Reproducibility of instruments designed to measure subjective evaluation of female stress urinary incontinence

A theoretical model for brisk walking- and running-induced lower urinary tract symptoms (BRUTS) and the development of the BRUTS-questionnaire (BRUTS-Q): A focus group and Delphi study

AIMS

Existing questionnaires provide limited information on the nature, severity and context surrounding lower urinary tract symptoms (LUTS) experienced during running, jogging and brisk walking. The aims of this study were to develop a theoretical model of the experience of LUTS by females participating in gait-based exercise activities and to use this model to generate a questionnaire to evaluate the presence, symptoms and bother associated with LUTS experienced by females during gait-based activities.

METHODS

A theoretical model was developed through a review of the literature and refined through a focus group consultation including pelvic health physiotherapists, females who experienced leakage during exercise and academic researchers who studied female LUTS. A draft questionnaire was developed using key constructs identified in the model by the focus group. A new expert panel was recruited, which included physiotherapists, women with self-reported gait-induced LUTS and urogynecologists. This panel followed a DELPHI process to evaluate the relevance and completeness of the constructs within the questionnaire.

RESULTS

Two rounds of consultation were required to reach consensus on the completeness of included constructs as well as the inclusion and wording of questions. The resulting questionnaire contains questions related to five key constructs: physical activity characteristics, symptoms of urgency, urgency urinary incontinence, stress urinary incontinence experienced during exercise and management/mitigation strategies adopted by respondents.

CONCLUSIONS

The content validity of the brisk walking- and running-induced lower urinary tracts symptoms questionnaire has been established. The next steps are to ensure that the questionnaire has adequate comprehensibility, followed by adequate measurement properties.

Pelvic floor muscle training versus no treatment, or inactive control treatments, for urinary incontinence in women

BACKGROUND

Pelvic floor muscle training (PFMT) is the most commonly used physical therapy treatment for women with stress urinary incontinence (SUI). It is sometimes also recommended for mixed urinary incontinence (MUI) and, less commonly, urgency urinary incontinence (UUI).This is an update of a Cochrane Review first published in 2001 and last updated in 2014.

OBJECTIVES

To assess the effects of PFMT for women with urinary incontinence (UI) in comparison to no treatment, placebo or sham treatments, or other inactive control treatments; and summarise the findings of relevant economic evaluations.

SEARCH METHODS

We searched the Cochrane Incontinence Specialised Register (searched 12 February 2018), which contains trials identified from CENTRAL, MEDLINE, MEDLINE In-Process, MEDLINE Epub Ahead of Print, ClinicalTrials.gov, WHO ICTRP, handsearching of journals and conference proceedings, and the reference lists of relevant articles.

SELECTION CRITERIA

Randomised or quasi-randomised controlled trials in women with SUI, UUI or MUI (based on symptoms, signs or urodynamics). One arm of the trial included PFMT. Another arm was a no treatment, placebo, sham or other inactive control treatment arm.

DATA COLLECTION AND ANALYSIS

At least two review authors independently assessed trials for eligibility and risk of bias. We extracted and cross-checked data. A third review author resolved disagreements. We processed data as described in the Cochrane Handbook for Systematic Reviews of Interventions. We subgrouped trials by diagnosis of UI. We undertook formal meta-analysis when appropriate.

