Parity is not associated with urgency with or without urinary incontinence

Prevalence of urinary incontinence in female CrossFit athletes: a systematic review with meta-analysis

INTRODUCTION AND HYPOTHESIS

Studies on the prevalence of urinary incontinence (UI) among CrossFit practitioners are on the rise. This systematic review with meta-analysis was aimed at determining the prevalence of UI among CrossFit practitioners.

METHODS

A systematic review of the literature was performed by searching MEDLINE/PubMed, Scopus, and SPORTDiscus through January 2021. The search strategy included the keywords CrossFit, urine incontinence, exercise, high impact and pelvic floor dysfunction. The inclusion criterion was any study with a sample of CrossFit practitioners and results separated from the other fitness modalities analysed. The subjects were women with no restriction of age, parity, experience or frequency of training. Quality assessment of the studies included was conducted using the Oxford Centre of Evidence-Based Medicine scale and the Newcastle-Ottawa Scale (NOS) adapted for cross-sectional studies.

RESULTS

Thirteen studies (6 comparative and 7 non-comparative) were included for the systematic review, all using a cross-sectional design. The level of evidence was 4, with their quality ranging from poor (n = 10) to fair (n = 3). A total of 4,823 women aged 18 to 71 were included, 91.0% participated in CrossFit, and 1,637 presented UI, which indicates a prevalence of 44.5%. Also, 55.3% and 40.7% presented mild or moderate UI respectively. Stress UI was the most common type reported (81.2%).

CONCLUSIONS

The factors that increased the likelihood of UI were age, body mass index and parity. Exercises based on jumps were commonly associated with urine leakage. CrossFit practitioners presented higher UI than control groups.

Association between parity and the risk for urinary incontinence in women: A meta-analysis of case-control and cohort studies

Urinary incontinence (UI) is a common complaint for adult female. Cross-sectional studies suggested parity may link with UI, but the association between them was not well-established. We conducted a meta-analysis to investigate the association between parity and UI.Medline and Embase were searched for eligible case-control and cohort studies about parity and UI. Two authors screened the literature and extracted the data independently. Odds ratio (OR) was used as the measure of the effect of parity on UI. We pooled the ORs of different number of parity by a random-effect model. Subgroup analysis was conducted by a subtype of UI. Sensitivity analysis was conducted to see whether the results were stable.Thirteen studies (8 cohorts and 5 case-controls) were included in our meta-analysis, with a total of 74,883 adult females. Our meta-analysis showed that compared with nulliparity, ORs of women with 1, 2, and ≥3 parity were 1.43 [95% confidence interval (95% CI): 0.90-2.28; I = 81.4%; n = 4], 1.50 (95% CI: 1.02-2.20; I = 82.5%; n = 4), and 1.58 (95% CI: 1.22-2.03; I = 70.1%; n = 7) compared with nulliparity. The OR for any multiparity to nulliparity was 1.68 (95% CI: 1.39-2.03; I = 0%; n = 4). Subgroup analysis showed that parity was associated with an increased risk of stress UI (OR = 2.32, 95% CI: 1.41-3.81; I = 0%; n = 2; 1 compared with null parity) but not urgent UI; However, the definition of parity varies across studies and studies defined parity as delivery times showed higher pooled OR than those not. Sensitivity analysis showed our results were stable.Current evidence suggested that parity was associated with an increased risk of overall and stress UI but not urgency UI, though the definition of parity may differ. Higher parity may have a more significant effect on overall UI. Standardized definition of parity is needed.

Does transition of urinary incontinence from one subtype to another represent progression of the disease?

INTRODUCTION AND HYPOTHESIS

Mixed urinary incontinence (UI) is, on average, more severe than urgency UI or stress UI. We tested the hypothesis that mixed UI is a more advanced stage of UI by comparing transition probabilities among women with stress, urgency, and mixed UI.

METHODS

We used data from the General Longitudinal Overactive Bladder Evaluation Study-UI, which included community-dwelling women, aged 40+ years, with UI at baseline. Study participants completed two or more consecutive bladder health surveys every 6 months for up to 4 years. Using sequential 6-month surveys, transition probabilities among UI subtypes were estimated using the Cox-proportional hazards model, with the expectation that probabilities from stress or urgency UI to mixed UI would be substantially greater than probabilities in the reverse direction.

RESULTS

Among 6,993 women 40+ years of age at baseline, the number (prevalence) of women with stress, urgency, and mixed UI was 481 (6.9%), 557 (8.0%), and 1488 (21.3%) respectively. Over a 4-year period, the transition probabilities from stress UI (34%) and urgency UI (27%) to mixed UI was significantly higher than probabilities from mixed to stress UI (6%) or to urgency UI (rate = 9%). The adjusted transition hazard ratio for stress UI and urgency UI was 2.06 (95% CI: 1.73-2.92) and 1.85 (95% CI: 1.63-2.57) respectively compared with mixed UI.

