The natural history of overactive bladder and stress urinary incontinence in older women in the community: a 3-year prospective cohort study.

AIMS: This is the first study designed to describe the natural history of stress urinary incontinence (SUI) and overactive bladder (OAB), using validated symptom syndrome severity scores developed for the purpose. METHODS: Two separate but related studies were involved, (i) a clinic sample (N = 2,052) from a randomised controlled trial (RCT) and (ii) a prospective cohort study (N = 12,750) with 3-year follow-up. Subjects in both studies were women aged 40 or more living in the community, approached using similar postal questionnaires. Severity scores using standardised urinary symptoms were derived for SUI and OAB from weightings obtained from logistic regression models of symptoms in relation to urodynamic diagnosis. Symptom severity scores were plotted for baseline and 3 years of follow-up to demonstrate the natural history of the main categories of SUI and OAB. RESULTS: Overactive bladder and SUI syndrome severity scores showed good criterion validity in relation to relevant clinical measures and good test-retest reliability. OAB severity increased progressively with age including a period of accelerated increase in the 60s. In contrast, SUI severity showed two age-related peaks around age 60 and again at age 80. SUI severity also showed a more fluctuating pattern from year to year compared to OAB. CONCLUSIONS: Contrasting patterns of natural history for OAB and SUI syndromes were identified consistent with differences in the patterns of related co-morbidities. Further studies are needed to confirm these findings.

Relationship between urinary symptoms reported in a postal questionnaire and urodynamic diagnosis.

AIMS: To describe the relationship between symptoms reported in a self-completed postal questionnaire and urinary disorders based on urodynamic investigation. METHODS: The study population was selected from women aged 40 years or over living in the community, who responded to a postal questionnaire. Following assessment and appropriate conservative interventions, those with a pre-defined level of severity of symptoms were offered urodynamic investigation. Logistic regression examined the association between urinary symptoms and the urodynamic diagnoses of detrusor overactivity (DO) and urodynamic stress incontinence (USI). RESULTS: Four hundred eighty-eight women completed urodynamic investigation; 29.1% (142/488) were found to have DO, 33.6% (164/488) USI, 20.7% (101/488) mixed incontinence, and 16.6% (81/488) no urodynamic abnormality. Stress incontinence (SI) and urge incontinence (UI) were included in the risk model for USI. SI reported monthly or more was associated with increased risk of USI, and UI reported weekly or more with decreased risk (sensitivity 76.9%; specificity 56.3%; positive predictive value (PPV) 67.8%). For DO, strong or overwhelming urgency, UI monthly or more, and nocturia once a night or more were all significantly associated with an increased risk while reporting of SUI monthly or more reduced the risk (sensitivity 63.1%; specificity 65.1%; PPV 63.1%). CONCLUSIONS: Urinary symptoms reported in a postal questionnaire are able to predict urodynamic diagnoses with moderate accuracy. These models may be useful tools with which to categorize urinary disorders for epidemiological study and, with further development, allocate first line treatment.

Storage symptoms of the bladder: prevalence, incidence and need for services in the UK.

OBJECTIVE: To establish valid and reliable prevalence and incidence rates for urinary incontinence and storage disorder, and estimate the extent of healthcare need and requirement for the UK. SUBJECTS AND METHODS: This was a cross-sectional and longitudinal population-based study involving registrants with 108 general practices in Leicestershire and Rutland counties (UK). In all, 162 533 (prevalence study) and 39 602 (incidence study) people aged > or = 40 years were approached by postal questionnaire, with response rates of 60% and 63%, respectively; 1050 non-responders were followed up. The main measures were incontinence (involuntary leakage) storage disorder (including incontinence or urgency or frequency or nocturia above clinically defined thresholds), storage symptoms (as for storage disorder, above epidemiologically defined thresholds), professionally defined healthcare need (storage disorder, or storage symptoms with an impact on quality of life, QoL), and healthcare requirement (using services or wanting help among those with a healthcare need), all within the last year. RESULTS: The period prevalence was: moderate or greater incontinence, 16.1%; storage disorder, 28.5%; storage symptoms with impact on QoL, 30.4%; healthcare need, 37.1% and requirement 20.4%. Among those with storage disorders 81% reported effects on QoL. Annual incidence rates were: incontinence, 6.3%; storage disorder, 14.1%; healthcare need, 15.6% and requirement 8.4%. The remission rates were substantially greater in men than women. The problem becomes increasingly established and less likely to remit with age. CONCLUSIONS: In the UK over a 1-year period, over a third of people aged > or = 40 years are estimated to have a healthcare need for urinary storage symptoms (i.e. 9 million) and a fifth (i.e. 5 million) are estimated to require healthcare, with unmet requirement affecting 3 million. This represents a major public health problem. Apparent inconsistencies between prevalence, impact and uptake of services are explained.

The association of diet and other lifestyle factors with overactive bladder and stress incontinence: a longitudinal study in women.

OBJECTIVES: To investigate the role of diet and other lifestyle factors in the incidence of overactive bladder and stress incontinence in women. Studies have suggested relationships between different aspects of lifestyle and symptoms of urinary incontinence, but there is a lack of firm evidence about their role in its cause. SUBJECTS AND METHODS: A random sample of women aged >or= 40 years living at home took part in a prospective cohort study. Baseline data on urinary symptoms, diet and lifestyle were collected from 7046 women using a postal survey and food-frequency questionnaire. Follow-up data on urinary symptoms were collected from 6424 of the women in a postal survey 1 year later. Logistic regression was used to investigate the association of food and drink consumption and other lifestyle factors with the incidence of overactive bladder and stress incontinence. RESULTS: In the multivariate model for the onset of an overactive bladder, there were significantly increased risks associated with obesity, smoking and consumption of carbonated drinks, and reduced risks with higher consumption of vegetables, bread and chicken. Obesity and carbonated drinks were also significant risk factors for the onset of stress incontinence, while consumption of bread was associated with a reduced risk. CONCLUSIONS: Causal associations with obesity, smoking and carbonated drinks are confirmed for bladder disorders associated with incontinence, and additional associations with diet are suggested. Behavioural modification of lifestyle may be important for preventing and treating these disorders.

Evaluation of a hip fracture risk score for assessing elderly women: the Melton Osteoporotic Fracture (MOF) study.

Risk assessment for osteoporotic fracture within a primary care context, in old age, has received little attention. We aimed to develop such a risk score and assess its feasibility and validity. This was a 100% population-based, prospective cohort study, with a minimum 5 1/2 year follow-up among women aged 70 years and over, set in a large single general practice in Melton Mowbray, Leicestershire, UK. The main outcome measures were hip fracture, death and migration. Baseline measures included calcaneal broadband ultrasound attenuation (BUA), reported falls, balance, previous fracture history, medical problems, visual acuity, foot problems, body size, lifestyle factors and cognitive impairment. Seventy percent of the sample (1289) participated, including those in residential accommodation. Independent predictors of hip fracture over 3 years were low weight, kyphosis, poor circulation in the foot, epilepsy, short-term use of steroids and poor trunk maneuver. Using the highest tertile, a risk score based on these variables identified 84% (95% CI: 70% to 98%) of the hip fractures with a specificity of 68% (95% CI: 65% to 71%). BUA did not independently predict hip fracture in women of this age group. This study shows that a combination of readily obtained risk factors can identify elderly women who will sustain a hip fracture in the next 3 years more accurately than bone measurements alone in younger women. It also suggests that a risk score approach to universal assessment in the elderly is a feasible proposition in the primary care setting.