outcomes. RESULTS: 36.7% of women and 17.5% of men experienced MST in the last year and 12.6% and 3.5% reported SA. Factors associated with verbal SH differed from those related to SA. The odds of verbal SH were elevated among men who had sex with men (OR = 3.5) and among women officers (OR = 4.6) while the odds of SA were elevated among men less than 25 years (OR = 3.5) and women with less than a high school diploma (OR = 10.9). The odds of SH increased by 20% to 80% when men worked in units with higher female representation, higher prevalence of MST (sexual comments, or sexual assault, coercion, repeated unwanted attention) and lower acceptance of women in the miliatry. The odds of SA also increased by 70% among men working in units with higher female representation and higher prevalence of sexual oppression. The odds of SA against women were particular high (OR = 5.7) in units with a high prevalence of sexual assault, coercion, or repeated unwanted attention. CONCLUSION: MST is common in the French military, with women experiencing more severe forms than men. Our resuls call for programmatic action to reduce workplace factors related to verbal SH and SA in the French military.

What Is the Most Effective Treatment for Nocturia or Nocturnal Incontinence in Adult Women?

CONTEXT: Nocturia is a prevalent symptom with varied aetiology and no consensus on treatment options. OBJECTIVE: We systematically reviewed evidence comparing the benefits and harms of various treatment options for nocturia or nocturnal incontinence in women. EVIDENCE ACQUISITION: Literature search was performed using Embase, Medline, and Cochrane databases (from 1 January 1946 to 26 September 2017), following the methods detailed in the Cochrane Handbook. The protocol was registered with PROSPERO. Certainty of evidence was assessed with the Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach. EVIDENCE SYNTHESIS: The literature search identified 3573 citations, of which 11 full-text articles were included. Three studies on desmopressin and four on antimuscarinics provided evidence of improving nocturia symptoms. Four studies on behavioural treatment provided limited evidence and controversial results. One study on oestrogen did not prove the benefit of any mode of administration, and one small study on functional magnetic stimulation provided some evidence of effectiveness in nocturia. One randomised controlled trial (RCT; 141 participants) reported a statistically significant difference between the desmopressin and placebo groups (desmopressin patients experienced 0.75 [95% confidence interval {CI} 0.47-1.03] nocturia episodes less than those experience by the placebo group; certainty of evidence = low). The only RCT on antimuscarinics in women with nocturia reported that oxybutynin reduced the number of nocturia episodes by 0.3 (95% CI -0.02 to 0.62) versus placebo. In one RCT comparing tolterodine with the combination of tolterodine with behavioural therapy, there was significant change from baseline nocturnal incontinence episodes in both groups. CONCLUSIONS: There is some evidence that desmopressin and antimuscarinics are effective treatment options for nocturia; however, there is very limited evidence for other treatment options. The findings should be interpreted with caution as there were some methodological flaws in the included studies, particularly outcome heterogeneity. PATIENT SUMMARY: This review identified several medical treatments for nocturia in women, such as desmopressin and antimuscarinics, which appear to improve the severity of the condition.

Validation of MRI quantitative susceptibility mapping of superparamagnetic iron oxide nanoparticles for hyperthermia applications in live subjects.

The use of magnetic fluid hyperthermia (MFH) for cancer therapy has shown promise but lacks suitable methods for quantifying exogenous irons such as superparamagnetic iron oxide (SPIO) nanoparticles as a source of heat generation under an alternating magnetic field (AMF). Application of quantitative susceptibility mapping (QSM) technique to prediction of SPIO in preclinical models has been challenging due to a large variation of susceptibility values, chemical shift from tissue fat, and noisier data arising from the higher resolution required to visualize the anatomy of small animals. In this study, we developed a robust QSM for the SPIO ferumoxytol in live mice to examine its potential application in MFH for cancer therapy. We demonstrated that QSM was able to simultaneously detect high level ferumoxytol accumulation in the liver and low level localization near the periphery of tumors. Detection of ferumoxytol distribution in the body by QSM, however, required imaging prior to and post ferumoxytol injection to discriminate exogenous iron susceptibility from other endogenous sources. Intratumoral injection of ferumoxytol combined with AMF produced a ferumoxytol-dose dependent tumor killing. Histology of tumor sections corroborated QSM visualization of ferumoxytol distribution near the tumor periphery, and confirmed the spatial correlation of cell death with ferumoxytol distribution. Due to the dissipation of SPIOs from the injection site, quantitative mapping of SPIO distribution will aid in estimating a change in temperature in tissues, thereby maximizing MFH effects on tumors and minimizing side-effects by avoiding unwanted tissue heating.

