Title page
Contents
Executive Summary 4
Chapter 1. Introduction 11
1.1. Overview of NHES:2019 Methodological Experiments 11
1.2. NHES:2019 Methodology and Key Outcomes 15
Chapter 2. Leveraging Response Mode Assignment to Increase Response Rates 21
2.1. Choice-Plus Experiment 22
2.2. Modeled-Mode Experiment 31
Chapter 3. Refining Web-Push Contact Procedures 40
3.1. Advance Mailings Experiment 40
3.2. Pressure-Sealed Envelope Versus Reminder Postcard 46
3.3. FedEx Timing Experiment 49
Chapter 4. Attracting Response From Specific Demographic Subgroups 61
4.1. Opt-Out Screener Materials Experiment 61
4.2. Targeted Spanish-Speaking-Household Materials Experiment 68
Chapter 5. Summary and Conclusions 80
5.1. Leveraging Response Mode Assignment to Increase Response Rates 81
5.2. Refining Web-Push Contact Procedures 82
5.3. Attracting Response From Specific Demographic Subgroups 85
References 88
Figure 2.1.1. Final screener response rate and percentage point gain in screener response rate, by experimental condition and response timing: 2019 24
Figure 2.1.2. Screener response rate, by experimental condition and response mode: 2019 26
Figure 2.1.3. Topical response rate, by questionnaire and experimental condition: 2019 29
Figure 2.1.4. Overall response rate, by questionnaire and experimental condition: 2019 30
Figure 2.2.1. Final screener response rate and percentage point gain in screener response rate, by experimental condition and response timing: 2019 37
Figure 2.2.2. Overall response rate, by questionnaire and experimental condition: 2019 39
Figure 3.1.1. Final screener response rate and percentage point gain in screener response rate after each mailing, by advance mailing condition and mailing: 2019 42
Figure 3.1.2. Screener response rate, by advance mailing condition and response mode: 2019 44
Figure 3.1.3. Overall response rate, by questionnaire and advance mailing condition: 2019 46
Figure 3.2.1. Screener response rate after reminder mailing and percentage point gain in screener response rate after each mailing, by reminder condition: 2019 48
Figure 3.3.1. Final screener response rate and percentage point gain in screener response rate after each mailing, by FedEx condition and mailing: 2019 55
Figure 3.3.2. Screener response rate, by FedEx condition and response mode: 2019 56
Figure 3.3.3. Overall response rate, by questionnaire and FedEx condition: 2019 58
Figure 4.1.1. Final screener response rate and percentage point gain in screener response rate after each mailing, by whether household was flagged... 64
Figure 4.1.2. Screener response rate by whether household was flagged as having children, opt-out condition, and response mode: 2019 65
Figure 4.1.3. Percentage of screener respondents who reported at least one child eligible for the topical surveys, by whether household was flagged... 67
Figure 4.2.1. Final screener response rate and percentage point gain in screener response rate after each mailing, by likely-Spanish-speaking classification,... 73
Figure 4.2.2. Screener response rate, by likely-Spanish-speaking classification, targeted materials condition, and response mode: 2019 75
Figure 4.2.3. Observed and self-reported Spanish-speaking status, by likely-Spanish-speaking classification and experimental condition: 2019 79
Exhibits
Exhibit 1.1. Overview of NHES:2019 methodological goals and experimental conditions 13
Exhibit 1.2. Allocation of NHES:2019 sample to experimental conditions 14
Exhibit 2.1. Choice-plus experiment key facts 23
Exhibit 2.2. Modeled-mode experiment key facts 32
Exhibit 2.3. Auxiliary variables included in model used to identify paper-sensitive households in NHES:2019 modeled-mode experiment 34
Exhibit 2.4. Assigned screener mailing protocol, by experimental condition and paper-sensitivity classification 35
Exhibit 3.1. Advance mailings experiment key facts 41
Exhibit 3.2. Pressure-sealed envelope versus reminder postcard analysis key facts 47
Exhibit 3.3. FedEx timing experiment key facts 50
Exhibit 3.4. Auxiliary variables included in the response propensity and predicted FedEx cost models 52
Exhibit 3.5. Timing of FedEx mailing, by experimental condition and FedEx-priority assignment 53
Exhibit 3.6. Relative cost per response, by data collection phase and FedEx timing condition: 2019 59
Exhibit 4.1. Opt-out screener materials experiment key facts 62
Exhibit 4.2. Targeted Spanish-speaking-household materials experiment key facts 68
Exhibit 4.3. Icons used on materials sent to likely-Spanish-speaking households in targeted materials condition 71
Exhibit 4.4. Assigned mailing materials, by experimental condition and likely-Spanish-speaking classification 72
Exhibit 5.1. Screener, topical, and overall response rate, by experimental condition 80