Report Sample: Service Evaluation of a Community Diabetes Clinic

Model Answer

Executive Summary

This report evaluates the community Type 2 diabetes management clinic run from Fenholt Health Centre, using Donabedian’s (1988) structure–process–outcome framework to assess whether the service is achieving its intended clinical and patient-experience goals ahead of a commissioning review. The evaluation draws on a retrospective audit of 96 patient records enrolled in the clinic for at least twelve months, together with a patient satisfaction questionnaire completed by 68 attendees.

Clinically, the service shows a substantial positive effect: mean HbA1c fell from 68.4 to 59.1 mmol/mol over twelve months, and the proportion of patients meeting the NICE (2022) target of below 58 mmol/mol more than doubled, from 22% to 47%. Patient satisfaction was high, at a mean of 4.2 out of 5, with particular praise for continuity of care and the accessibility of the dietitian-led sessions. However, the audit also identifies a structural weakness: appointment attendance was uneven across the patient group, with markedly lower attendance among patients from the two most deprived local output areas, indicating a health inequality the current service model has not fully addressed.

The report recommends four actions: introducing a flexible appointment slot for patients facing transport or work-schedule barriers, piloting a telephone or video follow-up option for stable patients, strengthening data recording of ethnicity and deprivation indicators to support future equity monitoring, and formalising a structured six-month review point rather than relying on ad hoc rebooking. These are intended to preserve the service’s strong clinical outcomes while closing the identified access gap before the next commissioning cycle.

Introduction

Type 2 diabetes affects an estimated 4.3 million people in the UK and places substantial demand on primary and community care services, with poorly controlled disease strongly associated with cardiovascular, renal and ophthalmic complications (NICE, 2022). National guidance recommends structured, multidisciplinary community-based diabetes management as an alternative to hospital outpatient care for patients with stable disease, on the basis that it improves accessibility and self-management support while reducing pressure on secondary care (NICE, 2022; Diabetes UK, 2023).

Access to this kind of community-based care is not, however, evenly distributed. National evidence consistently shows that people living in more deprived areas experience both a higher prevalence of Type 2 diabetes and poorer outcomes once diagnosed, a pattern attributed less to individual behaviour than to structural barriers in accessing consistent, convenient care (Marmot et al., 2020). Any service evaluation of a community diabetes clinic therefore needs to consider not only whether the service improves outcomes on average, but whether those improvements are being experienced equally across the patient population it serves, rather than concentrated among patients already best placed to attend regularly.

The Fenholt Health Centre diabetes clinic was established three years ago as a nurse-led, dietitian-supported weekly clinic for patients referred by local GP practices. Ahead of the forthcoming commissioning review, the clinical lead has requested an independent service evaluation to determine whether the clinic is delivering the intended benefits and where improvement is needed, rather than assuming continued funding without evidence.

This report addresses three objectives, structured using Donabedian’s (1988) widely used framework for evaluating health service quality: first, to describe the structural resources and processes of care delivered by the clinic; second, to assess clinical and patient-experience outcomes against national benchmarks; and third, to identify any gaps in service delivery, particularly around equitable access, and to recommend improvements. Patient identifiers were removed prior to analysis and the evaluation was conducted under the trust’s standard service evaluation governance route, which does not require full research ethics committee approval as no new intervention was tested; all names and identifying details in this report are fictionalised for the purposes of this model exercise.

Method/Approach

This evaluation combines two data sources within Donabedian’s (1988) structure–process–outcome framework. Structural and process elements — staffing, clinic frequency, referral pathway and the content of a typical care episode — were described through a review of the clinic’s standard operating procedure and a short interview with the lead diabetes specialist nurse.

Outcome data was drawn from a retrospective audit of the electronic patient records of 96 patients who had been enrolled in the clinic for at least twelve months, extracting HbA1c and BMI values recorded at enrolment and at the most recent twelve-month review, along with appointment attendance history. Records were anonymised before analysis, and patients’ lower super output area of residence was used, via the published Index of Multiple Deprivation (Ministry of Housing, Communities and Local Government, 2019), to examine whether attendance varied by deprivation decile.

Patient experience was assessed through a short satisfaction questionnaire, adapted from a validated NHS patient experience survey instrument, distributed to patients attending clinic over a four-week period, with 68 of 84 approached patients responding (an 81% response rate). The questionnaire used five-point Likert-scale items covering perceived usefulness of the clinic, ease of access, and continuity of care, together with a free-text comment field. Quantitative outcome and questionnaire data were analysed descriptively; free-text comments were reviewed thematically to identify recurring points, following a simplified thematic approach consistent with Braun and Clarke (2006).

The main limitation of this method is that the outcome audit is observational and retrospective, with no comparison group, so improvements in HbA1c cannot be attributed to the clinic alone with certainty; some patients may also have received dietary or medication changes from their GP independently of clinic attendance. This is addressed further in the Discussion.

