Clinical and cost-effectiveness of vaginal pessary self-management compared to clinic-based care for pelvic organ prolapse: protocol for the TOPSY randomised controlled trial

Clinical and cost-effectiveness of pessary self-management versus clinic-based care for pelvic organ prolapse in women: the TOPSY RCT with process evaluation

Background

Pelvic organ prolapse is common, causes unpleasant symptoms and negatively affects women's quality of life. In the UK, most women with pelvic organ prolapse attend clinics for pessary care.

Objectives

To determine the clinical effectiveness and cost-effectiveness of vaginal pessary self-management on prolapse-specific quality of life for women with prolapse compared with clinic-based care; and to assess intervention acceptability and contextual influences on effectiveness, adherence and fidelity.

Design

A multicentre, parallel-group, superiority randomised controlled trial with a mixed-methods process evaluation.

Participants

Women attending UK NHS outpatient pessary services, aged ≥ 18 years, using a pessary of any type/material (except shelf, Gellhorn or Cube) for at least 2 weeks. Exclusions: women with limited manual dexterity, with cognitive deficit (prohibiting consent or self-management), pregnant or non-English-speaking.

Intervention

The self-management intervention involved a 30-minute teaching appointment, an information leaflet, a 2-week follow-up telephone call and a local clinic telephone helpline number. Clinic-based care involved routine appointments determined by centres' usual practice.

Allocation

Remote web-based application; minimisation was by age, pessary user type and centre.

Blinding

Participants, those delivering the intervention and researchers were not blinded to group allocation.

Outcomes

The patient-reported primary outcome (measured using the Pelvic Floor Impact Questionnaire-7) was prolapse-specific quality of life, and the cost-effectiveness outcome was incremental cost per quality-adjusted life-year (a specifically developed health Resource Use Questionnaire was used) at 18 months post randomisation. Secondary outcome measures included self-efficacy and complications. Process evaluation data were collected by interview, audio-recording and checklist. Analysis was by intention to treat.

Results

Three hundred and forty women were randomised (self-management, n = 169; clinic-based care, n = 171). At 18 months post randomisation, 291 questionnaires with valid primary outcome data were available (self-management, n = 139; clinic-based care, n = 152). Baseline economic analysis was based on 264 participants (self-management, n = 125; clinic-based care, n = 139) with valid quality of life and resource use data. Self-management was an acceptable intervention. There was no group difference in prolapse-specific quality of life at 18 months (adjusted mean difference -0.03, 95% confidence interval -9.32 to 9.25). There was fidelity to intervention delivery. Self-management was cost-effective at a willingness-to-pay threshold of £20,000 per quality-adjusted life-year gained, with an estimated incremental net benefit of £564.32 and an 80.81% probability of cost-effectiveness. At 18 months, more pessary complications were reported in the clinic-based care group (adjusted mean difference 3.83, 95% confidence interval 0.81 to 6.86). There was no group difference in general self-efficacy, but self-managing women were more confident in pessary self-management activities. In both groups, contextual factors impacted on adherence and effectiveness. There were no reported serious unexpected serious adverse reactions. There were 32 serious adverse events (self-management, n = 17; clinic-based care, n = 14), all unrelated to the intervention. Skew in the baseline data for the Pelvic Floor Impact Questionnaire-7, the influence of the global COVID-19 pandemic, the potential effects of crossover and the lack of ethnic diversity in the recruited sample were possible limitations.

Conclusions

Self-management was acceptable and cost-effective, led to fewer complications and did not improve or worsen quality of life for women with prolapse compared with clinic-based care. Future research is needed to develop a quality-of-life measure that is sensitive to the changes women desire from treatment.

Study registration

This study is registered as ISRCTN62510577.

Funding

This award was funded by the National Institute for Health and Care Research (NIHR) Health Technology Assessment programme (NIHR award ref: 16/82/01) and is published in full in Health Technology Assessment; Vol. 28, No. 23. See the NIHR Funding and Awards website for further award information.

Cost-effectiveness of 2 Models of Pessary Care for Pelvic Organ Prolapse: Findings From the TOPSY Randomized Controlled Trial

OBJECTIVES

Pelvic organ prolapse is the descent of one or more reproductive organs from their normal position, causing associated negative symptoms. One conservative treatment option is pessary management. This study aimed to to investigate the cost-effectiveness of pessary self-management (SM) when compared with clinic-based care (CBC). A decision analytic model was developed to extend the economic evaluation.

