Geographical variation in radiotherapy services across the UK in 2007 and the effect of deprivation.

AIMS: Modelling of demand has shown substantial underprovision of radiotherapy in the UK. We used national audit data to study geographical differences in radiotherapy waiting times, access and dose fractionation across the four countries of the UK and between English strategic health authorities.
MATERIALS AND METHODS: We used a web-based tool to collect data on diagnosis, dose fractionation and waiting times on all National Health Service patients in the UK starting a course of radiotherapy in the week commencing 24 September 2007. Cancer incidence for the four countries of the UK and for England by primary care trust was used to model demand for radiotherapy aggregated by country and by strategic health authority.
RESULTS: Across the UK, excluding skin cancer, 2504 patients were prescribed 33 454 fractions in the audit week. Waits for radical radiotherapy exceeded the recommended 4 week maximum for 31% of patients (range 0-62%). Fractions per million per year ranged from 17 678 to 36 426 and radical fractions per incident cancer ranged from 3.0 to 6.7. Patients who were treated received similar treatment in terms of fractions per radical course of radiotherapy (18.2-23.0). Access rates ranged from 25.2 to 48.8%, nearing the modelled optimum of 50.7% in three regions. Fractions per million prescribed as a first course of treatment varied from 43.9 to 90.3% of modelled demand. The percentage of patients failing to meet the 4 week Joint Council for Clinical Oncology target for radical radiotherapy rose as activity rates increased (r=0.834), indicating a mismatch of demand and capacity. In England, a comparison between strategic health authorities showed that increasing deprivation was correlated with lower rates of access to radiotherapy (r=-0.820).
CONCLUSIONS: There are substantial differences across the UK in the radiotherapy provided to patients and its timeliness. Radiotherapy capacity does not reflect regional variations in cancer incidence across the UK (3618-5800 cases per million per year). In addition, deprivation is a major unrecognised influence on radiotherapy access rates. In regions with higher levels of deprivation, fewer patients with cancer receive radiotherapy and the proportion treated radically is lower. This probably reflects late presentation with advanced disease, poor performance status and co-morbid illness. To provide an equitable, evidence-based service, the needs of the local population should be assessed using demand modelling based on local cancer incidence. Ideally this should include data on deprivation, performance status and stage at presentation. The results should be compared with local radiotherapy activity data to understand waits, access and dose fractionation in order to plan adequate provision for the future. The development of a mandatory radiotherapy data set in England will facilitate this, but to assist change it is essential that the results are analysed and fed back to clinicians and commissioners.