Relationship of lifestyle and clinical factors to lower urinary tract symptoms: results from Boston Area Community Health survey

The effects of acute and chronic psychological stress on bladder function in a rodent model

OBJECTIVE

Psychological stress plays a role in the exacerbation of functional lower urinary tract disorders, such as painful bladder syndrome and overactive bladder. To better understand the mechanism underlying this relationship, we characterized changes in micturition, anxiety-related behavior, and bladder pathology in rats exposed to repeated water avoidance (WA) stress.

METHODS

Twenty-four Wistar rats were subjected to WA stress or sham. Immediately after acute (day 1) and chronic (day 10) stress or sham, rats were placed in a metabolic cage for a 2-hour voiding behavior assessment. Voiding parameters were compared with baseline values obtained before stress. Four animals from each group were sacrificed on day 10 and bladders harvested for histologic and gene expression studies. The remaining 8 animals per group underwent repeated voiding assessment every 3 days for 1 month followed by 10 days of repeat WA stress or sham. Bladder histology and gene expression were studied.

RESULTS

Rats exposed to WA stress developed a significant increase in micturition frequency and decrease in latency to void, voiding interval, and volume of first void compared with sham and baseline. Alterations in micturition persisted for approximately 1 month. Stressed rats showed increased fecal pellet excretion and anxiety-like behavior. In addition, bladder specimens from stressed animals revealed increased angiogenesis, and increased total and activated mast cells.

CONCLUSION

In rats, repeated psychological stress results in lasting alterations in micturition frequency, interval, and volume. This rodent model may represent a valid tool for studying syndromes characterized by increased urinary frequency.

Urinary incontinence and its relationship to mental health and health-related quality of life in men and women in Sweden, the United Kingdom, and the United States

BACKGROUND

Differences in health burden associated with urinary incontinence (UI) subtypes have been previously described, but the majority of studies are in women. Additional research is needed to examine the prevalence and burden of UI subtype including postmicturition incontinence, nocturnal enuresis, coital incontinence, and incontinence for unspecified reasons.

OBJECTIVE

Examine the burden of UI in men and women in Sweden, the United Kingdom, and the United States.

DESIGN, SETTING, AND PARTICIPANTS

Secondary analyses of the Epidemiology of Lower Urinary Tract Symptoms (EpiLUTS), a cross-sectional Internet survey, were performed. Participants who reported UI were categorized as (1) urgency urinary incontinence (UUI) only, (2) stress urinary incontinence (SUI) only, (3) mixed urinary incontinence (MUI), (4) UUI plus other incontinence (OI), (5) SUI plus OI, or (6) OI. Differences in health outcomes across UI groups were explored by gender using descriptive statistics and general linear models.

MEASUREMENTS

Outcomes included treatment seeking for urinary symptoms, perception of bladder condition, depression, anxiety, and health-related quality of life (HRQL).

RESULTS AND LIMITATIONS

Of 14 140 men and 15 860 women, 6479 men (45.8%) and 10 717 women (67.6%) reported UI. The most prevalent UI subgroups were OI in men and SUI in women. MUI and SUI plus OI had the greatest treatment seeking among men, whereas MUI and UUI plus OI had the greatest treatment seeking among women. Men with MUI had the highest rates of anxiety, followed by those with UUI plus OI and SUI plus OI, and OI with a similar trend observed for depression. Anxiety and depression were highest in SUI plus OI and MUI women. MUI and UUI plus OI men and women had significantly lower HRQL compared with other UI groups.

CONCLUSIONS

UI is common in men and women aged >40. Individuals with UUI combined with SUI or OI bear a greater mental health burden and report poorer HRQL.

Race and ethnic differences in health beliefs about lower urinary tract symptoms

BACKGROUND

Health beliefs are an important mediator between the experience of symptoms and health behaviors, and these beliefs can vary by race or ethnicity.

OBJECTIVES

The aim of this study was to better understand the gap between experiencing symptoms and not seeking medical care by examining health beliefs about lower urinary tract symptoms across race and ethnic groups.

METHOD

Qualitative, semistructured interviews were conducted with 35 Black, Hispanic, and White people who reported at least one urinary symptom but had not spoken with a healthcare provider about the symptom(s). Drawing on Shaw's framework of health behavior and outcomes, a range of beliefs was examined: cause, consequence, continuation, and treatability. Interviews were transcribed, coded, and analyzed for themes according to race or ethnic background.

RESULTS

The belief that lower urinary tract symptoms are a typical part of aging and not amenable to medical treatment was most common among White respondents. Black respondents more commonly attributed their symptoms to personal behaviors over which they had control and therefore did not require medical care. Hispanic respondents appeared more often to live with uncertainty about the cause of their symptoms and an accompanying concern about a future health consequence.