MAIN RESULTS

The review included 31 trials (10 of which were new for this update) involving 1817 women from 14 countries. Overall, trials were of small-to-moderate size, with follow-ups generally less than 12 months and many were at moderate risk of bias. There was considerable variation in the intervention's content and duration, study populations and outcome measures. There was only one study of women with MUI and only one study with UUI alone, with no data on cure, cure or improvement, or number of episodes of UI for these subgroups.Symptomatic cure of UI at the end of treatment: compared with no treatment or inactive control treatments, women with SUI who were in the PFMT groups were eight times more likely to report cure (56% versus 6%; risk ratio (RR) 8.38, 95% confidence interval (CI) 3.68 to 19.07; 4 trials, 165 women; high-quality evidence). For women with any type of UI, PFMT groups were five times more likely to report cure (35% versus 6%; RR 5.34, 95% CI 2.78 to 10.26; 3 trials, 290 women; moderate-quality evidence).Symptomatic cure or improvement of UI at the end of treatment: compared with no treatment or inactive control treatments, women with SUI who were in the PFMT groups were six times more likely to report cure or improvement (74% versus 11%; RR 6.33, 95% CI 3.88 to 10.33; 3 trials, 242 women; moderate-quality evidence). For women with any type of UI, PFMT groups were two times more likely to report cure or improvement than women in the control groups (67% versus 29%; RR 2.39, 95% CI 1.64 to 3.47; 2 trials, 166 women; moderate-quality evidence).UI-specific symptoms and quality of life (QoL) at the end of treatment: compared with no treatment or inactive control treatments, women with SUI who were in the PFMT group were more likely to report significant improvement in UI symptoms (7 trials, 376 women; moderate-quality evidence), and to report significant improvement in UI QoL (6 trials, 348 women; low-quality evidence). For any type of UI, women in the PFMT group were more likely to report significant improvement in UI symptoms (1 trial, 121 women; moderate-quality evidence) and to report significant improvement in UI QoL (4 trials, 258 women; moderate-quality evidence). Finally, for women with mixed UI treated with PFMT, there was one small trial (12 women) reporting better QoL.Leakage episodes in 24 hours at the end of treatment: PFMT reduced leakage episodes by one in women with SUI (mean difference (MD) 1.23 lower, 95% CI 1.78 lower to 0.68 lower; 7 trials, 432 women; moderate-quality evidence) and in women with all types of UI (MD 1.00 lower, 95% CI 1.37 lower to 0.64 lower; 4 trials, 349 women; moderate-quality evidence).Leakage on short clinic-based pad tests at the end of treatment: women with SUI in the PFMT groups lost significantly less urine in short (up to one hour) pad tests. The comparison showed considerable heterogeneity but the findings still favoured PFMT when using a random-effects model (MD 9.71 g lower, 95% CI 18.92 lower to 0.50 lower; 4 trials, 185 women; moderate-quality evidence). For women with all types of UI, PFMT groups also reported less urine loss on short pad tests than controls (MD 3.72 g lower, 95% CI 5.46 lower to 1.98 lower; 2 trials, 146 women; moderate-quality evidence).Women in the PFMT group were also more satisfied with treatment and their sexual outcomes were better. Adverse events were rare and, in the two trials that did report any, they were minor. The findings of the review were largely supported by the 'Summary of findings' tables, but most of the evidence was downgraded to moderate on methodological grounds. The exception was 'participant-perceived cure' in women with SUI, which was rated as high quality.

AUTHORS' CONCLUSIONS

Based on the data available, we can be confident that PFMT can cure or improve symptoms of SUI and all other types of UI. It may reduce the number of leakage episodes, the quantity of leakage on the short pad tests in the clinic and symptoms on UI-specific symptom questionnaires. The authors of the one economic evaluation identified for the Brief Economic Commentary reported that the cost-effectiveness of PFMT looks promising. The findings of the review suggest that PFMT could be included in first-line conservative management programmes for women with UI. The long-term effectiveness and cost-effectiveness of PFMT needs to be further researched.

Pelvic floor muscle training versus no treatment, or inactive control treatments, for urinary incontinence in women

BACKGROUND

Pelvic floor muscle training is the most commonly used physical therapy treatment for women with stress urinary incontinence (SUI). It is sometimes also recommended for mixed and, less commonly, urgency urinary incontinence.

OBJECTIVES

To determine the effects of pelvic floor muscle training for women with urinary incontinence in comparison to no treatment, placebo or sham treatments, or other inactive control treatments.

SEARCH METHODS

We searched the Cochrane Incontinence Group Specialised Register, which contains trials identified from the Cochrane Central Register of Controlled Trials (CENTRAL) (1999 onwards), MEDLINE (1966 onwards) and MEDLINE In-Process (2001 onwards), and handsearched journals and conference proceedings (searched 15 April 2013) and the reference lists of relevant articles.

SELECTION CRITERIA

Randomised or quasi-randomised trials in women with stress, urgency or mixed urinary incontinence (based on symptoms, signs, or urodynamics). One arm of the trial included pelvic floor muscle training (PFMT). Another arm was a no treatment, placebo, sham, or other inactive control treatment arm.

DATA COLLECTION AND ANALYSIS

Trials were independently assessed by two review authors for eligibility and methodological quality. Data were extracted then cross-checked. Disagreements were resolved by discussion. Data were processed as described in the Cochrane Handbook for Systematic Reviews of Interventions. Trials were subgrouped by diagnosis of urinary incontinence. Formal meta-analysis was undertaken when appropriate.

