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The study targets U.S. civilian non-institutionalized adults aged 18+ and extends traditional HINTS topics with FDA-focused measures of risk perceptions and tobacco product harm and claims. The methodology details sampling frame construction, stratification, mail-based data collection, scanning, cleaning, editing, imputation, weighting, variance estimation, and response-rate calculations.","Health Information National Trends Survey 4 (HINTS 4)  \nHINTS-FDA2 Methodology Report  \nJuly 2017  \nPrepared for  \nNational Cancer Institute 9609 Medical Center Drive Bethesda, MD 20892-9760  \nPrepared by  \nWestat  \n1600 Research Boulevard Rockville, MD 20850  \n Table of Contents   \nChapters  Page  \n1 HINTS – FDA2 Overview ............................................................................... 1  \n2 Sample Selection ................................................................................................. 2  \n2.1 Sampling Frame..................................................................................... 2  \n2.2 Stratification ........................................................................................... 3  \n2.3 Selection of Address Sample ............................................................... 3  \n2.4 Within-Household Sample Selection ................................................. 4  \n3 Data Collection ................................................................................................... 5  \n3.1 Mailing Protocol .................................................................................... 5  \n3.2 In-bound Telephone Calls ................................................................... 6  \n3.3 Incoming Questionnaires..................................................................... 7  \n4 Data Management............................................................................................... 8  \n4.1 Scanning ................................................................................................. 9  \n4.2 Data Cleaning and Editing................................................................... 10  \n4.3 Imputation.............................................................................................. 10  \n4.4 Determination of the Number of Household Adults...................... 11  \n4.5 Survey Eligibility.................................................................................... 11  \n4.6 Codebook Development...................................................................... 13  \n5 Weighting and Variance Estimation ................................................................ 13  \n5.1 Household Base Weights ..................................................................... 14  \n5.2 Household Nonresponse Adjustment ............................................... 14  \n5.3 Initial Person-Level Weights ............................................................... 16  \n5.4 Calibration Adjustments ...................................................................... 16  \n5.5 Replicate Variance Estimation ............................................................ 18  \n6 Response Rates ................................................................................................... 20  \n6.1 Overall Response Rate ......................................................................... 20  \n6.2 Impact of Stratification on Smoking Outcomes ............................... 20  \nReferences ............................................................................................................ 23  \nContents (continued)  \nAppendixes  Page  \nA Cover Letters in English .................................................................................... A-1  \nB Cover Letters in Spanish.................................................................................... B-1  \nC Frequently Asked Questions (FAQs)– English and Spanish ...................... C-1  \nD Variable Values and Data Editing Procedures ............................................... D-1  \nTables  \n2-1 Smoking rates and strata .................................................................................... 3  \n2-2 HINTS-FDA2 sample summary by sampling stratum ................................. 4  \n3-1 Mailing protocol.................................................................................................. 6  \n3-2 Number of packets per mailing .....","cbCaiktpOPAV0QRX","https://ap.wps.com/l/cbCaiktpOPAV0QRX","pdf",595446,"English","en",105,"# HINTS – FDA2 Overview\n## Sample Selection\n## Data Collection\n## Data Management\n## Weighting and Variance Estimation\n## Response Rates\n# References\n# Appendixes","[{\"question\":\"What is the HINTS-FDA2 study and who does it target?\",\"answer\":\"HINTS-FDA2 is a follow-on survey to the 2015 HINTS-FDA data collection. 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