Screening Division of Public Health Wales / WAAASP Annual Statistical Report
2014/15
Screening Division of Public Health Wales
Wales Abdominal Aortic Aneurysm Screening Programme
Annual Statistical Report
2013/14
Author:Screening DivisionInformatics Team
Date:January 2015 / Version:1
Publication/ Distribution:
  • WAAASP Programme Board
  • Stakeholders via Screening for Life Internet site
  • NHS Wales via links on Screening Professionals site
  • Public Health Walesvia web story and links to screening sites

Purpose and Summary of Document:
This report is a detailed summary of information on work undertaken by the Wales Abdominal Aortic Aneurysm Screening Programmefor the partial year from May 2013 to the end of March 2014
For more information about this report contact:
Helen Beer,Senior Information Manager and Research Specialist,
Screening Division of Public Health Wales,
18 Cathedral Road, Cardiff, CF11 9LJ
Tel: 029 2078 7803 WHTN: 0896 7820 or 7803
Fax: 029 2078 7900
Email:

This report is a detailed summary of information on work undertaken by the Wales Abdominal Aortic Aneurysm Screening Programme for the year from April 2014 to the end of March 2015.

For more information about this report contact:

Helen Clayton,Interim Head of Service, Information and Data,

Screening Division of Public Health Wales,

18 Cathedral Road, Cardiff, CF11 9LJ

Tel: 029 2078 7803 WHTN: 0896 7820 or 7803

Fax: 029 2078 7900

Email:

Date: January 2016 / Version: 1 / Page: 1 of 12
Screening Division of Public Health Wales / WAAASP Annual Statistical Report
2014/15

Contents

1Introduction

2Headline statistics

3Data

3.1Uptake

3.2Abdominal Aortic Aneurysms detected

3.3AAA Surveillance Uptake

3.4Referral to Multi-Disciplinary Team

4Definitions

Table 1a:AAA Screening uptake by Health Board of residence...... 6

Graph 1a: AAA Screening uptake by Health Board of residence...... 7

Table 1b:AAA Screening uptake by Deprivation Quintile and Health Board of residence...... 8

Graph 1b: AAA Screening uptake by Deprivation Quintile and Health Board of residence...... 9

Table 2:Number of those screened that have an AAA(≥3cm) detected by Health Board...... 10

1Introduction

This is the second annual statistical report published by the Wales Abdominal Aortic Aneurysm Screening Programme (WAAASP). The programme started in May 2013,the previous report was not a complete financial year of screening.

WAAASP launched in May 2013 and aims to halve AAA related mortality by 2025 in the eligible population through a systematic screening programme for 65 year old men resident in Wales.Since 1 May 2015 men over 65 can contact the local screening offices to request an AAA screening scan.

Research evidence has shown that a high quality screening programme for abdominal aortic aneurysm (AAA) can reduce deaths from ruptured aortic aneurysm by around 50% in men aged over 65[1]. In February 2007, the National Screening Committee approved the introduction of screening men aged 65 for AAA using abdominal ultrasound scanning provided:

  • Invited men were given clear information about the risks of elective surgery; and
  • Vascular networks were in place to treat individuals referred from screening.

Key messages about the programme

  • Screening reduces your risk of dying from an AAA.
  • An AAA is a swelling of the aorta, the main blood vessel that supplies blood to the body. There is a risk that an AAA may split or rupture.
  • Men aged 65 are invited for a one-off ultrasound screening test.
  • There is a high risk of dying from a ruptured AAA. Finding an AAA early gives the best chance of treatment and survival.
  • AAA screening is a free NHS test carried out in community clinics.
  • The screening test is not 100% accurate and surgery for AAA carries risks.
  • Taking part in AAA screening is your choice. Read the information leaflet carefully to help you make your decision.

Programme delivery

The Screening Division of Public Health Wales is responsible for managing, delivering and quality assuring the programme. The programme employs a Head of Programme, QA Imaging Lead, QA Vascular Surgical Lead and All-Wales Administration Coordinator with support from a secretarial and administration team.

Although an all-Wales programme, there is regional coordination by three regional coordinators and a team of 16 screeners.