MAIN RESULTS

Twenty-one trials involving 1281 women (665 PFMT, 616 controls) met the inclusion criteria; 18 trials (1051 women) contributed data to the forest plots. The trials were generally small to moderate sized, and many were at moderate risk of bias, based on the trial reports. There was considerable variation in the interventions used, study populations, and outcome measures. There were no studies of women with mixed or urgency urinary incontinence alone.Women with SUI who were in the PFMT groups were 8 times more likely than the controls to report that they were cured (46/82 (56.1%) versus 5/83 (6.0%), RR 8.38, 95% CI 3.68 to 19.07) and 17 times more likely to report cure or improvement (32/58 (55%) versus 2/63 (3.2%), RR 17.33, 95% CI 4.31 to 69.64). In trials in women with any type of urinary incontinence, PFMT groups were also more likely to report cure, or more cure and improvement than the women in the control groups, although the effect size was reduced. Women with either SUI or any type of urinary incontinence were also more satisfied with the active treatment, while women in the control groups were more likely to seek further treatment. Women treated with PFMT leaked urine less often, lost smaller amounts on the short office-based pad test, and emptied their bladders less often during the day. Their sexual outcomes were also better. Two trials (one small and one moderate size) reported some evidence of the benefit persisting for up to a year after treatment. Of the few adverse effects reported, none were serious.The findings of the review were largely supported by the summary of findings tables, but most of the evidence was down-graded to moderate on methodological grounds. The exception was 'Participant perceived cure' in women with SUI, which was rated as high quality.

AUTHORS' CONCLUSIONS

The review provides support for the widespread recommendation that PFMT be included in first-line conservative management programmes for women with stress and any type of urinary incontinence. Long-term effectiveness of PFMT needs to be further researched.

Management of stress urinary incontinence with surface electromyography-assisted biofeedback in women of reproductive age

BACKGROUND AND PURPOSE

Although surgery has been widely accepted as the treatment of choice for stress urinary incontinence (SUI), there has recently been an increased interest in the conservative management of this condition. The aims of this study were to test the ability of a biofeedback-assisted pelvic-floor muscle exercise (PFME) program to affect symptoms of SUI in premenopausal women and to evaluate a training program that might lead to successful outcomes in a relatively limited number of sessions.

SUBJECTS

Twenty-six women with SUI were treated with PFME with surface electromyography (sEMG)-assisted biofeedback. All participants were of reproductive age and were treated individually for 12 sessions.

METHODS

results were evaluated with a 7-day voiding diary, a 1-hour pad test, pelvic-floor muscle strength measurements, sEMG amplitudes, a leakage index, and a quality-of-life questionnaire. These variables were compared before and after the intervention.

RESULTS

The frequency of urine loss, the occurrence of nocturia, and the number of pads required decreased significantly after the intervention. Objective cure was found in 61.5% of women. There was a significant improvement in the quality of life, in pelvic-floor muscle strength, and in the sEMG amplitudes of all contractions throughout the intervention.

DISCUSSION AND CONCLUSION

A relatively short-term intervention of PFME with sEMG-assisted biofeedback appeared to be helpful in relieving symptoms of SUI in premenopausal women and represents a reasonable conservative management option.

An evidence-based approach to the evaluation and management of stress incontinence in women

PURPOSE OF REVIEW

The aim of this article is to use evidence-based criteria to review recent publications on the evaluation and management of stress urinary incontinence in women.

RECENT FINDINGS

Longitudinal studies suggest that a familial predisposition towards stress urinary incontinence may exist. There is mounting evidence that cesarean section may play a protective role against pelvic floor damage due to labor, but this continues to be investigated. Objective parameters in the evaluation of stress urinary incontinence, such as questionnaires, pad test, and urodynamic studies, continue to undergo refinements to become more clinically relevant outcome tools. Non-invasive and minimally-invasive therapies for stress urinary incontinence are expanding. The search continues for the optimal non-autologous material in the pubovaginal sling procedure. Despite concerns over the use of synthetic material and better defined early complications, midurethral slings continue to enjoy popularity with short-term and intermediate success.

SUMMARY

Further research into the cause of stress urinary incontinence is necessary. There is still no unified protocol in the evaluation of the condition and its severity. Mid-urethral slings appear to be as efficacious as more established procedures (bladder neck suspensions, pubovaginal slings), but long-term results on safety and efficacy remain scarce.

Lower urinary tract symptoms and pelvic floor muscle exercise adherence after 15 years

OBJECTIVE

Pelvic floor muscle training effectively treats female stress urinary incontinence. However, data on long-term efficacy and adherence are sparse. Our aims were to assess current lower urinary tract symptoms and exercise adherence 15 years after ending organized training.