CONCLUSION

The substantially higher transition from stress UI and urgency UI to mixed UI supports the hypothesis that mixed UI might represent a more advanced stage of UI that may have implications for understanding disease progression.

Clinical epidemiological insights into urinary incontinence

INTRODUCTION AND HYPOTHESIS

Urinary incontinence (UI) is very common and heterogeneous among women with limited knowledge of progression or prognosis. Evidence based on clinical epidemiology can help to better understand the natural history of UI.

METHODS

We examine the challenges of UI definition and its subtypes, its impact on quality of life and health-seeking behavior. We review the proposed pathophysiology of UI subtypes and known risk factors as they relate to our current knowledge of the disease state. Finally, we emphasize the role of epidemiology in the process of acquiring new insight, improving knowledge, and translating this information into clinical practice.

RESULTS

Stress UI is most common overall, but mixed UI is most prevalent in older women. The three UI subtypes have some common risk factors, and others that are unique, but there remains a significant gap in our understanding of how they develop. Although the pathophysiology of stress UI is somewhat understood, urgency UI remains mostly idiopathic, whereas mixed UI is the least studied and most complex subtype. Moreover, there exists limited information on the progression of symptoms over time, and disproportionate UI health-seeking behavior. We identify areas of exploration (e.g., epigenetics, urinary microbiome), and offer new insights into a better understanding of the relationship among the UI subtypes and to develop an integrated construct of UI natural history.

CONCLUSION

Future epidemiological strategies using longitudinal study designs could play a pivotal role in better elucidating the controversies in UI natural history and the pathophysiology of its subtypes leading to improved clinical care.

Mixed Incontinence Masked as Stress Induced Urgency Urinary Incontinence

PURPOSE

We sought to understand variations in the expression and temporal relation of bladder control episodes among women with mixed urinary incontinence.

MATERIALS AND METHODS

A random sample of women 40 years old or older with mixed urinary incontinence on GLOBE-UI (General Longitudinal Overactive Bladder Evaluation-Urinary Incontinence) was recruited in a digital daily diary study using a smartphone application. When a bladder control event occurred, women were instructed to answer episode specific questions. Episodes were defined as urgency, and urinary incontinence with and urinary incontinence without urgency. Women and episodes were compared by the type of activity preceding each episode. Urinary incontinence episodes were further defined as stress urinary incontinence, urgency urinary incontinence, stress induced urgency urinary incontinence and other. The chi-square and Wilcoxon tests were used for categorical and continuous variables, respectively.

RESULTS

Of 40 women with a mean age of 65.5 years 35 provided complete 30-day diary data. Of the 950 bladder control episodes reported 25% were urgency only, 55% were urinary incontinence with urgency and 19% were urinary incontinence without urgency. Of the urinary incontinence episodes without urgency 82% occurred after a stress activity (eg coughing or sneezing). Notably, a stress activity also occurred just before 52.5% of the urgency urinary incontinence episodes (p <0.001). A total of 24 women (69%) reported at least 1 episode of stress induced urgency urinary incontinence, which was the most prevalent urinary incontinence subtype episode, followed by urgency urinary incontinence and stress urinary incontinence (29% vs 27% and 16%, respectively). The mean number of daily episodes was 1 or 2 across all groups.

CONCLUSIONS

Women with mixed urinary incontinence express a heterogeneous set of bladder control episodes with stress induced urgency urinary incontinence as the dominant type.

Clinical validation of the Bladder Health Survey for urinary incontinence in a population sample of women

INTRODUCTION AND HYPOTHESIS

Our aim was to clinically validate the Bladder Health Survey (BHS) for detecting urinary incontinence (UI) in population-based surveys.

METHODS

A random sample of women ≥40 years was recruited from primary care practices. We assessed the BHS content validity with an expert advisory board. Test-retest reliability of UI questions was measured. BHS UI definitions included noncases, active (more than three symptoms in the prior 6 months), inactive (past but no current symptoms), and incident (new onset over the past 2 years) cases. To assess criterion validity, we compared BHS diagnosis to an expert clinical diagnosis using structured history, pelvic exam, voiding diary, and urodynamics (if needed). Construct validity was assessed comparing the BHS UI score and case status to Sandvik's score.

RESULTS

Among 322 patients, the BHS identified 17 % as noncases, 70 % as active, 10 % as inactive, and 3 % as incident cases. Using the clinical diagnosis as the gold standard, the percent of true-positive UI cases was 98 % (active), 84 % (inactive), and 80 % (incident). A total of 75 % of BHS noncases were true negatives. The receiver operating characteristic c-statistic was 0.86. Sensitivity and specificity of the BHS were 91 % and 84 %, respectively. The Sandvik score for active cases (median = 4) was significantly greater than it was for inactive (median = 1), incident (median = 1), and noncases (median = 0) (p < 0.001). The BHS UI score was significantly correlated with the Sandvik severity score (r = 0.68, p < 0.01).