DISCUSSION

The combination of a range of health beliefs to form a cognitive representation made sense of the behavior of not seeking medical care. The finding that sociocultural differences shaped these cognitive representations underscores the need for cultural competency in patient assessment and education. Results have implications for theories of health behavior and indicate further research with larger samples, additional psychosocial influences, and other symptoms.

Nonsteroidal antiinflammatory drug use and lower urinary tract symptoms: results from the Boston area community health survey

There is evidence for a role of inflammation in the etiology of lower urinary tract symptoms (LUTS), raising the possibility that use of nonsteroidal antiinflammatory drugs (NSAIDs) may inhibit the development or progression of LUTS. The authors examined the association between use of prescription and over-the-counter NSAIDs and LUTS among 1,974 men and 2,661 women in the Boston Area Community Health Survey (2002-2005). Multivariable-adjusted logistic regression was used to estimate odds ratios and 95% confidence intervals for LUTS, voiding symptoms, storage symptoms, and nocturia. There was no clear association between use of prescription or over-the-counter NSAIDs (compared with no NSAID use) and overall LUTS, voiding symptoms, or nocturia in men or women. However, over-the-counter NSAID use was positively associated with storage symptoms in women (odds ratio = 1.37, 95% confidence interval: 1.03, 1.83), and there was a positive association between over-the-counter NSAID use and overall LUTS among women with a history of arthritis (odds ratio = 2.09, 95% confidence interval: 1.20, 3.64). These results do not provide strong support for an association between NSAIDs and LUTS. However, the associations between over-the-counter NSAID use and certain urologic symptoms, particularly among women with arthritis, and the potential mechanisms involved should be evaluated in future studies.

Are statin medications associated with lower urinary tract symptoms in men and women? Results from the Boston Area Community Health (BACH) Survey

PURPOSE

Statins may ameliorate lower urinary tract symptoms (LUTS) through anti-inflammatory or other pathways. We investigated the association between statin use and storage, voiding, and overall LUTS symptoms.

METHODS

The Boston Area Community Health Survey is an epidemiologic study of Boston, MA residents (2301 men; 3202 women) 30-79 years of age. LUTS, voiding, and storage symptoms were ascertained through an interviewer-administered questionnaire and defined as scores of greater than or equal to 8, greater than or equal to 5, and greater than or equal to 4, respectively, on relevant components of the American Urologic Association Symptom Index. Participants were included if they had a history of provider-diagnosed high cholesterol or recently used statin medications (n = 1346). Associations were estimated using odds ratios (ORs) and 95% confidence intervals (CI) from multivariate logistic regression.

RESULTS

In multivariate models, statin use had no association with LUTS (OR= 1.03, 95% CI: 0.70, 1.51) among women. No associations were observed for any LUTS among younger (<60) men, but among older (60+) men, we observed significant inverse associations for voiding (OR= 0.23, 95% CI: 0.08, 0.66), storage (OR = 0.24, 95% CI: 0.11, 0.56), and overall LUTS (OR = 0.15, 95% CI: 0.05, 0.44).

CONCLUSIONS

Our results suggest that use of statins is associated with a lower prevalence of urologic symptoms among older men but not among women or younger men.

Dietary macronutrient intake and lower urinary tract symptoms in women

PURPOSE

To examine associations between macronutrient and total energy intakes with lower urinary tract symptoms (LUTS) in women.

METHODS

Cross-sectional analysis of 2060 women aged 30-79 years in the population-based Boston Area Community Health Survey (2002-2005). Data were collected by validated food frequency questionnaire and in-person interviews. Outcomes for multivariate logistic regression were moderate-to-severe total LUTS, storage, voiding, and postmicturition symptoms.

RESULTS

Greater total energy intake was positively associated with LUTS, specifically among women with lower waist circumferences (<76 cm, p = .005, p(interaction) = .01). Increased saturated fat intake was associated with postmicturition symptoms (Quintile 5 vs. 1, odds ratio 3.94, 95% confidence interval 1.57-9.89, p(trend) = .04). High protein intake was positively associated with storage symptoms (p(trend) = .03), particularly nocturia. No consistent associations were observed for carbohydrate, monounsaturated, or polyunsaturated fat intakes.

CONCLUSIONS

Among women with low waist circumferences, high total daily calorie intake was associated with moderate-to-severe LUTS. Although greater saturated fat intake was linked to postmicturition symptoms, the possibility that postmicturition symptoms in women represent more extensive or severe conditions should be explored in future research. These novel results indicate that dietary contributors to LUTS in women are distinct from those in men and may depend on symptom subtype and body size.