EAU Guidelines on Assessment and Nonsurgical Management of Urinary Incontinence.

CONTEXT: The European Association of Urology guidelines on urinary incontinence (UI) have been updated in cyclical fashion with successive major chapters being revised each year. The sections on assessment, diagnosis, and nonsurgical treatment have been updated as of mid-2016. OBJECTIVE: We present a condensed version of the full guideline on assessment and nonsurgical management of UI, with the aim of improving accessibility and increasing their dissemination. EVIDENCE ACQUISITION: Our literature search was updated from the previous cut-off of July 2010 up to April 2016. Evidence synthesis was carried out by a pragmatic review of current systematic reviews and any newer subsequent high-quality studies, based on Population, Interevention, Comparator, and Outcome questions. Appraisal was conducted by an international panel of experts, working on a strictly nonprofit and voluntary basis, to develop concise evidence statements and action-based recommendations using modified Oxford and GRADE criteria. EVIDENCE SYNTHESIS: The guidelines include algorithms that summarise the suggested pathway for standard, uncomplicated patients with UI and are more useable in daily practice. The full version of the guideline is available at http://uroweb.org/guideline/urinary-incontinence/. CONCLUSIONS: These updated guidelines provide an evidence-based summary of the assessment and nonsurgical management of UI, together with a clear clinical algorithm and action-based recommendations. Although these guidelines are applicable to a standard patient, it must be remembered that therapy should always be tailored to individual patients' needs and circumstances. PATIENT SUMMARY: Urinary incontinence is a very common condition which negatively impacts patient's quality of life. Several types of incontinence exist and since the treatments will vary, it is important that the diagnostic evaluation establishes which type is present. The diagnosis should also identify patients who need rapid referral to an appropriate specialist. These guidelines aim to provide sensible and practical evidence-based guidance on the clinical problem of urinary incontinence.

Medical Treatment of Nocturia in Men with Lower Urinary Tract Symptoms: Systematic Review by the European Association of Urology Guidelines Panel for Male Lower Urinary Tract Symptoms.

CONTEXT: The treatment of nocturia is a key challenge due to the multi-factorial pathophysiology of the symptom and the disparate outcome measures used in research. OBJECTIVE: To assess and compare available therapy options for nocturia, in terms of symptom severity and quality of life. EVIDENCE ACQUISITION: Medical databases (Embase, Medline, Cochrane Systematic Reviews, Cochrane Central) were searched with no date restriction. Comparative studies were included which studied adult men with nocturia as the primary presentation and lower urinary tract symptoms including nocturia or nocturnal polyuria. Outcomes were symptom severity, quality of life, and harms. EVIDENCE SYNTHESIS: We identified 44 articles. Antidiuretic therapy using dose titration was more effective than placebo in relation to nocturnal voiding frequency and duration of undisturbed sleep; baseline serum sodium is a key selection criterion. Screening for hyponatremia (< 130 mmol/l) must be undertaken at baseline, after initiation or dose titration, and during treatment. Medications to treat lower urinary tract dysfunction (α-1 adrenergic antagonists, 5-α reductase inhibitors, phosphodiesterase type 5inhibitor, antimuscarinics, beta-3 agonist, and phytotherapy) were generally not significantly better than placebo in short-term use. Benefits with combination therapies were not consistently observed. Other medications (diuretics, agents to promote sleep, nonsteroidal anti-inflammatories) were sometimes associated with response or quality of life improvement. The recommendations of the Guideline Panel are presented. CONCLUSIONS: Issues of trial design make therapy of nocturia a challenging topic. The range of contributory factors relevant in nocturia makes it desirable to identify predictors of response to guide therapy. Consistent responses were reported for titrated antidiuretic therapy. For other therapies, responses were less certain, and potentially of limited clinical benefit. PATIENT SUMMARY: This review provides an overview of the current drug treatments of nocturia, which is the need to wake at night to pass urine. The symptom can be caused by several different medical conditions, and measuring its severity and impact varies in separate research studies. No single treatment deals with the symptom in all contexts, and careful assessment is essential to make suitable treatment selection.