The audited cohort of 96 patients had a mean age of 61 years and a mean disease duration of 6.4 years at enrolment, broadly representative of the wider practice population registered with the referring GP surgeries according to the trust’s routine diabetes register data. Patients were included in the outcome audit only if they had at least one recorded HbA1c value within three months either side of both the enrolment and twelve-month time points, to ensure the comparison reflected values taken close to the intended assessment windows rather than values recorded much earlier or later; six patients who did not meet this criterion were excluded from the outcome table, leaving the 96 reported. This inclusion rule slightly favours patients with more consistent contact with primary care, which is acknowledged as a further limitation alongside the absence of a comparison group.

Findings

The clinic operates weekly, staffed by one band 6 diabetes specialist nurse and a dietitian present fortnightly, with a typical care episode comprising a 30-minute initial assessment, individualised dietary and medication review, and a follow-up appointment interval set flexibly by the nurse based on clinical need, rather than a fixed protocol. This process description suggests the structural model is broadly consistent with NICE (2022) recommendations for structured community diabetes care, though the absence of a fixed review interval is noted below as a contributor to inconsistent follow-up.

Table 1 summarises the clinical outcome audit. Mean HbA1c fell by 9.3 mmol/mol over twelve months, from a baseline mean of 68.4 mmol/mol (indicating poorly controlled diabetes) to 59.1 mmol/mol, just above the NICE (2022) target threshold of 58 mmol/mol. The proportion of patients meeting this target individually rose from 22% to 47%. Mean BMI also fell modestly, by 1.4 kg/m², consistent with the dietitian-led component of the service having some measurable effect alongside medication optimisation.

Overall appointment attendance across the twelve-month audit period was 81%, which compares favourably with reported attendance rates for comparable community long-term condition clinics. However, when attendance was examined by patient postcode deprivation decile, patients living in the two most deprived deciles had a mean attendance rate of 68%, compared with 87% for patients in the six least deprived deciles, an 19 percentage-point gap that was not explained by clinical severity at baseline: mean baseline HbA1c did not differ meaningfully between the higher- and lower-attendance groups (69.1 vs 67.9 mmol/mol respectively), which supports interpreting the attendance gap as an access issue rather than a difference in how unwell patients were when they joined the clinic.

A secondary breakdown of the outcome data by number of appointments attended found a broadly dose-dependent relationship: patients who attended at least four of the scheduled review appointments over the twelve-month period achieved a mean HbA1c reduction of 11.8 mmol/mol, compared with 4.2 mmol/mol among patients who attended two or fewer appointments. While this comparison is descriptive rather than adjusted for confounding factors, it is directionally consistent with the clinic’s dietary and self-management support being the mechanism driving improvement, since more contact time would be expected to strengthen this effect, and it reinforces why the attendance disparity identified above is clinically, and not only operationally, significant.

The patient satisfaction questionnaire returned a mean overall score of 4.2 out of 5. The highest-scoring item was continuity of seeing the same nurse (mean 4.5), and the lowest-scoring item was ease of getting a convenient appointment time (mean 3.4). Thematic review of free-text comments echoed this gap: several respondents specifically mentioned difficulty attending during standard weekday clinic hours because of work commitments or reliance on public transport, directly corroborating the attendance disparity identified in the record audit.

Discussion

The outcome data indicates that the Fenholt clinic is achieving clinically meaningful improvements in glycaemic control, broadly in line with the evidence base for structured community diabetes management summarised by Diabetes UK (2023) and consistent with NICE (2022) guidance that such models can achieve outcomes comparable to hospital-based care at lower cost and greater convenience for patients. The high continuity-of-care satisfaction score also reflects a recognised strength of small, nurse-led clinics, where patients see the same practitioner over time; this consistency is associated in the wider literature with improved self-management engagement (Diabetes UK, 2023).

The attendance disparity by deprivation decile is the most significant finding from an equity perspective. It is consistent with a well-established pattern in the health inequalities literature, in which structural barriers such as inflexible working hours, transport cost and caring responsibilities disproportionately affect attendance among patients in more deprived areas, independent of their motivation to manage their condition (Marmot et al., 2020). Because the free-text questionnaire comments corroborate this pattern directly, it is reasonable to conclude that the service’s current fixed weekday clinic structure, rather than patient engagement itself, is a meaningful contributor to the attendance gap.

This finding must be read alongside the audit’s methodological limitation: because there was no comparison group, the improvement in HbA1c cannot be attributed to the clinic with full certainty, and it is plausible that some of the observed change reflects concurrent primary care medication optimisation. Nonetheless, the consistency of the improvement across nearly all patients audited, together with the plausibility of the mechanism (structured dietary and self-management support) and the dose-dependent relationship between attendance frequency and HbA1c improvement identified in the Findings, supports treating the clinic as a meaningful contributor to the outcome rather than dismissing the finding.