Screening pathway

  • 65 year old men resident in Wales and registered with a GP will be invited for a one-off ultrasound scan to check whether they have an AAA
  • The test involves a simple scan of the abdominal aorta, measuring the widest part of the aorta, and saves a minimum of two images per scan
  • Ultrasound scanning is performed in 68 community clinics throughout Wales including community hospitals, health clinics, primary resource centres and GP practices
  • Men with an abdominal aortic diameter of less than 3cm are discharged from the programme
  • Men in the surveillance programme are offered:
  • small AAA (3 - 4.4cm) an annual scan
  • medium AAA (4.5 - 5.4cm) a quarterly scan
  • a phone appointment with the AAA surveillance nurse to discuss the result and its health implications
  • encouragement to make an appointment with their GP for lifestyle and health advice, BP monitoring and best medical therapy
  • Men with large AAA of 5.5cm or more (or a growth of 1cm or more in 12 months)are referred to the regional elective Vascular Network Multiprofessional team (Multidisciplinary Team or MDT).
  • Men with a non-visualised aorta are offered a second appointment and referred to a medical imaging department if the second appointment is unsuccessful.

More information is available at

2Headline Statistics

This report covers thetime period from April 2014 to March 2015.

  • WAAASP uptake (defined as receiving a scan within 4 months of their original invitation) for those participants invited between April 2014 and March 2015 was 74.4%, ranging from 71.5% in Powys Teaching Health Board to 76.6% in Hywel Dda University Health Board.
  • Uptake figures are higher in those men living in the least deprived areas (79.5%) compared to the most deprived areas (67.7%).

In April 2014 – March 2015:

  • 20,685 eligible men were invited by the programme in this time period.
  • 16,243men attended for their first WAAASP scan andhad a definitive scan result. Of these, 208AAA(1.3%) were detected by the screening programme.
  • 277 surveillance appointments were attended and 257 (92.8%) were seen within standard (medium AAA on quarterly surveillance within 11 to 15 weeks, small AAA on annual surveillance within 50 to 56 weeks of their previous successful scan).
  • 31 men were scanned and needed a referral to the elective vascular network MDT. Most men (96.8%) were referred within two working days of the scan being taken.
  • 27 men had open repair or EVAR surgery, 23 (85.2%) of these had their surgery completed within 4 or 8 weeks of referral received depending on size of AAA detected.

Date: January 2016 / Version: 1 / Page: 1 of 12
Screening Division of Public Health Wales / WAAASP Annual Statistical Report
2014/15

3Data

3.1Uptake

Table 1a- AAA Screening uptake by Health Board of residence

Health Board / Eligible / Tested / % Uptake
Abertawe Bro Morgannwg UHB / 3361 / 2483 / 73.9
Aneurin Bevan UHB / 3899 / 2914 / 74.7
Betsi Cadwaladr UHB / 4471 / 3307 / 74.0
Cardiff and Vale UHB / 2934 / 2161 / 73.7
Cwm Taf UHB / 1868 / 1405 / 75.2
Hywel Dda UHB / 2822 / 2161 / 76.6
Powys Teaching HB / 1154 / 825 / 71.5
Unknown / 176 / 124 / 70.5
All Wales / 20685 / 15380 / 74.4

Note: uptake stated (of those eligible and invited, number tested within 4 months)

Graph 1a: AAA Screening uptake by Health Board of residence


Table 1b: AAA Screening uptake by Deprivation Quintile and Health Board of residence(%)

Health Board / Q1 – least deprived / Q2 / Q3 / Q4 / Q5 – most deprived / Unknown / Total
Abertawe Bro Morgannwg UHB / 79.1 / 76.0 / 73.9 / 74.2 / 65.9 / 0.0 / 73.9
Aneurin Bevan UHB / 78.5 / 76.4 / 75.5 / 73.6 / 70.8 / 0.0 / 74.7
Betsi Cadwaladr UHB / 80.7 / 74.6 / 74.2 / 70.6 / 61.7 / 0.0 / 74.0
Cardiff and Vale UHB / 79.6 / 76.0 / 67.2 / 71.2 / 61.8 / 0.0 / 73.7
Cwm Taf UHB / 79.9 / 81.3 / 75.2 / 74.3 / 72.9 / 0.0 / 75.2
Hywel Dda UHB / 78.6 / 77.4 / 76.0 / 76.0 / 75.5 / 0.0 / 76.6
Powys Teaching HB / 76.3 / 69.7 / 73.3 / 72.1 / 75.0 / 0.0 / 71.5
Unknown / 0.0 / 0.0 / 0.0 / 0.0 / 0.0 / 70.5 / 70.5
All Wales / 79.5 / 75.2 / 74.4 / 73.3 / 67.7 / 70.5 / 74.4