METHODS

Originally, 52 women with urodynamic stress urinary incontinence were randomly assigned to home or intensive exercise. After 6 months, 60% in the intensive group were almost or completely continent, compared with 17% in the home group. Fifteen years later, all original study subjects were invited to complete a postal questionnaire assessing urinary symptoms (using validated outcome tools) and current pelvic floor muscle training.

RESULTS

Response rate was 90.4%. There were no differences in any urinary outcomes or satisfaction between the 2 study groups as a whole or when restricted to those without intervening stress urinary incontinence surgery. One half of both groups had stress urinary incontinence surgery during the 15-year follow-up period. Twenty-eight percent performed pelvic floor muscle training at least weekly; this rate did not differ by original group assignment or operated status. More operated women reported severe incontinence (P = .03) and leakage that interfered with daily life (P = .04) than did nonoperated women. There were no other differences between operated and nonoperated women.

CONCLUSION

The marked benefit of intensive pelvic floor muscle training seen short-term was not maintained 15 years later. Long-term adherence to training is low. Urinary symptoms were equally common in both operated and nonoperated women. Further studies are needed to understand factors associated with long-term effectiveness of stress urinary incontinence treatments.

The effect of home biofeedback training on stress incontinence

BACKGROUND

To compare the effectiveness of pelvic floor training (PFT) with the aid of a home biofeedback device to PFT alone for urodynamic stress urinary incontinence (SUI) in women after a 1-year follow-up.

METHODS

A randomized study comparing two conservative interventions was conducted in an outpatient clinic of a university hospital. Thirty-five consecutive women were randomized to either the PFT with home biofeedback group or the PFT alone group. The intensive training period lasted 12 weeks. After 1 year, 33 women could be evaluated according to the protocol. At the 1-year visit pelvic floor muscle activity was measured and the need for surgical intervention was evaluated. Logistic multivariate analysis was used to predict response to the PFT.

RESULTS

In the home biofeedback training group 11/16 (68.8%) avoided surgery vs. 10/19 (52.6%) in the PFT alone group. The difference was not statistically significant. In the nonoperated home biofeedback group the increase in pelvic floor muscle activity (p = 0.005 in supine, p = 0.005 in standing) and the decrease in leakage index (p = 0.05) was significant after 12 weeks and pelvic floor activity remained constant. By contrast, in the nonoperated PFT group the increase in pelvic floor muscle activity after 12 weeks predicted a good result for conservative treatment.

CONCLUSIONS

This randomized controlled trial suggests that the home biofeedback method in PFT has a good success rate of 68.8%. The change achieved in leakage index after 12 weeks of training predicted an effective outcome for conservative treatment.

Validity and reliability of a questionnaire to measure the impact of lower urinary tract symptoms on quality of life: The Leicester impact scale

AIMS

To develop a condition specific quality of life measure for males and females with urinary storage symptoms of urgency, frequency, nocturia and incontinence.

MATERIALS AND METHODS

A sample of community dwelling males and females aged 40 years or more who were taking part in an epidemiological study provided data for development and validation of the scale. Questions were developed from literature review and discussions with clinicians and patients. Inclusion of items was dependent on levels of missing data and principal components analysis. Validity was assessed by comparison with the Hospital Anxiety and Depression Scale, the Bradburn Negative Affect Scale and single questions concerning the problematic nature of symptoms. Construct validity was assessed by comparing cases and non-cases, and patients with different symptom patterns. Test-retest and inter-rater reliability statistics were calculated for individual items. Responsiveness to change was measured in subjects taking part in a randomised controlled trial of a nursing intervention.

RESULTS

The scale showed high levels of internal consistency and measures of construct validity were as hypothesised. Test-retest and inter-rater reliability was moderate to excellent. The distribution of scores was skewed with low levels of impact but the questionnaire was responsive to conservative treatments in patients receiving a nursing intervention.

CONCLUSIONS

The questionnaire proved to be a valid and reliable interviewer administered instrument for measuring impact of urinary symptoms.

Pelvic floor muscle strength and response to pelvic floor muscle training for stress urinary incontinence

AIMS

Several randomized controlled trials have demonstrated that pelvic floor muscle training is effective to treat stress urinary incontinence. The aim of the present study was to compare muscle strength increase and maximal strength in responders and non-responders to pelvic floor muscle training.

MATERIALS AND METHODS

Fifty-two women with urodynamically proven stress incontinence who had participated in a six months randomized controlled trial on pelvic floor muscle training, mean age 45.4 years (range 24-64), participated in the study. The women were classified as responders and non-responders based on a combination of five effect variables covering urodynamic measurement, pad test with standardized bladder volume, and self-reports. Pelvic floor muscle strength was measured with a vaginal balloon connected to a fiber optic micro tip transducer (Camtech AS, Sandvika, Norway).

