Calibration Weights in NSDUH Overview
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Questions and Answers

What is addressed in section 7.1?

  • Sensitivity Analysis of Drug Use Estimates
  • Weight Adjustment Summary Statistics
  • Response Rates (correct)
  • Proportions of Extreme Values and Outwinsors

    • Which section provides a summary of the impact of calibration weights?

  • Evaluation of Calibration Weights (correct)
  • Slippage Rates
  • Weight Adjustment Summary Statistics
  • Sensitivity Analysis of Drug Use Estimates

    • What information is likely covered in section 7.3?

  • Evaluation of Calibration Weights
  • Slippage Rates (correct)
  • Response Rates
  • Weight Adjustment Summary Statistics

    • Which appendix details technical aspects of the Generalized Exponential Model?

    <p>Appendix A</p> Signup and view all the answers

    In which section would one find the derivation of poststratification control totals?

    <p>Appendix B</p> Signup and view all the answers

    Which model group is NOT mentioned in Appendix C?

    <p>Model Group 5: Northwest</p> Signup and view all the answers

    What does section 7.5 focus on regarding calibration weights?

    <p>Sensitivity Analysis of Drug Use Estimates</p> Signup and view all the answers

    What does Appendix E evaluate in relation to calibration weights?

    <p>Questionnaire Dwelling Unit-Level Proportions of Extreme Values and Outwinsors</p> Signup and view all the answers

    What model group is associated with covariates for 2011 NSDUH Pair Weights for the West region?

    <p>Model Group 4</p> Signup and view all the answers

    Which option correctly identifies the region associated with Model Group 3 for NSDUH dwelling unit weights?

    <p>South</p> Signup and view all the answers

    Which covariate is NOT mentioned for the 2011 NSDUH Questionnaire Dwelling Unit Weights?

    <p>res.pr.nr</p> Signup and view all the answers

    Which pair-level calibration modeling variable is defined under section H.1?

    <p>res.pr.ps</p> Signup and view all the answers

    What is the focus of covariates in the 2011 NSDUH for Model Group 4?

    <p>West region</p> Signup and view all the answers

    Which term identifies the covariate related to residential questionnaire weights in the South region?

    <p>res.qdu.nr</p> Signup and view all the answers

    Which model group addresses the Northeast region for Pair Weights in the 2011 NSDUH?

    <p>Model Group 1</p> Signup and view all the answers

    Which option indicates a model group with a focus on dwelling unit weights for the South region?

    <p>Model Group 3</p> Signup and view all the answers

    What is the minimum size required for extreme weight domains to adequately define extreme values?

    <p>30</p> Signup and view all the answers

    What can reduce the bias introduced by extreme value treatment in estimates?

    <p>Performing calibration controls</p> Signup and view all the answers

    Which factors affect the selection probabilities of units in the sample for extreme weight domains?

    <p>Demographic factors like State and age-specific sampling rates</p> Signup and view all the answers

    Why is cross-classification challenging when defining extreme weight domains?

    <p>It leads to too many domains with insufficient observations.</p> Signup and view all the answers

    For pair data, which approach is considered more straightforward in defining extreme weight domains?

    <p>Employing State by age group classification</p> Signup and view all the answers

    What was the classification system used for defining extreme weight domains in the 2011 survey?

    <p>Cross-classification of State, pair age, and number of persons aged 12 to 25 in a household</p> Signup and view all the answers

    What concern did the circus statistician express regarding the estimate based on weighing Sambo, the elephant?

    <p>The estimate could be biased due to purposive selection.</p> Signup and view all the answers

    What is the primary characteristic required of extreme weight domains to avoid a mix of designs?

    <p>Similar sample selection probabilities</p> Signup and view all the answers

    What is the purpose of extreme value treatment in the generalized exponential model (GEM)?

    <p>To prevent the adjusted weights from crossing the standard interval boundaries.</p> Signup and view all the answers

    What is the narrower interval defined in the GEM modeling used for NSDUH in 2011?

    <p>Median ± 2.5 × IQR</p> Signup and view all the answers

    How is the variable mk defined for high extreme weights in the GEM model?

    <p>The minimum of bk(u) / wk and one.</p> Signup and view all the answers

    When classifying sampling weights, what defines a weight as extreme?

    <p>If it exceeds the interval defined as median ± 3 × IQR.</p> Signup and view all the answers

    What does the product mk represent for nonextreme weights?

    <p>The value of one.</p> Signup and view all the answers

    What is a characteristic of higher extreme weights in the GEM framework?

    <p>They have smaller mk values.</p> Signup and view all the answers

    Which measure is used for Segment-Combined Median Rent and Housing Value?

    <p>Composite measure of rent, housing value, and owner-occupancy percentage.</p> Signup and view all the answers

    What is the role of the parameters L1, U1, L2, U2, L3, and U3 in GEM?