CONCLUSION

The BHS is highly reliable, with robust content and construct validity for detecting UI for use in population samples.

[Pelvic floor muscle contraction and maximum urethral closure pressure]

OBJECTIVES

The aim of this study was to precise the relationship between the pelvic floor muscle (PFM) contraction and the maximum urethral closure pressure (MUCP) at rest and during a containing effort.

MATERIALS

Longitudinal study, observational, single-center retrospective performed in successively 358 women addressed for urodynamics. MUCP at rest and during a containing effort, gain of MUCP, functional urethral length (FUL), scores USP and ICQ-SF, cervico-urethral mobility (CUM) according to POP-Q classification and leak point pressure were analyzed according to the PFM contraction.

RESULTS

One hundred and seventy-three had genuine stress urinary incontinence, 25 urge urinary incontinence, 148 mixed incontinence and 12 had no urinary incontinence. PFM contraction was not associated with a hysterectomy, age, parity, BMI, CUM, FUL, MUCP at rest, the severity of the incontinence assessed by ICIQ-SF score and leak point pressure. There was a proportional relationship between PFM contraction and the value of MUCP measured during this contraction (P<0.0001) on the one hand, and the gain of MUCP (P<0.0001) on the other. MUCP at rest was independent from the MUCP during the containing effort and the gain of MUCP.

CONCLUSIONS

The strength of contraction of the PFM is not correlated with MUCP at rest but proportional to the augmentation of the MUCP during the containing effort.

The interaction of stress and urgency urinary incontinence and its effect on quality of life

INTRODUCTION AND HYPOTHESIS

The objective was to estimate the impact of stress and urgency urinary incontinence (UI) on the quality of life (QOL), and to determine whether the impact varies according to UI severity.

METHODS

We used data from the General Longitudinal Overactive Bladder Evaluation-UI study in women. Stress and urgency UI symptom severity scores ranged from 0 to 8. We used logistic regression to test the relation among different severity levels of stress and urgency UI, and their interaction with the Incontinence Impact Questionnaire (IIQ-7). This was categorized according to percentage ranges as 0-40% (reference), 41-80%, and 81-100%.

RESULTS

Both stress and urgency UI were significantly associated with IIQ-7. Higher scores had higher odds ratios (ORs). The OR for urgency vs stress UI was greater at the same severity level. For instance, comparing IIQ-7 quintiles (0-40% vs 41-80%), the OR for an association with an urgency UI score of 5-6 was 5.27 (95% CI = 3.78-7.33) vs 2.76 (95% CI = 2.07-3.68) for a stress UI score of 5-6. Both UI subtypes were more strongly related to the upper (81-100%) than the to the lower (41-80%) quintiles. There was a strong positive urgency UI and stress UI interaction with the upper (i.e., 81-100%) but not the two next lower (41-80%) quintiles.

CONCLUSION

The impact of UI subtypes on QOL varies according to the score of IIQ-7, stress and urgency UI, and their interaction. Urgency vs stress UI has a stronger impact. The effect is greatest for high IIQ-7 scores with a significant share mediated by the interaction of the two UI subtypes.

Descriptors of sensation confirm the multidimensional nature of desire to void

AIMS

To collect and categorize descriptors of "desire to void" sensation, determine the reliability of descriptor categories and assess whether descriptor categories discriminate between people with and without symptoms of overactive bladder.

METHODS

This observational, repeated measures study involved 64 Australian volunteers (47 female), aged 50 years or more, with and without symptoms of overactive bladder. Descriptors of desire to void sensation were derived from a structured interview (conducted on two occasions, 1 week apart). Descriptors were recorded verbatim and categorized in a three-stage process. Overactive bladder status was determined by the Overactive Bladder Awareness Tool and the Overactive Bladder Symptom Score. McNemar's test assessed the reliability of descriptors volunteered between two occasions and Partial Least Squares Regression determined whether language categories discriminated according to overactive bladder status. Post hoc Chi squared analysis and relative risk calculation determined the size and direction of overactive bladder prediction.

RESULTS

Thirteen language categories (Urgency, Fullness, Pressure, Tickle/tingle, Pain/ache, Heavy, Normal, Intense, Sudden, Annoying, Uncomfortable, Anxiety, and Unique somatic) encapsulated 344 descriptors of sensation. Descriptor categories were stable between two interviews. The categories "Urgency" and "Fullness" predicted overactive bladder status. Participants who volunteered "Urgency" descriptors were twice as likely to have overactive bladder and participants who volunteered "Fullness" descriptors were almost three times as likely not to have overactive bladder.