RESULTS

There was a positive correlation between improvement in PFM maximal strength and improvement measured by leakage index (r = 0.34, P < 0.01), and reduction in urinary leakage measured by the pad test (r = 0.23, P = 0.05). The total sample of 52 women comprised 21 responders, 18 unclassifiable, and 13 non-responders. There was a statistically significant difference in maximal strength after the training period between responders and non-responders; 24.0 cm H2O (95% CI:18.1-29.9) versus 12.7 cm H2O (95% CI: 6.8-18.6) P < 0.001), and strength increase; 14.8 cm H2O (95% CI: 8.9-20.7) versus 5.0 cm H2O (95% CI: 2.6-12.6), respectively (P = 0.03).

CONCLUSIONS

There was a positive relation between both pelvic floor muscle strength increase and maximal strength, and improvement of stress urinary incontinence.

[Comparative analysis of rate scales of urinary incontinence in women]

OBJECTIVE

Rate scales are used to analyse urinary incontinence. There are many scales making it difficult to compare the different studies of urinary incontinence. The purpose of this study was to evaluate and compare the rate scales pertaining specifically to urinary incontinence.

PATIENTS AND METHOD

A review of the literature was performed for publications specifically addressing rate scales of urinary incontinence. Each scale was evaluated using the following four criteria: principal characteristics (reference source, number of items addressed, scoring method, language), objectives (type of incontinence, severity and quality of life measures), psychometric properties (scientific validity, reliability and responsiveness) and linguistic validation.

RESULTS

Thirteen scales were identified. These were divided into two groups: (1) those based on "classifications" and (2) those based on specific questionnaires. Scales based on classifications were not precise and are never scientifically validated. Scales based on questionnaires were more elaborate and more detailed; nevertheless, the study of their psychometric properties was often incomplete.

DISCUSSION AND CONCLUSION

Classification-based rate scales are inadequate to analyse urinary incontinence. Questionnaire-based rate scales are superior, but at minimum, they should address the previously stated objective and psychometric criteria. The choice of questionnaire should depend on whether it is to be used in clinical practice or for research protocol.

Questionnaires for women with urinary symptoms

AIMS

To identify the characteristics of optimal symptom questionnaires in women with lower urinary tract symptoms (LUTS).

METHODS

Literature review.

RESULTS

Although numerous questionnaires have been developed for the evaluation of female LUTS, no one instrument has emerged as that preferred for collecting and reporting subjective information about LUTS in women. Questionnaires currently available range widely in intended purpose, extent and style, and in the quality of testing used to validate them.

CONCLUSIONS

Questionnaires should be constructed based on scientifically sound validation techniques that reflect disease and/or symptoms in the target population. They should be concise, easily administered and scored, discriminant between sphincter and bladder causes of incontinence, and able to measure severity and the effect of the symptom on the patient.

Increase in pelvic floor muscle activity after 12 weeks' training: a randomized prospective pilot study

OBJECTIVES

To compare electromyography-assisted biofeedback training to pelvic floor muscle training (PFMT) alone in patients with female stress urinary incontinence.

METHODS

A prospective randomized pilot study was conducted between March 1998 and February 2000 at the university hospital for outpatient care. Participants were women with urodynamically tested stress incontinence aged 31 to 69 years without previous incontinence operations, 30 volunteers altogether. The biofeedback group received an electromyography-guided biofeedback device for home training and the PFMT-alone group trained without any device at home. All patients were advised to practice for 20 minutes per day five times a week for 12 weeks.

RESULTS

According to the data analysis, muscle forces increased significantly in both supine (P <0.001) and standing (P <0.001) positions. In the supine position, the increase was significantly higher in the biofeedback group (P = 0.024). The results showed close to a significant decrease in the leakage index in the biofeedback group (P = 0.068), but in the PFMT-alone group, no change occurred. With respect to the pad test, the decrease was significant, but it was the same for both groups (P = 0.907).

CONCLUSIONS

The findings of this study show that pelvic floor muscle activity is increased and the amount of leaked urine is decreased after 3 months of PFMT. These preliminary results show a significant improvement compared with the PFMT-alone group in PFMT outcome measures in patients using electromyography-assisted biofeedback training.

Validity and reliability of an interviewer-administered questionnaire to measure the severity of lower urinary tract symptoms of storage abnormality: the Leicester Urinary Symptom Questionnaire

OBJECTIVE

To develop a valid and reliable interviewer-administered questionnaire to measure the presence and severity of storage abnormality symptoms of incontinence, urgency, frequency and nocturia.