Prevalence and factors associated with uncomplicated storage and voiding lower urinary tract symptoms in community-dwelling Australian men

PURPOSE

To determine the prevalence of, and associated risk factors for, voiding and storage lower urinary tract symptoms (LUTS) in a population-based sample of Australian men.

METHODS

Data were collected from 1,103 men randomly selected, community-dwelling men, as part of the Florey Adelaide Male Ageing Study, after exclusion of men with prostate or bladder cancer or prior surgery to either organ. The presence of LUTS was assessed using the International Prostate Symptom Score. Urine flow was measured via flow meter. Demographic, clinical, and bio-psychosocial data were collected by questionnaire.

RESULTS

The prevalence of total, storage, and voiding LUTS was 18.1, 28.0 and 12.6%, respectively. The most common storage symptoms were frequency (12.3%), nocturia (9.9%) and urgency (8.1%), and voiding symptoms were weak stream (8.5%), intermittency (5.4%), incomplete emptying (5.1%) and straining (2.4%). There were linear associations between storage LUTS and increased abdominal fat mass, plasma glucose and low HDL cholesterol (components of the metabolic syndrome), obstructive sleep apnoea (OSA) risk, and retirement. Voiding symptoms were associated with a previous diagnosis of benign prostatic enlargement (BPH), mean peak urine flow, total energy intake, elevated risk of OSA, erectile dysfunction, physician-diagnosed thyroid dysfunction and higher household income.

CONCLUSIONS

The close association of storage LUTS with the metabolic syndrome, and of both storage and voiding LUTS with OSA, suggest that these conditions should be considered in men presenting with LUTS.

Risk factors and comorbid conditions associated with lower urinary tract symptoms: EpiLUTS

OBJECTIVE

To explore the risk factors and comorbid conditions associated with subgroups of lower urinary tract symptoms (LUTS) in men and women aged > or =40 years in three countries, using data from the EpiLUTS study, as LUTS are common amongst men and women and increase in prevalence with age.

SUBJECTS AND METHODS

This cross-sectional, population-representative survey was conducted via the Internet in the USA, the UK and Sweden. Participants were asked to rate how often they experienced individual LUTS during the past 4 weeks on a 5-point Likert scale. Eight LUTS subgroups were created. Descriptive statistics and logistic regressions within each LUTS subgroup were used to assess the data.

RESULTS

The survey response rate was 59%. The final sample was 30,000 (men and women). The voiding + storage + postmicturition (VSPM) group reported the highest rates of comorbid conditions for both men and women, and the fewest were reported in the no/minimal LUTS and the postmicturition-only groups. Increasing age was associated with increasing LUTS in men, but not in women. Comorbid conditions significantly associated with the VSPM group were arthritis, asthma, chronic anxiety, depression, diabetes (men only), heart disease, irritable bowel syndrome, neurological conditions, recurrent urinary tract infection, and sleep disorders. Risk factors, such as body mass index, exercise level and smoking, played less of a role, except for childhood nocturnal enuresis, which was significantly associated with most LUTS subgroups.

CONCLUSION

In this large population study, many comorbid conditions and risk factors were significantly associated with LUTS among both men and women. Further longitudinal investigations of the associations noted here would help physicians to understand the pathophysiology of LUTS and comorbid conditions, and provide clinical guidelines for patient management of comorbid conditions sharing common pathophysiological pathways.

The burden of lower urinary tract symptoms: evaluating the effect of LUTS on health-related quality of life, anxiety and depression: EpiLUTS

OBJECTIVE

To evaluate the impact of lower urinary tract symptoms (LUTS) on urinary-specific health-related quality of life (HRQL), generic health indices, depression and anxiety in a population-representative sample of men and women, as research has linked LUTS with reduced HRQL and depression, but little is known about the effects of individual LUTS on HRQL, depression and anxiety.

SUBJECTS AND METHODS

A cross-sectional population-representative survey was conducted via the Internet in the USA, the UK and Sweden. Participants rated the frequency and symptom-specific bother of individual LUTS and condition-specific HRQL, generic health status, anxiety and depression. Descriptive statistics were used to evaluate outcome differences by International Continence Society LUTS subgroups; logistic regressions were used to determine associations of LUTS and perception of bladder problems, anxiety and depression.

RESULTS

The overall survey response rate was 59.2%; 30 000 subjects (14 139 men and 15 861 women) participated. Men and women with LUTS in the all LUTS subgroup (storage, voiding and postmicturition) reported the lowest levels of HRQL and highest levels of anxiety and depression, with 35.9% of men and 53.3% of women meeting self-reported screening criteria for clinical anxiety (Hospital Anxiety and Depression Scale, HADS, Anxiety > or =8), and 29.8% of men and 37.6% of women meeting self-reported criteria for clinical depression (HADS Depression > or =8). In both men and women, storage symptoms were significantly associated with greater perceived bladder impact, whereas voiding symptoms were not. Significant predictors of anxiety included nocturia, urgency, stress urinary incontinence, leaking during sexual activity, weak stream and split stream in women; and nocturia, urgency, incomplete emptying and bladder pain in men. For depression, weak stream, urgency and stress urinary incontinence were significant for women, and perceived frequency and incomplete emptying were significant for men.