    <p>To manage boundary parameters for different categories of extreme weights.</p> Signup and view all the answers

    What happens when the scaling factor λ is set to 0?

    <p>The selection scheme follows that of Case I</p> Signup and view all the answers

    If the sum of the adjusted selection probabilities S' is less than 2, what action is taken?

    <p>Three dummy persons are added to the DU</p> Signup and view all the answers

    What does the factor Fs represent in the context of person selection probabilities?

    <p>The scaling adjustment factor for selection probabilities</p> Signup and view all the answers

    Which formula calculates the pairwise selection probabilities in Brewer's method?

    <p>Ph′(ij) = (Ph′(i) Ph′(j)) / (1 + (1 - Ph′(i))(1 - Ph′(j)))</p> Signup and view all the answers

    What affects the individual selection probabilities P'h(i) and P'h(j)?

    <p>The age category of the individual</p> Signup and view all the answers

    How is the value of K' determined?

    <p>K' is calculated based on the selection probabilities of the individuals</p> Signup and view all the answers

    What is the condition for selecting a pair using Brewer's method?

    <p>R must be less than or equal to 1/Fs</p> Signup and view all the answers

    In what scenario would dummy persons be required?

    <p>If the adjusted sum S' is less than 2</p> Signup and view all the answers

    What age range corresponds to level 3 in the Ageb variable?

    <p>26-34</p> Signup and view all the answers

    In the context of Group Quarter Indicator, which category represents college dorms?

    <p>College Dorm</p> Signup and view all the answers

    Which variable represents the racial demographic of the householder?

    <p>Race/Ethnicity of Householder</p> Signup and view all the answers

    What percentage category corresponds to level 2 in the Percentage of Owner-Occupied Dwelling Units?

    <p>10-&gt;50%</p> Signup and view all the answers

    What does the Population Density variable's second level signify?

    <p>MSA Less than 1,000,000</p> Signup and view all the answers

    Which option correctly identifies a level of Household Type?

    <p>12-17, 18-25, 26+</p> Signup and view all the answers

    What race is classified as level 2 under Race (5 Levels)?

    <p>Black or African American</p> Signup and view all the answers

    What is the highest percentage range for segments categorized as Hispanic or Latino?

    <p>50-100%</p> Signup and view all the answers

    Which state is NOT listed in Model Group 1?

    <p>Texas</p> Signup and view all the answers

    Which level of Segment-Combined Median Rent and Housing Value corresponds to the first quintile?

    <p>First Quintile</p> Signup and view all the answers

    Study Notes

    2011 National Survey on Drug Use and Health Questionnaire Dwelling Unit-Level and Person Pair-Level Sampling Weight Calibration

    • Prepared for the 2011 Methodological Resource Book
    • RTI Project No. 0211838.207.005
    • Contract No. HHSS283200800004C
    • Deliverable No. 39
    • Project Director: Thomas G. Virag
    • Authors: Matthew Westlake, Patrick Chen, Harper Gordek
    • Prepared for: Substance Abuse and Mental Health Services Administration, Rockville, Maryland 20857
    • Prepared by: RTI International, Research Triangle Park, North Carolina 27709
    • Date: January 2013

    Disclaimer

    • SAMHSA provides links to other internet sites as a service to users; not responsible for availability or content of external sites
    • SAMHSA, employees, or contractors do not endorse, warrant, or guarantee the products, services, or information described or offered at these sites.
    • Any reference to a commercial product, process, or service does not constitute an endorsement or recommendation by SAMHSA, employees, or contractors.
    • For documents available from this server, the U.S. government does not warrant or assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed.

    Preface

    • This report documents the method used to calibrate weights for the 2011 National Survey on Drug Use and Health (NSDUH)
    • High weights can occur due to small pair selection probabilities in calibration exercise.
    • Extreme value (EV) control in weights is needed, but over-treatment can introduce bias.
    • A hierarchy of domains was defined using pair age and number of persons aged 12-25 in the household, as well as state and clusters of states.
    • Ratio adjustment (post-stratification) is performed to control for extreme values, following Hajek's suggestion.
    • Data from a large screener sample was used to estimate poststratification controls.
    • Multiplicities in person-level parameters (drug-related behaviors within households) required division by multiplicity factors when producing pair weights.
    • Imputation was necessary for deriving pair relationships, multiplicity factors, and household totals to account for missing data.

    Table of Contents

    • Provides a detailed outline of the document, listing each chapter and the corresponding page number with the specific topics contained within each chapter.

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    Description

    This quiz explores various sections and appendices related to calibration weights in the NSDUH study. It addresses the impact of weights, model groups, and key covariates associated with the 2011 NSDUH data. Participants will gain insights into specific technical aspects and the relevance of different models.

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