Graph 1b: AAA Screening uptake by Deprivation Quintile and Health Board of residence


3.2Abdominal Aortic Aneurysms detected

Table 2:Number of those screened that have an AAA(≥3cm) detected by Health Board

Health Board / Attended / AAA Total / Detection Rate (%)
Abertawe Bro Morgannwg UHB / 2669 / 39 / 1.5
Aneurin Bevan UHB / 2997 / 46 / 1.5
Betsi Cadwaladr UHB / 3549 / 37 / 1.0
Cardiff and Vale UHB / 2230 / 24 / 1.1
Cwm Taf UHB / 1493 / 25 / 1.7
Hywel Dda UHB / 2271 / 31 / 1.4
Powys Teaching HB / 907 / 5 / 0.6
Unknown / 127 / 1 / 0.8
All Wales / 16243 / 208 / 1.3

Note: Men with AAA (≥3cm) detected only counted on first definitive scan not surveillance scans. Non visualised is not a definitive scan result.

Date: January 2016 / Version: 1 / Page: 1 of 12
Screening Division of Public Health Wales / WAAASP Annual Statistical Report
2014/15

3.3AAA Surveillance Uptake

The surveillance uptake for this time period 2014-15, includes men with a medium AAAdetected that are invited for quarterly surveillance and those men with a small AAA detected that are invited for annual surveillance.

During 2014-15 there were 277 attended surveillance appointments and 257 (92.8%) were seen within standard (medium AAA on quarterly surveillance within 11 to 15 weeks, small AAA on annual surveillance within 50 to 56 weeks of their previous successful scan).

3.4Referral to Multi-Disciplinary Team

During 2014-1531 men were scanned and needed a referral to the elective vascular network MDT, this does not include referrals to on call vascular services (i.e. those with a very large AAA detected). Most men (96.8%) were referred within two working days of the scan being taken.

27 men had open repair or EVAR surgery, 23 (85.2%) of these had their surgery completed within 4 or 8 weeks of referral received, depending on size of AAA detected.

Date: January 2016 / Version: 1 / Page: 1 of 12
Screening Division of Public Health Wales / WAAASP Annual Statistical Report
2014/15

4Definitions

This section provides further detail on the calculations used in this report.

Eligible

For uptake calculations, eligible men were those resident in Wales aged 65 years and were invited in the time period. Men who were registered manually (such as self referrals) are excluded.

Uptake

Men were counted as having responded to their invitation if they attended for their specified invitation within four months of original invitation.

Deprivation

Deprivation quintiles were assigned using the Welsh Index of Multiple Deprivation (WIMD) 2014, measured at lower super output area (LSOA) level. LSOAs are ranked into quintiles at an all-Wales level so they can be compared between health boards. This means that there will not be an equal proportion of people in each quintile when you look at each health board e.g. in Monmouthshire, 40% of the population live in the least deprived quintile of Wales, but no areas fall into the Welsh most deprived quintile.

Health Board

This is health board of residence.

Result

A definitive scan result excludes those where the final outcome is that the abdominal aorta could not be visualised.

Date: January 2016 / Version: 1 / Page: 1 of 12

[1]Ashton HA, Buxton MJ, Day NE, Kim LG, Marteau TM, Scott RAP et al. (2002) Multicentre Aneurysm Screening Study Group. The Multicentre Aneurysm Screening Study (MASS) into the effect of abdominal aortic aneurysm screening on mortality in men: a randomised controlled trial. Lancet;360 (9345):1531-9