Introduction

Referral rates, conversion rates and detection rates for urgent suspected cancer referrals have been published for a range of geographies within England, for all cancers and by referral type or cancer site. These results provide insights, for all cancer groups, into referral activities and their contribution to diagnostic pathways. They should improve the understanding of cancer diagnostic pathways and inform resource or intervention planning.


Materials and methods

For each cancer site, this document provides a descriptive summary comparing referral rates, conversion rates and detection rates, including:

  • the trend over time for England, from April 2009 to March 2023, and
  • the range (lowest and highest) of rates for each level of geography in April 2009 to March 2010, the earliest data published, and in April 2022 to March 2023, the latest data published.

There have been changes in trends due to the impact of COVID-19 on some activity. Please consider this at all times when interpreting data for April 2020 to March 2021 figures in particular and, to a smaller degree, April 2019 to March 2020 figures.

For sarcoma, brain or central nervous system (CNS) cancers, childhood cancers, and other cancers at smaller geographical levels, conversion and detection rates are not presented in the descriptive summary due to small number of cases. For lower gastrointestinal (GI), upper GI, gynaecological, haematological and head and neck sites, some combinations of geography and site are based on 3-year rolling averages, in these cases the conversion and detection rates are not presented in the descriptive summary.

From April 2020 to March 2021, additional referral types are aggregated into the Other referral type category. These include a referral type for non-specific symptoms and a new Other suspected cancer referral type.

Differences in referral rates, conversion rates and detection rates by site (of referral or diagnosed tumour) may reflect different symptom profiles, diagnostic complexity and pathways.

Using Cancer Waiting Times (CWT) data, provided by NHS England, urgent suspected cancer referrals, conversion rate and detection rate are defined as follows:

  • Urgent suspected cancer referrals (commonly, two-week wait referrals) are used to refer patients with possible cancer symptoms to secondary care for investigation and possible diagnosis.
  • Crude referral rate (number per 100,000 population) is the number of urgent suspected cancer referrals multiplied by 100,000 divided by the population.
  • Conversion rate is the percentage of urgent suspected cancer referrals which result in a diagnosis of cancer.
  • Detection rate is the percentage of cases recorded in the CWT data as receiving a first treatment for cancer which resulted from an urgent suspected cancer referral.

The majority of patients urgently referred for suspected cancer are not diagnosed with cancer, meaning that the number of urgent referrals for suspected cancer exceeds the number of cases recorded in the CWT data as receiving a first treatment for cancer. Therefore, conversion rates, based on the number of urgent referrals for suspected cancers, usually relate to a much larger number of patients than detection rates, which are based on the number of cases recorded in the CWT data as receiving a first treatment for cancer. Consequently, the range and variation in conversion rates tends to be smaller than for detection rate, as there is less variation due to random chance when higher numbers of events are observed. Similarly, ranges in the rates tend to be smaller for NHS regions than for Cancer Alliances (CAs), and in turn for Integrated Care Boards (ICBs) and Sub-Integrated Care Boards (sub-ICBs).


Acknowledgements

This work uses data that has been provided by patients and collected by the NHS as part of their care and support. It is sourced from NHS England and collated, maintained and quality assured by the National Disease Registration Service, which is part of NHS England.


Results

All cancers

Range by geography level

Crude referral rates, conversion rates and detection rates vary by NHS Region, CA, ICB and sub-ICB (Figure 3), and have changed over time, from the year ending March 2010 to the year ending March 2023. For the year ending March 2023, crude referral rates for sub-ICBs range from 3,494 per 100,000 to 7,268 per 100,000, conversion rates for sub-ICBs range from 3.1% to 9.1% and detection rates for sub-ICBs range from 44.4% to 64.1%.

Figure 3: Range in crude referral rates, conversion rates and detection rates for all cancers by geography level, April 2009 to March 2010 and April 2022 to March 2023

Brain or central nervous system (CNS) cancers

Breast cancers

Range by geography level

Crude referral rates, conversion rates and detection rates vary by NHS Region, CA, ICB and sub-ICBs (Figure 8), and have changed over time, from the year ending March 2010 to the year ending March 2023. For the year ending March 2023, crude referral rates for sub-ICBs range from 697 per 100,000 to 1,573 per 100,000, conversion rates for sub-ICBs range from 3.0% to 9.7% and detection rates for sub-ICBs range from 30.7% to 75.3%.

Figure 8: Range in crude referral rates, conversion rates and detection rates for breast cancer by geography level, April 2009 to March 2010 and April 2022 to March 2023

Breast symptoms

Range by geography level

Crude referral rates and conversion rates vary by NHS Region, CA, ICB and sub-ICB (Figure 11), and have changed over time, from the year ending March 2010 to March 2023. For the year ending March 2023, crude referral rates for sub-ICBs range from 8 per 100,000 to 691 per 100,000 and conversion rates for sub-ICBs range from 0.0% to 9.0%.

Figure 11: Range in crude referral rates and conversion rates for breast symptoms by geography level, April 2009 to March 2010 and April 2022 to March 2023

Children’s cancers

Gynaecological

Haematological

Head and neck

Lower GI

Respiratory system (lung)

Range by geography level

Crude referral rates, conversion rates and detection rates vary by NHS Region, CA, ICB and sub-ICB (Figure 24), and have changed over time, from the year ending March 2010 to the year ending March 2023. For the year ending March 2023, crude referral rates for sub-ICBs range from 54 per 100,000 to 320 per 100,000, conversion rates for sub-ICBs range from 3.2% to 42.7% and detection rates for sub-ICBs range from 4.8% to 46.4%.

Figure 24: Range in crude referral rates, conversion rates and detection rates for respiratory system (lung) cancer by geography level, April 2009 to March 2010 and April 2022 to March 2023

Sarcoma

Skin

Range by geography level

Crude referral rates, conversion rates and detection rates vary by NHS Region, CA, ICB and sub-ICB (Figure 29), and have changed over time, from the year ending March 2010 to the year ending March 2023. For the year ending March 2023, crude referral rates for sub-ICBs range from 434 per 100,000 to 2,506 per 100,000, conversion rates for sub-ICBs range from 2.4% to 11.9% and detection rates for sub-ICBs range from 40.0% to 84.0%.

Figure 29: Range in crude referral rates, conversion rates and detection rates for skin cancer by geography level, April 2009 to March 2010 and April 2022 to March 2023

Urological cancers

Range by geography level

Crude referral rates, conversion rates and detection rates vary by NHS Region, CA, ICB and sub-ICB (Figure 32), and have changed over time, from the year ending March 2010 to the year ending March 2023. For the year ending March 2023, crude referral rates for sub-ICBs range from 336 per 100,000 to 796 per 100,000, conversion rates for sub-ICBs range from 9.0% to 24.5% and detection rates for sub-ICBs range from 49.4% to 84.1%.

Figure 32: Range in crude referral rates, conversion rates and detection rates for urological cancers by geography level, April 2009 to March 2010 and April 2022 to March 2023

Upper GI

Non-specific symptoms

Other cancers