METHODS

A randomized controlled trial with health economic evaluation. The SM group received a 30-minute SM teaching session, information leaflet, 2-week follow-up call, and a local helpline number. The CBC group received routine outpatient pessary appointments, determined by usual practice. The primary outcome for the cost-effectiveness analysis was incremental cost per quality-adjusted life year (QALY), 18 months post-randomization. Uncertainty was handled using nonparametric bootstrap analysis. In addition, a simple decision analytic model was developed using the trial data to extend the analysis over a 5-year period.

RESULTS

There was no significant difference in the mean number of QALYs gained between SM and CBC (1.241 vs 1.221), but mean cost was lower for SM (£578 vs £728). The incremental net benefit estimated at a willingness to pay of £20 000 per QALY gained was £564, with an 80.8% probability of cost-effectiveness. The modeling results were consistent with the trial analysis: the incremental net benefit was estimated as £4221, and the probability of SM being cost-effective at 5 years was 69.7%.

CONCLUSIONS

Results suggest that pessary SM is likely to be cost-effective. The decision analytic model suggests that this result is likely to persist over longer durations.

Adherence to support pessary in the treatment of pelvic organ prolapse: a retrospective study conducted among 1,371 women

INTRODUCTION AND HYPOTHESIS

The objective was to investigate the adherence to pessary treatment in women with pelvic organ prolapse (POP) who were found eligible for this treatment by the urogynecologist, at the first visit at the Department of Gynecology and Obstetrics, Odense University Hospital.

METHODS

Data were extracted from the women's medical records. Frequency tabulations were performed to describe the women's reasons for pessary discontinuation by age group. Binominal logistic regression analysis was conducted to investigate how women's age, POP characteristics, urogynecological history, and their pessary experience and management were associated with continued pessary use.

RESULTS

This study included 1,371 women treated with support pessary. Of these, 850 women continued pessary treatment and 521 women underwent surgical treatment. A history of hysterectomy (OR: 0.68, 95% CI: 0.51-0.90, p = 0.008), urinary incontinence (OR: 0.71, 95% CI: 0.56-0.89, p = 0.003), and previous pessary use (OR: 0.75, 95% CI: 0.56-0.99, p = 0.047) were significant factors associated with discontinuation. Further, women aged 81-99 years were significantly more likely to continue pessary treatment (OR: 1.77, 95% CI: 1.15-2.74, p = 0.009). "POP surgery," "prolapse stage," and "prolapse predominant compartment" were not associated with discontinuation. Approximately 38% of women aged 26-54 years discontinued owing to personal preference.

CONCLUSIONS

Hysterectomy, incontinence, and previous pessary use are significant predictors of pessary discontinuation. Increasing age is significantly associated with pessary continuation.

Theoretical and practical development of the TOPSY self-management intervention for women who use a vaginal pessary for pelvic organ prolapse

Background

Pelvic organ prolapse (POP) is a common condition in women, where the downward descent of pelvic organs into the vagina causes symptoms which impacts quality of life. Vaginal pessaries offer an effective alternative to surgery for the management of POP. However, the need for regular follow-up can be burdensome for women and requires significant healthcare resources. The TOPSY study is a randomised controlled trial which aims to determine the clinical and cost-effectiveness of self-management of vaginal pessaries. This paper describes the theoretical and practical development of the self-management intervention.

Methods

The intervention was developed using the MRC complex intervention framework, normalisation process theory (NPT) and self-management theory. The intervention aims to boost perceived self-efficacy in accordance with Bandura’s social cognitive theory and is guided by the tasks and skills Lorig and Hollman describe as necessary to self-manage a health condition.

Results

The TOPSY intervention was designed to support women to undertake the medical management, role management and emotional management of their pessary. The six self-management skills described by Lorig and Hollman: problem-solving, decision-making, resource utilisation, formation of a patient-provider partnership role, action planning and self-tailoring, are discussed in detail, including how women were supported to achieve each task within the context of pessary self-management. The TOPSY intervention includes a self-management support session with a pessary practitioner trained in intervention delivery, a follow-up phone call 2 weeks later and ongoing telephone or face-to-face support as required by the woman initiated by contacting a member of the research team.