SUBJECTS AND METHODS

Subjects were 930 men and women aged >/=40 years, taking part in a randomized controlled trial of a continence nurse practitioner (CNP) service. Criterion validity was tested by comparing questionnaire responses to 24-h pad test and 3-day urinary diary. Responsiveness was assessed by comparing questionnaire responses before and after treatment. Questions about urgency were investigated for construct validity in patients taking part in the trial who underwent urodynamic investigation (243). Test-retest and inter-rater reliability was measured at approximately 6 days in subjects recruited to an associated epidemiological study (104 and 102, respectively).

RESULTS

The questionnaire responses showed significant associations with pad-test and diary measures. Questions about the severity of daytime incontinence performed better than those measuring night-time incontinence. The response categories of soaked, wet, damp and almost dry had better associations with the pad test than other measures of the severity of incontinence. Test-retest and inter-rater reliability was good for all questions, and all were responsive to change in symptoms, showing significant differences before and after treatment.

CONCLUSION

There is a clear need for standardization of measurement using well-validated instruments. This interviewer-administered questionnaire is valid, reliable and sensitive to change in a wide range of severity of symptoms, and in both men and women aged >/=40 years. The questionnaire provides a useful assessment tool for primary and secondary care in research and clinical settings.

Effectiveness of two conservative modes of physical therapy in women with urinary stress incontinence

Stress incontinence is the most prevalent form of female urinary incontinence and it affects approximately 5% of younger women to nearly 50% of elderly women. Women have traditionally been treated with pelvic floor muscle exercises alone or with the use of vaginal cones. A new treatment mode, vaginal balls, has been developed. The aim of this study was to compare pelvic floor muscle training with and without vaginal balls and to collect information on women's subjective feelings about the two training modes. The study was carried out as a prospective randomized clinical trial. Thirty-seven women aged 25-65 were assigned either to a pelvic floor muscle training program or to a training program using weighted vaginal balls for 4 months. Treatment outcomes were assessed by a pad-test with a standardized bladder volume, vaginal palpation, and by women's self-reported perceptions. The sense of coherence score was compared with the score for a normal population. Ninety-three percent of the women completed the study. Both training modes were effective in reducing urinary leakage: with vaginal balls (P < 0.0001) and without (P < 0.019); and increasing pelvic floor muscle strength: with vaginal balls (P < 0.0039) and without (P < 0.0002). However, the reduction of urinary leakage after four months of exercise in the training group with vaginal balls was significantly better (P < 0.03) than the results in the group training with pelvic floor muscle exercises alone. The study found the weighted vaginal balls to be a good alternative for training pelvic floor muscles in women with stress urinary incontinence.

Visual analogue scale, urinary incontinence severity score and 15 D--psychometric testing of three different health-related quality-of-life instruments for urinary incontinent women

OBJECTIVE

The purpose of this study is psychometric assessment of disease-specific questionnaire, Urinary Incontinence Severity Score (UISS) and Visual Analogue Scale (VAS) in urinary incontinent women. We also investigated functional relationship between UISS, VAS and 15D-valid, generic health-related quality-of-life (HRQoL) instrument.

MATERIALS AND METHODS

Eighty-two incontinent female patients were recruited for the study that included baseline investigation and re-evaluation 13 months (range 6-21 months) after treatment. Twenty-nine control women who had urinary incontinence but were not bothered by it completed the HRQoL measurements.

RESULTS

Internal consistency and content validity of UISS was good. Both measures UISS and VAS were reproducible, Spearman's rank correlation between test-retest were 0.88 and 0.85 respectively. The control women's UISS, 15D and VAS scores were significantly lower than the patient's scores (p<0.001, Mann-Whitney U test) which proves to be a good discriminant. The changes in pad test correlated moderately well with those in the VAS and UISS. The UISS, VAS and 15D in the improved group had responsiveness (Guyatt's) statistics: 1.48, 1.74 and -0.80 respectively.

CONCLUSION

The UISS and VAS proved to be valid, reproducible and responsive to treatment for UI women. The functionality of the 15D was good but it demonstrated less sensitivity to changes after treatment.

Effect of postpartum pelvic floor muscle training in prevention and treatment of urinary incontinence: a one-year follow up

OBJECTIVE

To evaluate the long term effect of a postpartum pelvic floor muscle training course in prevention and treatment of urinary incontinence.

DESIGN

A prospective matched controlled trial.