Prevalence of Female Urinary Incontinence in the General Population According to Different Definitions and Study Designs.

BACKGROUND: Estimates of the prevalence of female urinary incontinence (UI) vary widely. OBJECTIVE: To estimate UI prevalence among women in France using data from five national surveys and analyse prevalence differences among the surveys according to their design (representative sample or not, survey focused on UI or not) and UI definition (based on symptoms or disease perception). DESIGN, SETTING, AND PARTICIPANTS: Data came from two representative telephone surveys, Fecond (5017 women aged 15-49 yr) and Barometer (3089 women aged 40-85 yr), general and urinary postal surveys of the GAZEL cohort (3098 women aged 54-69 yr), and the web-based NutriNet survey (85,037 women aged 18-87 yr). OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS: Definitions of UI based on the International Conference on Incontinence Questionnaire UI short form (ICIQ-UI-SF) and on a list of health problems were considered. We compared age-adjusted prevalence rates among studies via logistic regression and generalised linear models. RESULTS AND LIMITATIONS: Overall, 13% of the women in Fecond, 24% in Barometer, 15% in the GAZEL general survey, 39% in the GAZEL urinary survey, and 1.5% in the NutriNet survey reported any UI. Prevalence rates in representative samples with the same UI definition (ICIQ-UI-SF) were concordant. UI prevalence in the representative samples was 17%. The estimated number of women in France with UI was 5.35 million (95% confidence interval [CI] 5.34-5.36 million) for any UI and 1.54 million (95% CI 1.53-1.55 million) for daily UI. For the GAZEL sample, UI prevalence was lower but UI severity was greater for responses to a questionnaire with the list-based UI definition rather than to a questionnaire with the ICIQ-UI-SF-based definition. In all surveys, information about UI was self-reported and was not validated by objective measurements. CONCLUSIONS: UI definitions and sampling strategies influence estimates of UI prevalence among women. Precise estimates of UI prevalence should be based on non-UI-focused surveys among representative samples and using a validated standardised symptom-based questionnaire. PATIENT SUMMARY: We looked at estimates of urinary incontinence (UI) prevalence in studies with different designs and different UI definitions in a large population of French women. We found that estimates varied with the definition and the design. We conclude that the most precise estimates of UI prevalence are obtained in studies of representative populations that are not focused on UI and use a validated international standard questionnaire with sufficient details to allow grading of UI severity. Most women reported rare urine leakages involving small amounts of urine with little impact on their quality of life.

The Effect of Urinary Incontinence on Health-related Quality of Life: Is It Similar in Men and Women?

OBJECTIVE: To compare the association between self-reported urinary incontinence (UI) and health-related quality of life (HRQoL) in men and women while taking chronic comorbidities into account, on the hypothesis that UI might negatively affect HRQoL differently in each sex. METHODS: In 2006, a total of 10,723 men (aged 57-67 years) and 3777 women (aged 52-67 years) participating in the GAZEL cohort (www.gazel.inserm.fr) completed a self-administered questionnaire including the Nottingham Health Profile to assess HRQoL. UI was defined as self-reported involuntary loss of urine in the past 12 months. Adjusted logistic regression models were fitted to estimate the association between impaired HRQoL and UI, taking age, chronic conditions, and other confounders into account. For each QoL dimension, we compared the strength of the associations between UI and HRQoL between the sexes by tests of interaction. RESULTS: Women were more likely than men to report both UI (13.9% vs 2.7%) and impaired HRQoL. UI was associated with impaired HRQoL in both sexes, mainly in the dimensions of energy (OR = 3.17 in men [95% CI 2.49-4.04] and 2.11 in women [1.75-2.54]), social isolation (OR = 2.29 in men [1.74-3.02] and 1.75 in women [1.44-2.12]), and physical mobility (OR = 2.05 in men [1.62-2.60] and 2.27 in women [1.88-2.74]). There were no significant interactions between the sexes after adjustment. CONCLUSION: UI was associated negatively with HRQoL in both sexes, mostly in the dimensions of energy, social isolation, and physical mobility. The association was similar in men and women after we took age, sociodemographic characteristics, and chronic diseases into account. The cross-sectional design of the analysis prevents any conclusion that UI induced an impairment of HRQoL, and no causal relation can be inferred.