Conclusions

The TOPSY study intervention was developed utilising the findings from a prior service development project, intervention development and self-efficacy theory, relevant literature, clinician experience and feedback from pessary using women and members of the public. In 2022, the findings of the TOPSY study will provide further evidence to inform this important aspect of pessary management.

Trial registration

ISRCTN Registry ISRCTN62510577. Registered on June 10, 2017

Do vaginal pessaries used to treat pelvic organ prolapse impact on sexual function? A systematic review and meta-analysis

INTRODUCTION AND HYPOTHESIS

Pelvic organ prolapse (POP) is common and associated with sexual dysfunction. Vaginal pessaries are an effective treatment for POP, but their impact on sexual function is not well established. The aim of this systematic review and meta-analysis was to establish the impact of vaginal pessaries used for POP on female sexual function.

METHODS

Systematic review of the literature following Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines and checklist. A comprehensive search was conducted across Cochrane Central Register of Controlled Trials (CENTRAL), Cochrane Database of Systematic Reviews, EMBASE, MEDLINE, CINAHL, ClinicalTrials.gov , The WHO International Clinical Trials Registry Platform, ProQuest Dissertations & Theses, Open Grey and Scopus Citation Database. Randomised controlled trials and cohort studies that assessed sexual function in women pre- and post-pessary treatment for POP were included, assessed for risk of bias and their results synthesised.

RESULTS

A total of 1,945 titles and abstracts were screened, 104 full-text articles were assessed for eligibility, 14 studies were included in the narrative analysis and 7 studies were included in the meta-analysis. The results suggest that, in sexually active women, there is no evidence of a deterioration in sexual function and some evidence of an improvement.

DISCUSSION

This review offers reassurance that in sexually active women who successfully use a pessary for treatment of their prolapse, there is no deterioration in sexual function. There is some evidence of an improvement in sexual function, but given the clinical heterogeneity in the studies included, caution should be taken in generalising these findings.

The TOPSY pessary self-management intervention for pelvic organ prolapse: a study protocol for the process evaluation

BACKGROUND

Process evaluations have become a valued component, alongside clinical trials, of the wider evaluation of complex health interventions. They support understanding of implementation, and fidelity, related to the intervention and provide valuable insights into what is effective in a practical setting by examining the context in which interventions are implemented. The TOPSY study consists of a large multi-centre randomised controlled trial comparing the effectiveness of pessary self-management with clinic-based care in improving women's condition-specific quality of life, and a nested process evaluation. The process evaluation aims to examine and maximise recruitment to the trial, describe intervention fidelity and explore participants' and healthcare professionals' experiences.

METHODS

The trial will recruit 330 women from approximately 17 UK centres. The process evaluation uses a mixed-methods approach. Semi-structured interviews will be conducted with randomised women (18 per randomised group/n = 36), women who declined trial participation but agreed to interview (non-randomised women) (n = 20) and healthcare professionals recruiting to the trial (n ~ 17) and delivering self-management and clinic-based care (n ~ 17). The six internal pilot centres will be asked to record two to three recruitment discussions each (total n = 12-18). All participating centres will be asked to record one or two self-management teaching appointments (n = 30) and self-management 2-week follow-up telephone calls (n = 30). Process data (quantitative and qualitative) will be gathered in participant completed trial questionnaires. Interviews will be analysed thematically and recordings using an analytic grid to identify fidelity to the intervention. Quantitative analysis will be predefined within the process evaluation analysis plan.

DISCUSSION

The wide variety of pessary care delivered across the UK for women with pelvic organ prolapse presents specific localised contexts in which the TOPSY interventions will be implemented. Understanding this contextual variance is central to understanding how and in what circumstances pessary self-management can be implemented (should it be effective). The inclusion of non-randomised women provides an innovative way of collecting indispensable information about eligible women who decline trial participation, allowing broader contextualisation and considerations of generalisability of trial findings. Methodological insights from examination of recruitment processes and mechanisms have the potential to inform recruitment mechanisms and future recruitment strategies and study designs.

TRIAL REGISTRATION

ISRCTN62510577 . Registered on 6 October 2017.