The dose-dependent relationship between attendance and outcome also reframes the significance of the equity finding. If attendance were unrelated to outcome, the lower attendance among more deprived patients would still be undesirable from an access standpoint but would not, in itself, translate into a clinical disadvantage. Because attendance and outcome appear linked in this audit, however, the current service structure risks compounding an existing health inequality rather than merely reflecting it: patients from more deprived backgrounds, who nationally already experience poorer diabetes outcomes on average (Marmot et al., 2020), are also the group least able to access the full benefit of a service specifically designed to improve those outcomes. This strengthens rather than weakens the case for prioritising the access-focused recommendations below, over the lower-priority process recommendation concerning review scheduling.

It is also worth noting what this evaluation cannot determine. Because the questionnaire response rate, while good at 81%, was not universal, it is possible that patients who disengaged from the clinic entirely — and who may be disproportionately drawn from the lower-attendance, higher-deprivation group identified in the record audit — are underrepresented in the satisfaction findings, which could mean the reported 4.2 mean score somewhat overstates satisfaction among the patient population as a whole. This does not undermine the outcome audit, which is drawn from clinical records rather than self-selected questionnaire responses, but it is a reason for caution in interpreting the satisfaction data as fully representative.

Recommendations

1. Introduce a flexible early-morning or early-evening appointment slot (high priority, low cost). A weekly slot outside standard working hours should be piloted to directly address the transport and work-schedule barriers identified in both the attendance audit and the patient comments, targeting the patients currently least well served. This does not require additional clinical hours overall, only a redistribution of some existing sessions, and should be trialled for two full review cycles before being assessed for permanence.

2. Pilot a telephone or video follow-up option for stable patients (medium priority, low cost). Patients with HbA1c consistently within target for two consecutive reviews could be offered a remote follow-up option in place of some in-person visits, reducing the transport burden identified as a barrier while preserving in-person contact for patients with less stable control. Given that dose-dependent improvement was linked to attendance frequency rather than appointment format specifically, this option should be positioned as reducing the practical burden of attending rather than as a substitute for the same level of contact, and eligibility should be reviewed at each check-in rather than fixed permanently.

3. Strengthen deprivation and equity monitoring (medium priority, low cost). Deprivation decile and attendance should be reviewed as a standing quarterly metric, rather than a one-off audit finding, so that the effect of the recommended changes on the attendance gap can be tracked over time and reported at each commissioning review, rather than being revisited only when a further ad hoc evaluation is commissioned.

4. Formalise a structured six-month review point (medium priority, low cost). Introducing a standard six-month review interval, rather than leaving follow-up timing to individual nurse discretion, would improve consistency of care planning and make future outcome audits more directly comparable across the patient cohort, addressing one of the methodological limitations identified in this evaluation.

5. Extend the satisfaction survey to non-attending and disengaged patients (lower priority, low cost). To address the possible underrepresentation of disengaged patients identified in the Discussion, a short postal or telephone survey should be piloted with patients who have not attended in the past six months, to establish whether their reasons for disengagement differ from the access barriers identified among currently attending patients, and to check whether the reported satisfaction score of 4.2 would hold across the wider registered population.

Conclusion

This evaluation finds that the Fenholt Health Centre diabetes clinic is delivering clinically meaningful improvements in glycaemic control and BMI, alongside strong patient satisfaction driven largely by continuity of care, supporting its continuation in the forthcoming commissioning review. At the same time, the audit identifies a clear and corroborated equity gap in attendance associated with patient deprivation, linked to the fixed weekday structure of the current clinic model rather than to patient engagement itself, and this gap appears to carry a genuine clinical cost given the dose-dependent relationship observed between attendance and HbA1c improvement.

The five recommendations set out above are intended to close this gap without compromising the clinical strengths of the service that patients and staff currently value, while also addressing the methodological limitations of this evaluation so that future service evaluations can build on more complete data. Taken together, they represent a low-cost, deliverable package that the clinical lead can put forward to the commissioning review as evidence that the service is not only clinically effective on average, but is being actively managed to ensure that effectiveness reaches all of the patients it is intended to serve.

References

• Braun, V. and Clarke, V. (2006) ‘Using thematic analysis in psychology’, Qualitative Research in Psychology, 3(2), pp. 77–101.
• Diabetes UK (2023) State of the Nation: Diabetes Care in the UK. London: Diabetes UK.
• Donabedian, A. (1988) ‘The quality of care: how can it be assessed?’, JAMA, 260(12), pp. 1743–1748.
• Marmot, M., Allen, J., Boyce, T., Goldblatt, P. and Morrison, J. (2020) Health Equity in England: The Marmot Review 10 Years On. London: Institute of Health Equity.
• Ministry of Housing, Communities and Local Government (2019) The English Indices of Deprivation 2019. London: MHCLG.
• NICE (2022) Type 2 Diabetes in Adults: Management (NG28). London: National Institute for Health and Care Excellence.
• NHS England (2021) Diabetes Prevention and Care: National Service Framework Update. London: NHS England.
• World Health Organization (2016) Global Report on Diabetes. Geneva: WHO.