SAMPLE AND METHODS

All women who had participated in a matched controlled study evaluating the effect of an eight-week pelvic floor muscle training program in prevention and treatment of urinary incontinence in the immediate postpartum period were contacted by telephone one year after delivery. They were invited to participate in a follow up study. The study group consisted of 81 matched pairs (n = 162), with a mean age (range) 28 years (19-40), and mean number (range) of deliveries 1.8 (1-5). Seventy-six pairs had normal vaginal deliveries and five elective caesarean sections. Registration of continence status was by structured interview and a standardised pad test. Clinical assessment of pelvic floor muscle function and strength were by vaginal palpation and vaginal squeeze pressure.

MAIN OUTCOME MEASURE

Stress urinary incontinence.

RESULTS

At the one year follow up, significantly more women in the former control group than in the training group reported stress urinary incontinence and/or showed urinary leakage at the pad test (P < 0.01). A significantly greater (P < 0.01) muscle strength increase in the period between 16th week and one year postpartum was demonstrated in the former training group (mean 4.4 cm H2O, 95% CI 3.2-5.6) than in the control group (mean 1.7 cm H2O, 95% CI 0.8-2.7).

CONCLUSION

This one year follow up study demonstrates that a specially designed postpartum pelvic floor muscle training course was effective in the prevention and treatment of stress urinary incontinence. The benefits from pelvic floor muscle training are still present one year after delivery.

A severity index for epidemiological surveys of female urinary incontinence: comparison with 48-hour pad-weighing tests

In epidemiological surveys of female urinary incontinence, it is not feasible to demonstrate urine loss objectively. The aim of this study was to develop a valid epidemiological instrument (a severity index) for assessing the severity of incontinence. The severity index is based on information about frequency (four levels) and amount of leakage (two or three levels). By multiplication, an index value (1-8 or 1-12) is reached. This index value is further categorized into a severity index of three or four levels. The index was compared with the results of 315 pad-weighing tests performed by 265 women in hospital and general practice. Data from an epidemiological survey were also re-analyzed by applying the four-level severity index. Mean pad-weighing results (grams per 24 hours, 95% confidence interval) for the three-level severity index was slight (6; 2-9), moderate (17; 13-22), and severe (56; 44-67). For the four-level severity index, the results were slight (6; 2-9), moderate (23; 15-30), severe (52; 38-65), and very severe (122; 84-159). Spearman's correlation coefficient for pad-weighing results and the three-level severity index was 0.47 (P < 0.01) and for the four-level severity index 0.54 (P< 0.01). The four-level severity index gave a more balanced distribution among the women in the clinical materials, and data from the epidemiological survey showed that the four-level severity index identifies a sub-group of older women with very severe incontinence. The four-level severity index seems to be a valid representation of incontinence severity as measured by pad-weighing tests in women presenting for clinical care. It should be considered a potentially valid measure of incontinence severity in epidemiological studies. Neurourol. Urodynam. 19:137-145, 2000.

The prevalence of stress incontinence during pregnancy and following delivery

OBJECTIVES

To examine the variation in findings from epidemiological studies which describe the prevalence of stress incontinence during and after pregnancy, and to undertake a prospective survey of the prevalence of stress incontinence during pregnancy and following childbirth in order to provide clarification of the findings presented in the literature.

DESIGN

A review of the literature was undertaken using the Medline and Popline CD Rom. A postal questionnaire was sent to a sample of women when they reached 34 weeks' gestation and repeated at 8 weeks postpartum.

PARTICIPANTS

1008 women were recruited to the study when they attended the antenatal clinic at two hospitals in the north west of England. Seven hundred and seventeen (71%) women responded to the first questionnaire and 572 (57%) completed the second questionnaire.

FINDINGS

The prevalence of stress incontinence during pregnancy reported in the literature ranges from 20 to 67%. Following delivery the reported prevalence is between 6 and 29%. In the present study 59% of women reported stress incontinence during pregnancy, and 31% following delivery. Ten per cent of the women had daily episodes of incontinence during their pregnancy, 2% of all women reported daily incontinence following delivery. An association was found between parity and stress incontinence, with women of higher parity being more likely to experience the condition. No difference in the prevalence of stress incontinence was found between women who had a normal delivery and those having an instrumental delivery. A caesarean section was found to be associated with a lower incidence of stress incontinence compared with a normal spontaneous delivery.

