Table 2 Participant demographics and characteristics

Age

Mean (range) years

64.71

(61–69)

66.57

(63–72)

n/a

67.09

(61–74)

Gender

Male

3

4

5

6

Female

4

3

5

5

Highest level of education

n/a

Bachelors ‘degree/masters/PhD

6

6

3

Further education but not degree

1

1

3

Finished school at or before age fifteen

2

Completed A-levels or equivalent

1

CSEs, O-levels or equivalent

1

Missing

1

Employment status

n/a

Employed full-time

1

2

Employed part-time

1

2

Retired

5

5

8

Missing

1

Occupation

n/a

n/a

n/a

Community pharmacist

2

Consultant gastroenterologist

3

General practitioner

2

Specialist screening practitioner

3

University Health Board

n/a

n/a

n/a

Aneurin Bevan

1

Cardiff & Vale

7

Cwm Taff

1

Hywel Da

1

Home living arrangements

n/a

Own outright

7

7

9

Rent from local authority/housing association

1

Missing

1

Aspirin use

n/a

Yes

1

5

No

7

6

5

Missing

1

Area

South Wales

7

7

10

6

North Wales

5