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2007 Census Test Design Dr. Jaime Collins Field Design, 2011 Census.

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Presentation on theme: "2007 Census Test Design Dr. Jaime Collins Field Design, 2011 Census."— Presentation transcript:

1 2007 Census Test Design Dr. Jaime Collins Field Design, 2011 Census

2 1. Research Objectives 2. General details of the design 3. Local Authority (LA) selection criteria 4. ED (Enumeration District) selection per LA 5. ED selection by Enumeration Targeting Categorisation (ETC) 6. Census Test Evaluation Survey (CTES) 7. Questions Overview

3 3 key objectives: 1. Delivery method: post-out vs. hand-delivery 2. Income: Income questions vs. no income questions questions 3. Outsourcing field staff recruitment, training and pay and pay Research objectives

4 Date – Sunday 13 May 2007 *Reduced Sample – just over 100,000 households within 515 EDs within 5 LAs. 3 delivery attempts (hand-delivery only) and 3 follow-up attempts and reminder card 4 Treatment groups assigned at ED level – delivery method and income factors crossed. General details of the design 1

5 General details of the design 2 Balancing EDs in each treatment group balanced within each LA.EDs in each treatment group balanced within each LA. EDs and households balanced in each treatment group and ETC stratum,EDs and households balanced in each treatment group and ETC stratum, -i.e.5,000 households for each treatment group in each ETC strata: (5,000 x 4) x 5 = 100,000 (5,000 x 4) x 5 = 100,000 Power - Delivery method 6.7% within ETC stratum - Income 3% overall difference - Income 3% overall difference

6 LAs selected: Bath and North-East Somerset, Camden, Carmarthenshire, Liverpool and Stoke on Trent Key selection criteria: a ‘representative’ sample of LAs found withina ‘representative’ sample of LAs found within England and Wales; England and Wales; one LA in Wales;one LA in Wales; at least one LA that is enthusiastic for the Test;at least one LA that is enthusiastic for the Test; at least one LA with rapid population movement; andat least one LA with rapid population movement; and at least one LA with rapid development.at least one LA with rapid development. LA sample selection

7 ED selection per LA BathCamCarmLiverStoke Selected EDs Percent of LA 13%29%11%19%14% Table 1: Distribution of EDs per LA

8 ED sample selection ED selection 499 (97%) EDs randomly selected499 (97%) EDs randomly selected 16 (3%) EDs purposively selected to take into account specific operational and/or practical issues16 (3%) EDs purposively selected to take into account specific operational and/or practical issues * Original sample EDs. 48 randomly selected EDs dropped following Address Checking (8 from ETCs1-3, 12 from ETCs 4-5). 1 further ED dropped during data collection.

9 ED selection by ETC Table 2: Distribution of EDs by ETC ETCAll Eng and Wales EDs 2007 Test EDs PercFreqPerc 1 v. easy-to-count60%10019% 220%9218% 310%9619% 48%11122% 5 v. hard-to-count2%11623%

10 The Census Test Evaluation Survey 1 CAPI Survey carried out in June-July key objectives: Measure coverage Understanding/interpretation of new questions Reasons for non-response Sample: Sample of addresses within 87 EDs -25/05/07 early respondent sample -26/06/07 late respondent and non-respondent sample

11 The Census Test Evaluation Survey 2 CTES response Contact attemptAgreed 2007 Test response group Freq Perc Early response % Late response % No response % Table 3: CTES response rates by 2007 Test response

12 The Census Test Evaluation Survey 3 CTES 2007 Test respondent questions: 1.Coverage Captured 2007 Test data preloaded. Established usual residents/visitors in CTES and probed differences 2.Questionnaire design and content 3.Re-asked questions (language, qualifications and income) 4.Delivery ( appearance and condition of questionnaire package) 5.Publicity (Advance card, information leaflet, follow-up card) 6.Future response method (internet) CTES 2007 Test non-respondent questions: (Reasons for non-response, non-respondent characteristics, internet, advance card).

13 Any questions? Thank you

14 Appendix 1 Table A1: EDs by ETC and LA ETCCamLiverStokeBathCarm Total Total

15 Appendix 2 Table A2: Removed EDs by ETC and LA ETCCamLiverStokeBathCarm Total Total

16 Appendix 3 Table A3: CTES 2007 Test respondents by ETC and LA ETCCamLiverStokeBathCarm Total Total ,223

17 Appendix 4 Table A4: CTES 2007 Test non-respondents by ETC and LA ETCCamLiverStokeBathCarm Total Total

18 Appendix 5 VariableNumeratorDenominator Age Persons years (2001 Census) All persons (2001 Census) Ethnicity HHs with Black or Asian persons (2001 Census) All HHs (2001 Census) HH type Rented and part-rented HHs (2001 Census) All HHs (2001 Census) HH tenure Rented and part-rented HHs (2001 Census) All HHs (2001 Census) Income JSA and income support claimants (DWP data) Persons years (2001 Census) Table A5: Variables used in ETC calculation


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