CONCLUSION

The negative effect of LUTS is apparent across several domains of HRQL and on overall perception of bladder problems, general health status and mental health. The high level of psychiatric morbidity in patients with multiple LUTS has important implications for treatment and highlights the need for further research to pinpoint specific mechanisms underlying this association.

The relationship of common medical conditions and medication use with symptoms of painful bladder syndrome: results from the Boston area community health survey

PURPOSE

The etiology of painful bladder syndrome is currently unknown. We investigated the relationship between medical factors and symptoms suggestive of painful bladder syndrome in a population based random sample.

MATERIALS AND METHODS

Data were collected from the Boston Area Community Health Survey, an epidemiological study conducted from 2002 to 2005 in a racially and ethnically diverse population (30 to 79 years old) from Boston, Massachusetts. The operational definition of painful bladder syndrome was symptom based. Those reporting pain increasing as the bladder fills and/or pain relieved by urination (fairly often/usually/almost always) for 3+ months were considered to have symptoms suggestive of painful bladder syndrome. We used multivariate logistic regression to estimate odds ratios and 95% confidence intervals (adjusted for demographics, anthropometric and other factors) for the association of comorbidities, surgery and medication use with painful bladder syndrome symptoms.

RESULTS

The prevalence of painful bladder syndrome symptoms was 1.3% in men and 2.6% in women. In men only depression was associated in a multivariate model (OR 4.96; 95% CI 1.65, 14.92). In women associations were observed for depression (OR 3.35; 95% CI 1.93, 5.81), history of urinary tract infections (OR 2.17; 95% CI 1.49, 4.96), chronic yeast infections (OR 3.11; 95% CI 1.29, 7.51), hysterectomy (OR 2.82; 95% CI 1.20, 6.62), calcium channel blockers (OR 4.59; 95% CI 2.71, 9.72) and cardiac glycosides (OR 10.28; 95% CI 1.46, 72.35), while thyroid medications and statins were inversely associated (OR 0.13; 95% CI 0.03, 0.47 and OR 0.24; 95% CI 0.08, 0.76; respectively).

CONCLUSIONS

Gynecologic factors and certain medications may be associated with the painful bladder syndrome in women. Our results for medications suggest potentially modifiable risk factors.

Cluster analysis and lower urinary tract symptoms in men: findings from the Boston Area Community Health Survey

OBJECTIVES

To classify lower urinary tract symptoms (LUTS) in a large, representative sample of men in the USA by means of cluster analysis and to investigate risk factors and comorbidities associated with the resulting cluster patterns.

SUBJECTS AND METHODS

A combination of hierarchical and non-hierarchical cluster methods was used to assign men with LUTS in the Boston Area Community Health (BACH) study to symptom-based categories or clusters. Of the 2301 men in the BACH study, those reporting one or more of 14 common LUTS (1592 men) were included in the analysis. The prevalence and frequency of symptoms in each cluster was assessed, in addition to the demographic, lifestyle risk factors, comorbidities, quality of life, and interference with activities of daily living associated with each cluster. We used anova methods for assessing cluster effects on continuous variables, and cross-classification and chi-square tests for categorical measures. Internal validity of the cluster solution was tested by means of a split-half replication, and external validity by comparison with previously published data.

RESULTS

Five clusters were identified among symptomatic men. About half of the symptomatic men were assigned to Cluster 1, which included individuals with a low prevalence and frequency of urological symptoms and a correspondingly low level of interference with activities of daily living. There were intermediate levels of symptom frequency and prevalence in Clusters 2-4, which were characterized by mixed patterns of voiding, storage and postvoiding symptoms. Cluster 5 consisted of predominantly older men (mean age 58.9 years), with a high prevalence and frequency of urological symptoms with a mean (SD) number of symptoms of 9.9 (2.1), and with elevated levels of comorbid cardiovascular disease (P < 0.001). These men also had higher rates of kidney and bladder infections and previous urological surgery. Men with increased waist circumference and more sedentary lifestyles were over-represented in the more symptomatic clusters.

CONCLUSION

Cluster analysis provides an empirically based method for categorizing men with LUTS. These findings provide a new framework for examining aetiological pathways and mechanisms, the potential impact of and consequences for comorbid conditions, and for assessing prognosis and outcomes associated with common urological disorders.