Questionnaire Dwelling Unit-Level and Person Pair-Level Sampling ...

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• Missing items in the respondent questionnaire led to imputation for deriving pair relationships, multiplicity factors, and household counts for Hajek adjustments. The general method of predictive mean neighborhood (PMN) was used for this purpose with suitable modifications. This task required enduring efforts by a dedicated team consisting of Patrick Chen, Matt Westlake, Jeff Laufenberg, and Harper Gordek for weight calibration and Kortnee Barnett- Walker and Elizabeth Copello for imputation. The calibration task described in this document has been in place, with minor modifications, since the 1999 version of NSDUH, which was then called the National Household Survey on Drug Abuse (NHSDA). 1 Results from this calibration applied to an earlier survey year were presented at the 2001 Joint Statistical Meetings. The procedures described in the proceedings papers from these presentations can serve as useful supplemental reference material (Chromy and Singh [2001] on estimation in the presence of multiplicities and extreme weights; Singh, Grau, and Folsom [2001] on the use of PMN; and Penne, Chen, and Singh [2001] on GEM calibration of pair weights). The experience of using GEM with person weights is described in an earlier proceedings paper (Chen, Penne, & Singh, 2000). This work was completed for the Substance Abuse and Mental Health Services Administration (SAMHSA), Office of Applied Studies (OAS), by RTI International (a trade name of Research Triangle Institute), Research Triangle Park, North Carolina, under Contract No. 283-2004-00022. The authors would like to take this opportunity to thank a number of individuals for useful discussions and suggestions: Doug Wright, Joe Gfroerer, and Art Hughes of SAMHSA and Jim Chromy and Ralph Folsom of RTI. NSDUH Weighting Team Ralph Folsom, Senior Advisor Research Triangle Park, NC 1 The National Household Survey on Drug Abuse (NHSDA) was renamed the National Survey on Drug Use and Health (NSDUH) in the 2002 survey year. iv
Table of Contents Chapter Page Preface ............................................................................................................................................iii 1. Introduction......................................................................................................................... 1 2. Questionnaire Dwelling Unit and Pair Selection Probabilities........................................... 7 2.1 Pair Selection Probability ....................................................................................... 7 2.2 Questionnaire Dwelling Unit Selection Probability ............................................... 9 3. Brief Description of the Generalized Exponential Model ................................................ 13 4. Predictor Variables for the Questionnaire Dwelling Unit and Pair Weight Calibration via the Generalized Exponential Model......................................................... 15 4.1 QDU Weight Calibration ...................................................................................... 15 4.2 Pair Weight Calibration ........................................................................................ 16 5. Definition of Extreme Weights......................................................................................... 21 5.1 Questionnaire Dwelling Unit Extreme Weight Definition ................................... 21 5.2 Person Pair Extreme Weight Definition ............................................................... 22 6. Editing and Imputation of Pair Relationships, Multiplicity Factors, and Household-Level Person Counts for Poststratification..................................................... 25 6.1 Introduction........................................................................................................... 25 6.2 Stage One: Creation and Imputation of Pair Relationships .................................. 26 6.2.1 Editing the Household Roster of Each Pair Member................................ 26 6.2.2 Creation of the Pair Relationship Variable PAIRREL ............................. 27 6.2.3 Creation of Covariates for Imputing Pair-Level Variables....................... 34 6.2.4 Creation of the Imputation-Revised Pair Relationship Variable IRPRREL .................................................................................................. 37 6.3 Stage Two: Creation and Imputation of Multiplicities ......................................... 44 6.3.1 Determining the Multiplicity Count for Each Pair Member..................... 45 6.3.2 Determining the Final Multiplicity Count ................................................ 46 6.3.3 Creation of Imputation-Revised Multiplicity Variables ........................... 47 6.4 Stage Three: Creation and Imputation of Household-Level Person Counts in Each Domain for the Purposes of Pair Weight Calibration.............................. 51 6.4.1 Determining the Household-Level Person Count for Each Respondent................................................................................................ 52 6.4.2 Determining the Final Household-Level Person Count............................ 57 6.4.3 Creation of Imputation-Revised Household-Level Person Count Variables ................................................................................................... 58 7. Weight Calibration at Questionnaire Dwelling Unit and Pair Levels............................... 65 7.1 Phase I SDU-Level Weight Components ............................................................. 69 7.2 QDU Weight Components.................................................................................... 70 7.2.1 QDU Weight Component #11: Inverse of Selection Probability of at Least One Person in the Dwelling Unit ................................................ 70 7.2.2 QDU Weight Component #12: Selected QDU Poststratification to SDU-Based Control Totals ....................................................................... 70 v
Page 1 and 2: 2006 NATIONAL SURVEY ON DRUG USE AN
Page 3: Preface This report documents the m
Page 7 and 8: Table of Contents (continued) Appen
Page 9 and 10: List of Tables Table Page Table 1.1
Page 11 and 12: List of Tables (continued) Table Pa
Page 13 and 14: List of Exhibits Exhibit Page Exhib
Page 15 and 16: CBSA DU ev GEM Half step Household-
Page 17 and 18: 1. Introduction Traditionally, most
Page 19 and 20: produced a priori. It was anticipat
Page 21: to perform some treatment (such as
Page 24 and 25: P hij ( ) ⎡P P ⎤⎡ 1 1 ⎤ hi
Page 26 and 27: The QDU selection probability was d
Page 29 and 30: 3. Brief Description of the General
Page 31 and 32: 4. Predictor Variables for the Ques
Page 33 and 34: Exhibit 4.1 Definitions of Levels f
Page 35: Exhibit 4.2 Definitions of Levels f
Page 38 and 39: e. Youth Only; f. Young Adult Only;
Page 41 and 42: 6. Editing and Imputation of Pair R
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Page 45 and 46: Table 6.1 Levels of the Variable PA
Page 47 and 48: Table 6.3 Measures of the Quality o
Page 49 and 50: identified pair member "A" as "othe
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Page 53 and 54: pair member's roster and another pa
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Table 6.6 Age Group Pair Number Age
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13. MSA (metropolitan statistical a
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different ways depending upon the a
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5. parent-child (child 12 to 17), p
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ecause, even though the parent-chil
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collapsed with the two-parent house
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Sibling-sibling pairs. The likeness
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with children) lived within the hou
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6.4.1.2 Sibling-Sibling Domains Whe
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4. The respondent had a child and a
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parent-focus and child-focus counts
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the random imputation described ear
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6.4.3.3.3 Spouse-Spouse Counts For