KEY CONCLUSION

A high proportion of women experienced stress incontinence during pregnancy and/or following delivery. Some women reported severe symptoms, with leakage on a daily basis. Women of higher parity were more likely to suffer from the condition. Whilst women who had a normal spontaneous delivery or an instrumental delivery reported a similar level of stress incontinence, women who had a caesarean section were less likely to have the condition.

Single blind, randomised controlled trial of pelvic floor exercises, electrical stimulation, vaginal cones, and no treatment in management of genuine stress incontinence in women

OBJECTIVE

To compare the effect of pelvic floor exercises, electrical stimulation, vaginal cones, and no treatment for genuine stress incontinence.

DESIGN

Stratified, single blind, randomised controlled trial.

SETTING

Multicentre.

PARTICIPANTS

107 women with clinically and urodynamically proved genuine stress incontinence. Mean (range) age was 49.5 (24-70) years, and mean (range) duration of symptoms 10.8 (1-45) years.

INTERVENTIONS

Pelvic floor exercise (n=25) comprised 8-12 contractions 3 times a day and exercise in groups with skilled physical therapists once a week. The electrical stimulation group (n=25) used vaginal intermittent stimulation with the MS 106 Twin at 50 Hz 30 minutes a day. The vaginal cones group (n=27) used cones for 20 minutes a day. The untreated control group (n=30) was offered the use of a continence guard. Muscle strength was measured by vaginal squeeze pressure once a month.

MAIN OUTCOME MEASURES

Pad test with standardised bladder volume, and self report of severity.

RESULTS

Improvement in muscle strength was significantly greater (P=0.03) after pelvic floor exercises (11.0 cm H2O (95% confidence interval 7.7 to 14.3) before v 19.2 cm H2O (15.3 to 23.1) after) than either electrical stimulation (14.8 cm H2O (10. 9 to 18.7) v 18.6 cm H2O (13.3 to 23.9)) or vaginal cones (11.8 cm H2O (8.5 to 15.1) v 15.4 cm H2O (11.1 to 19.7)). Reduction in leakage on pad test was greater in the exercise group (-30.2 g; -43. 3 to 16.9) than in the electrical stimulation group (-7.4 g; -20.9 to 6.1) and the vaginal cones group (-14.7 g; -27.6 to -1.8). On completion of the trial one participant in the control group, 14 in the pelvic floor exercise group, three in the electrical stimulation group, and two in the vaginal cones group no longer considered themselves as having a problem.

CONCLUSION

Training of the pelvic floor muscles is superior to electrical stimulation and vaginal cones in the treatment of genuine stress incontinence.

Efficacy of pelvic floor muscle exercises in women with stress, urge, and mixed urinary incontinence

OBJECTIVES

Our purpose was (1) to evaluate the efficacy on an intent-to-treat basis of a 3-month course of pelvic floor muscle exercises as first-line therapy for urinary incontinence in consecutive women seen in a tertiary care center with stress, urge, and mixed urinary incontinence and (2) to evaluate whether a specially designed audiotape improves compliance and efficacy of the exercises.

STUDY DESIGN

A prospective randomized trial wa conducted with 71 women seen for treatment of urinary incontinence in two tertiary care center referral clinics (in the departments of gynecology and urology). The primary outcome measure was the number of incontinent episodes, as documented with a 3-day voiding diary. Statistical analysis included t tests and Wilcoxon signed-ranks test, as appropriate. A value of p < or = 0.05 was considered significant.

RESULTS

Forty-four percent of all enrollees had a > or = 50% improvement in the number of incontinent episodes per day. This increased to 56% of enrolles who completed the treatment course. For all enrollees the mean number of incontinent episodes per day decreased from 2.6 to 1.7 for genuine stress incontinence, from 3.5 to 2.3 for detrusor instability, and from 3.9 to 3.2 for mixed incontinence. For enrollees who completed the 3-month course the mean number of incontinent episodes per day decreased from 2.5 to 1.4 for genuine stress incontinence, from 2.8 to 0.5 for detrusor instability, and from 3.0 to 1.7 for mixed incontinence. Six months after completing the course of exercises approximately one third of all enrollees reported that they continued to note good or excellent improvement and desired no further treatment. There was no difference in outcome measures and no difference in compliance between the women who exercised with the aid of the audiotape and those who exercised according to our usual office routine (p > 0.05).

CONCLUSIONS

One third of all participants remained improved to the patient's satisfaction 6 months after completion of a risk-free, inexpensive, simply provided therapy. Our audiotape did not improve our success rate or decrease the dropout rate. In this study the exercises were equally effective for all three urodynamic diagnoses. Inexpensive methods that could be used by primary care providers to improve the success rate of this therapy merits further attention.