Sampling

The Population Sampled

The sample for data collection is designed to be representative of the adult population aged 16+ of Great Britain.

Overview of the PAMCo Sample

PAMCo sample was selected from completed interviews from the Barb Establishment Survey.

Across the year and all regions, 86% of Barb participants were eligible for PAMCo selection. Those not available included:

Any Barb ES interviews obtained via online or telephone
Any Barb ES interviews that were obtained in a multi-occupancy house and not from the first household within that address
Any household that expresses an interest in the Barb TV panel when invited to take part

For all eligible households a PAMCo Selection Matrix was used to determine in which homes the interviewer should attempt a PAMCo interview (either CAPI or online) with the Barb informant. This matrix was updated for each monthly fieldwork period to account for the monthly changes to the Barb recruitment targets, and refined if necessary during the fieldwork period to account for changes in PAMCo response rates.

Reference Points

The area groupings used and the target number of Sampling Points selected were as follows:

England and Wales

Area Groupings	Government Office Region	ISBA Area	Points per year
1	South West	South West	40
2	South West	Southern	16
3	South East	Southern	36
4	South East	Southern	20
5	South East	Southern	24
6	South East	Southern	52
7	South East	London	32
8	East of England	London	44
9	Greater London	London	24
10	Greater London	London	64
11	Greater London	London	40
12	Greater London	London	52
13	East of England	East of England	28
14	East Midlands	East of England	12
15	South East	London	24
16	East of England	East of England	20
17	East of England	East of England	28
18	South East	Midlands	24
19	South West	Midlands	12
20	West Midlands	Midlands	40
21	West Midlands	Midlands	24
22	Greater London	London	32
23	West Midlands	Midlands	12
24	West Midlands	Midlands	16
25	West Midlands	Midlands	20
26	East Midlands	Midlands	20
27	East Midlands	Midlands	16
28	East Midlands	Midlands	20
29	Wales	Wales and the West	8
30	Wales	Wales and the West	20
31	Wales	Wales and the West	24
32	North West	Border	8
33	South West	Wales and the West	16
34	South West	Wales and the West	28
35	Yorkshire and the Humber	Yorkshire	44
36	Yorkshire and the Humber	Yorkshire	28
37	Yorkshire and the Humber	Yorkshire	24
38	East Midlands	Yorkshire	24
39	Wales	Lancashire	8
40	North West	Lancashire	32

41	North West	Lancashire	28
42	North West	Lancashire	16
43	North West	Lancashire	28
44	North West	Lancashire	28
45	Yorkshire and the Humber	North East	12
46	North East	North East	28
47	North East	North East	12
48	North East	North East	12

Scotland

Area Groupings	Area Names	Points per year
49	Aberdeen	8
50	Dundee	4
51	Edinburgh	20
52	Strathclyde urban	52
53	Strathclyde rural	20
54	Lothian	12
55	Central	8
56	Fife	12
57	Other Tayside	8
58	Other Grampian	12
59	Highland	8
60	Scottish Borders	8

Sampling

Overview of the PAMCo Sample

Reference Points

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