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7. Weight Calibration at Questionna
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Exhibit 7.2 Summary of 2006 NSDUH P
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Table 7.1 Model Group QDU Sample Si
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7.2.5 QDU Weight Component #15: Res
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8. Evaluation of Calibration Weight
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8.5 Sensitivity Analysis of Drug Us
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Table 8.2a Percentages of Youths (1
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Table 8.4 Percentages of Youths (12
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References Ault, K., Aldworth, J.,
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Singh, A., Grau, E., & Folsom, R.,
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A-2
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A.2 GEM Adjustments for Extreme-Val
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A-6
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B-2
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B.1.1 Person Level B.1.1.1 Receivin
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B-6
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C-2
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To help understand what effects wer
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Exhibit C.1 Definitions of Levels f
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C.3 How to Interpret Collapsing and
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The number of respondents in that c
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Exhibit C.2 Covariates for 2006 NSD
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C-14
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Table C.1b 2006 Distribution of Wei
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Exhibit C.1.1 Covariates for 2006 N
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C-22
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C-30
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C-38
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D-2
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D-4
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E-2
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E-4 Table E.1 2006 NSDUH Selected Q
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E-6 Table E.2 2006 NSDUH Respondent
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F-2
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Table F.1 2006 NSDUH QDU-Level Slip
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G-2
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G-4 Table G.1 2006 NSDUH Selected Q
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G-6 Table G.2 2006 NSDUH Respondent
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H-2
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Exhibit H.1 Definitions of Levels f
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Exhibit H.2 Covariates for 2006 NSD
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H-8
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Table H.1b 2006 Distribution of Wei
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Exhibit H.1.1 Covariates for 2006 N
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H-16
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H-18
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Table H.2b 2006 Pair Weight GEM Mod
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H-26
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I-2
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Table I.1 2006 NSDUH Person Pair-Le
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J-2
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J-4 Table J.1 Domain 2006 NSDUH Sel
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J-6 Table J.2 2006 NSDUH Respondent
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J-8 Table J.3 Domain 2006 NSDUH Res
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J-10
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K-2
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Table K.1 2006 NSDUH Respondent Pai
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L-2
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L-4 Table L.1 2006 NSDUH Selected P
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L-6 Table L.2 2006 NSDUH Respondent
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L-8 Table L.3 2006 NSDUH Respondent
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L-10 Table L.3 2006 NSDUH Responden
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M-2
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procedures were implemented indepen
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first sorting variables). In genera
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predicted mean(s), the neighborhood
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N-2
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The PMM method is only applicable t
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type of constraint, called a "logic
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N-8
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O-2
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Table O.1 Rules for Determining Mat
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Table O.1 Rules for Determining Mat
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O-8 Table O.2 Priority Condition Ru
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O-10 Table O.2 Priority Condition 2
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Table O.2 Priority Condition Rules
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P-2
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P-4 Table P.1 Priority Condition, F
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Table P.1 Priority Conditions Used
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P-8 Table P.1 Priority Condition, F
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P-10 Table P.2 Priority Condition,
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P-18
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Q-2
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data, which was adjusted to more re
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Table Q.1 Model Group 3 (15-17, 15-
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Table Q.1 Model Group 9 (18-20, 26+
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Table Q.2 Pair Domain Sibling (12-1
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Table Q.3 Model Group Parent- Child
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Table Q.3 Pair Domain Spouse- Spous
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Table Q.4 Pair Domain Sibling (12-1
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Q-18
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R-2
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was not imputed, the indirect count
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1. The counts disagreed if a househ
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S-2
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with parent(s) in the household) fo
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• Both had counts of children wit
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− The other conditions had not al
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• The number of children in the s
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5. Two family units might be in the
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− − No bad relationship codes i
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elationship codes, and the sum of t
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• The pair relationship was not a
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• The screener count of roster me
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15. The count of the number of spou
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member had a spouse-spouse-with-chi
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• If the spouse-spouse counts exc
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• The number of roster members yo
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