CONCLUSIONS

The sensation of desire to void is reliably described over sessions separated by a week, the language used reflects multiple dimensions of sensation, and can predict overactive bladder status.

The iceberg of health care utilization in women with urinary incontinence

INTRODUCTION AND HYPOTHESIS

The objective of the study was to estimate prevalence of urinary incontinence (UI) health care utilization in women from the population up to specialty care.

METHODS

The General Longitudinal Overactive Bladder Evaluation-UI (GLOBE-UI) is a population-based study on the natural history of UI in women  ≥  40 years of age. Prevalence of UI was estimated by using the Bladder Health Survey (BHS). Survey data were linked with electronic health records to build the different steps of the iceberg of disease. Descriptive statistics were used to estimate the prevalence estimates at all levels of the iceberg.

RESULTS

A total sample of 7,059 women received the BHS. Of those, 3,316 (47 %) responded. Prevalence of UI was 1,366 (41 %). Women with or without UI did not differ by age or marital status. However, women with versus without UI were more parous (91 vs 87 %), significantly more overweight or obese (74 vs 61 %), and more likely to have a college education or higher (54 vs 46 %), P < 0.01. Nine hundred fifty-eight (73 %) women with UI reported duration of more than 2 years and 72 % reported moderate to severe UI symptoms. Of all 1,366 women with BHS UI diagnosis, only 339 (25 %) sought care, 313 (23 %) received some care, and 164 (12 %) received subspecialty care.

CONCLUSIONS

UI is a highly prevalent disease. Only a minority with UI appears to seek care and a fraction sees a pelvic floor specialist. It is important not only to educate women, but also primary care providers about this highly prevalent yet treatable condition.

Predictors of care seeking in women with urinary incontinence

AIMS

To determine predictors of health care utilization in women with urinary incontinence (UI) from the population to specialty care.

METHODS

The General Longitudinal Overactive Bladder Evaluation-UI is a population-based study on the natural history of UI in women ≥40 years of age. Prevalence of UI was estimated using the Bladder Health Survey (BHS). Survey data were linked with electronic health records (EHRs) to examine factors associated with a clinical UI diagnosis using logistic regression. Risk factors analyzed included: UI symptoms, subtypes, bother, severity, duration, and effect on quality of life, and demographic and other health characteristics. All statistical tests were two-sided with a P-value < 0.05 being significant.

RESULTS

The overall prevalence of any UI based on responses to the BHS was 1,618/4,064 (40%). Of the 1,618 women with UI, there were only 398 (25%) women with EHR (clinical) diagnosis of UI. Women with UI versus those without UI were more likely to be have a BMI >25 kg/m(2) (70% vs. 58%), more likely to be parous (91% vs. 87%) and college educated (54% vs. 46%), P < 0.001. After adjusting for confounders in the model, variables significantly associated with clinical UI diagnosis included: older age (OR = 1.96), higher parity (> 1 birth) (OR = 1.76), higher urgency UI (OR = 1.08), adaptive behavior (OR = 1.2), and UI bother scores (OR = 1.01), as well as more frequent outpatient visits (OR = 1.03), P < 0.05.

CONCLUSIONS

UI is a highly prevalent condition with only a minority of women seeking care. Factors associated with health care utilization include older age, parity (1+), number of doctor visits, urgency UI subtype, UI bother, and impact on behavior.

A healthy bladder: a consensus statement

A panel of experts in urology, urogynecology, nursing, and behavioral therapy convened in 2010 to discuss the importance of a healthy bladder on overall health. They determined that a consensus statement was necessary to raise awareness among the general public, healthcare providers, payors, and policymakers, with the goals of minimizing the impact of poor bladder health and stimulating primary prevention of bladder conditions. In this statement, 'healthy' bladder function is described, as well as internal and external factors that influence bladder health. It is suggested that primary prevention strategies should be aimed at providing education regarding normal lower urinary tract structures and functioning to the public, including patients and healthcare providers. This education may promote the achievement of optimal bladder health by increasing healthy bladder habits and behaviors, awareness of risk factors, healthcare seeking, and clinician engagement and reducing stigma and other barriers to treatment. Promoting optimal bladder health may reduce the personal, societal and economic impact of bladder conditions, including anxiety and depression and costs associated with conditions or diseases and their treatment. While adopting healthy bladder habits and behaviors and behaviors may improve or maintain bladder health, it is important to recognize that certain symptoms may indicate the presence of conditions that require medical attention; many bladder conditions are treatable with a range of options for most bladder conditions. Lastly, the authors propose clinical directives based on persuasive and convergent research to improve and maintain bladder health. The authors hope that this statement will lead to promotion and achievement of optimal bladder health, which may improve overall health and help minimize the effects of bladder conditions on the public, healthcare professionals, educators, employers, and payors. The advisors are in consensus regarding the recommendations for improving and maintaining bladder health presented herein.